Record 1 of 169

Title: Method for Mueller matrix acquisition based on a division-of-aperture simultaneous polarimetric imaging technique

Author(s): Ju, HJ (Ju, Haijuan); Ren, LY (Ren, Liyong); Liang, J (Liang, Jian); Qu, ES (Qu, Enshi); Bai, ZF (Bai, Zhaofeng)

Source: JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER  Volume: 225  Pages: 39-44  DOI: 10.1016/j.jqsrt.2018.12.020  Published: MAR 2019  

Abstract: The Mueller matrix is an important parameter in the field of polarization optics, and how to measure it efficiently and accurately becomes considerably significant for its practical applications. In this paper, for the first time to our knowledge, we propose a new method for Mueller matrix acquisition based on a division-of-aperture simultaneous polarimetric imaging technique. Different from the traditional method where, for obtaining the 16 elements of the Mueller matrix, a 16-times-measurement must be conducted by jointly changing the states of polarization (SOPS) of the input and output lights, while in our method it is enough by just changing the SOPs of the input light 4 times. This time-saving and easy-calculating feature is owing to our specific polarimetric camera, where a full-Stokes vector is obtained easily since 3 linear SOPs (0 degrees, 45 degrees, 90 degrees) and 1 circular SOP can be recorded simultaneously by spatially sharing the same detector. To simply verify the effectiveness of our method, a specific polarization device patched by 8 sub-polarizers is chosen as the sample to be measured. Experimental results show that they are consistent with the theoretical results, both in the Mueller matrix and the corresponding images. We predict that this method for Mueller matrix acquisition can get wide potential applications for rapid identifications in biomedicine and material science. (C) 2018 Elsevier Ltd. All rights reserved.

Accession Number: WOS:000460495100005

Conference Title: 1st International Workshop on Advancement of Polarimetric Observations - Calibration and Improved Aerosol Retrievals (APOLO)

Conference Date: OCT 24-27, 2017

Conference Location: Hefei, PEOPLES R CHINA

Author Identifiers:

ISSN: 0022-4073

eISSN: 1879-1352

Record 2 of 169

Title: Bidirectional adaptive feature fusion for remote sensing scene classification

Author(s): Lu, XQ (Lu, Xiaoqiang); Ji, WJ (Ji, Weijun); Li, XL (Li, Xuelong); Zheng, XT (Zheng, Xiangtao)

Source: NEUROCOMPUTING  Volume: 328  Special Issue: SI  Pages: 135-146  DOI: 10.1016/j.neucom.2018.03.076  Published: FEB 7 2019  

Abstract: Scene classification has become an effective way to interpret the High Spatial Resolution (HSR) remote sensing images. Recently, Convolutional Neural Networks (CNN) have been found to be excellent for scene classification. However, only using the deep models as feature extractor on the aerial image directly is not proper, because the extracted deep features can not capture spatial scale variability and rotation variability in HSR remote sensing images. To relieve this limitation, a bidirectional adaptive feature fusion strategy is investigated to deal with the remote sensing scene classification. The deep learning feature and the SIFT feature are fused together to get a discriminative image presentation. The fused feature can not only describe the scenes effectively by employing deep learning feature but also overcome the scale and rotation variability with the usage of the SIFT feature. By fusing both SIFT feature and global CNN feature, our method achieves state-of-the-art scene classification performances on the UCMerced, the Sydney and the AID datasets. (C) 2018 Elsevier B.V. All rights reserved.

Accession Number: WOS:000458065600015

Conference Title: 2nd CCF Chinese Conference on Computer Vision (CCCV)

Conference Date: OCT 11-14, 2017

Conference Location: China Comp Federat, Tianjin, PEOPLES R CHINA

Conference Sponsors: China Comp Federat, Profess Comm Comp Vis, Civil Aviat Univ, Tianjin Univ, Nankai Univ, CCF Tech Comm Comp Vis, Megvii Face++, Sensetime, Isecure Technol, Ali A I Labs, Hiscene, Riseye, Tupu, Nvidia, Pingan Technol, Pinnacle, Vrview, Xilinx, Athena Eyes, Watrix Technol, Extreme Vis, Shanghai Acad Artificial Intelligence, Segway Robot, Percipio XYZ, AN

Conference Host: China Comp Federat

Author Identifiers:

ISSN: 0925-2312

eISSN: 1872-8286

Record 3 of 169

Title: Optimum Design of Electron Bombarded Active Pixel Sensor for Low-Level Light Single Photon Imaging

Author(s): Bai, JZ (Bai, Jinzhou); Wang, B (Wang, Bo); Bai, YL (Bai, Yonglin); Cao, WW (Cao, Weiwei); Yang, Y (Yang, Yang); Lei, FP (Lei, Fanpu); Su, D (Su, Dan)

Edited by: Jiang Y; Ma X; Li X; Pu M; Feng X; Kippelen B

Source: 9TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTOELECTRONIC MATERIALS AND DEVICES FOR SENSING AND IMAGING  Book Series: Proceedings of SPIE  Volume: 10843  Article Number: 108430V  DOI: 10.1117/12.2506350  Published: 2019  

Abstract: Low-Level Light Imaging(LLLI) devices are now been widely used in military, astronomy, scientific, and even in surveillance for our daily uses. The traditional devices like ICCD, EBCCD, EMCCD, which either complicated in structure or require extra cooling system. However, a novel device called Electron Bombarded Active Pixel Sensor(EBAPS) has been developed, it is a proximity focused device which lead photoelectrons produced by photocathode hitting directly towards back illuminated CMOS and cause the semiconductor bombard phenomenon to amplification and then being readout. EBAPS is relatively small in size, less weight, with high sensitivity, and can be used to detect single photon event, etc. Although it has been proven to have excellent sensitivity in the field of LLLI, the performance today is still considered far from its maximum potential. Here, we modeled the structure of EBAPS and studied the factors influencing the performance of the device. By selecting proper parameters like proximity distance, acceleration voltage, photocathode quantum efficiency, etc., we achieved the single photon image mode with a satisfactory sensitivity. Besides, we simulated the electron scattering trajectories among the semiconducting multiplication area by using Monte Carlo method, we compared the simulation results in different conditions and successfully in finding the optimum parameter, which achieved a relatively high sensitivity. The simulation results in this paper could have a profound theoretical foundation in developing higher gain EBAPS.

Accession Number: WOS:000465823200030

Conference Title: 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) - Optoelectronic Materials and Devices for Sensing and Imaging

Conference Date: JUN 26-29, 2018

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Inst Opt & Elect, Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2329-3

Record 4 of 169

Title: Self-healing dynamically controllable micro-comb

Author(s): Bao, HL (Bao, Hualong); Gongora, JST (Gongora, Juan Sebastian Totero); Rowley, M (Rowley, Maxwell); Chu, ST (Chu, Sai T.); Little, BE (Little, Brent E.); Morandotti, R (Morandotti, Roberto); Moss, DJ (Moss, David J.); Peccianti, M (Peccianti, Marco); Pasquazi, A (Pasquazi, Alessia)

Book Group Author(s): IEEE

Source: 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)  DOI: 10.1109/cleoe-eqec.2019.8872905  Published: 2019  

Accession Number: WOS:000630002701222

Conference Title: Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC)

Conference Date: JUN 23-27, 2019

Conference Location: Munich, GERMANY

Conference Sponsors: European Phys Soc, Quantum Elect & Opt Div, IEEE Photon Soc, Opt Soc, World Photon Congress, EPS Young Minds

Author Identifiers:

ISBN: 978-1-7281-0469-0

Record 5 of 169

Title: Observation of Laser-Cavity Solitons in Micro-Resonators

Author(s): Bao, HL (Bao, Hualong); Cooper, A (Cooper, Andrew); Rowley, M (Rowley, Maxwell); Di Laura, L (Di Laura, Luigi); Gongora, JST (Gongora, Juan Sebastian Totero); Chu, ST (Chu, Sai T.); Little, BE (Little, Brent E.); Oppa, GL (Oppa, Gian-Luca); Morandotti, R (Morandotti, Roberto); Moss, DJ (Moss, David J.); Wetzel, B (Wetzel, Benjamin); Peccianti, M (Peccianti, Marco); Pasquazi, A (Pasquazi, Alessia)

Book Group Author(s): IEEE

Source: 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS EUROPE & EUROPEAN QUANTUM ELECTRONICS CONFERENCE (CLEO/EUROPE-EQEC)  DOI: 10.1109/cleoe-eqec.2019.8872338  Published: 2019  

Accession Number: WOS:000630002700641

Conference Title: Conference on Lasers and Electro-Optics Europe / European Quantum Electronics Conference (CLEO/Europe-EQEC)

Conference Date: JUN 23-27, 2019

Conference Location: Munich, GERMANY

Conference Sponsors: European Phys Soc, Quantum Elect & Opt Div, IEEE Photon Soc, Opt Soc, World Photon Congress, EPS Young Minds

Author Identifiers:

ISBN: 978-1-7281-0469-0

Record 6 of 169

Title: Mirror module design of x-ray telescopes of eXTP mission

Author(s): Basso, S (Basso, S.); Civitani, M (Civitani, M.); Pareschi, G (Pareschi, G.); Sironi, G (Sironi, G.); Spiga, D (Spiga, D.); Tagliaferri, G (Tagliaferri, G.); Wang, J (Wang, J.); Yang, Y (Yang, Y.); Xu, Y (Xu, Y.); Chen, Y (Chen, Y.); Sheng, L (Sheng, L.); Yan, Y (Yan, Y.); Qiang, P (Qiang, P.); Zhao, B (Zhao, B.)

Edited by: ODell SL; Pareschi G

Source: OPTICS FOR EUV, X-RAY, AND GAMMA-RAY ASTRONOMY IX  Book Series: Proceedings of SPIE  Volume: 11119  Article Number: 1111904  DOI: 10.1117/12.2530807  Published: 2019  

Abstract: The eXTP (enhanced X-Ray Timing and Polarimetry) mission is a Chinese science space mission developed in collaboration with many international countries. Devoted to observations in the X-ray band, with imaging, spectroscopic, timing and polarimetry capabilities, is now entering phase B. The payload includes 9 Spectroscopic Focusing Array (SFA) and 4 Polarimetry Focusing Array (PFA) telescopes. The SFA telescopes, equipped with SDDs, have a spatial resolution of 1 arcmin, while the PFA telescopes, equipped with imaging gas pixel photoelectric polarimeters, have a spatial resolution of 30 arcsec. Both optics work in the 0.5-10 keV range with a focal length of 5.25 m and a field of view of 12 arcmin. The technology used for the optics production is Nickel electroforming from super-polished mandrels, like many previous successful X-ray missions. The reflecting coating is a double layer Au+C, which ensures optimal response at high and low energies. The PFA and SFA have the same optical design, in order to minimize the number of mandrels to be produced. In this paper, we present the optical design of these telescopes assisted with raytracing and a preliminary concept for the mechanical design supported by FEM simulation.

Accession Number: WOS:000535242800002

Conference Title: Conference on Optics for EUV, X-Ray, and Gamma-Ray Astronomy IX as part of the SPIE Optics + Photonics International Symposium on Optical Engineering + Applications

Conference Date: AUG 13-15, 2019

Conference Location: San Diego, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2932-5

Record 7 of 169

Title: Hyperspectral Image Classification with Imbalanced Data Based on Oversampling and Convolutional Neural Network

Author(s): Cai, L (Cai, Lei); Zhang, G (Zhang, Geng)

Edited by: Greivenkamp J; Tanida J; Jiang Y; Gong H; Lu J; Liu D

Source: AI IN OPTICS AND PHOTONICS (AOPC 2019)  Book Series: Proceedings of SPIE  Volume: 11342  Article Number: UNSP 113420B  DOI: 10.1117/12.2543458  Published: 2019  

Abstract: Data imbalance is a common problem in hyperspectral image classification. The imbalanced hyperspectral data will seriously affect the final classification performance. To address this problem, this paper proposes a novel solution based on oversampling method and convolutional neural network. The solution is implemented in two steps. Firstly, SMOTE(Synthetic Minority Oversampling Technique) is used to enhance the data of minority classes. In the minority classes, SMOTE method is used to generate new artificial samples, and then the new artificial samples are added to the minority classes, so that all classes in the training dataset can reach to the balanced distribution. Secondly, According to the data characteristics of hyperspectral image, a convolutional neural network is constructed for classifying the hyperspectral image. The balanced training data set is used to train the convolutional neural network. We experimented with the proposed solution on the Indian Pines, Pavia University dataset. The experimental results show that the proposed solution can effectively solve the problem of imbalanced hyperspectral data and improve the classification performance.

Accession Number: WOS:000525823200010

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) - AI in Optics and Photonics (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3457-2

Record 8 of 169

Title: Study on Spectral Transfer Characteristics of Double AOTF imaging spectrometer acoustic optic crystals

Author(s): Chang, LY (Chang Lingying); Jin, MZ (Jin Mengzhu); Song, JJ (Song Jingjing); Yao, DW (Yao Dawei); Qiu, YH (Qiu Yuehong)

Edited by: Yu J; Wang Z; Palleschi V; Xie M; Fu Y

Source: AOPC 2019: OPTICAL SPECTROSCOPY AND IMAGING  Book Series: Proceedings of SPIE  Volume: 11337  Article Number: UNSP 113370S  DOI: 10.1117/12.2544943  Published: 2019  

Abstract: Optical instruments usually use optical transfer functions to represent the target image quality. It can represent the spatial characteristics of the imaging spectrometer and the transmission characteristics of signal output and input in the frequency. However, for the imaging spectrum instrument, it can obtain both the spectral and spatial information at the same time, so it is also necessary to use the spectral transfer function to represent the spectral characteristics of the imaging spectrometer. In this paper, first, the working principle of double AOTF imaging spectrometer was introduced. Second, the spectral transfer function of double AOTF imaging spectrometer acoustics optic crystals was established. It is obtained by integrating the spectral transmission function within the wave difference range when the wave number difference is greater than zero. Last, the spectral transfer function in the 400nm-900nm of double AOTF imaging spectrometer acoustic optic crystals with the central wave difference and same were calculated. The results show that the wavelength difference was higher than that of the small spectral transfer function.The research results of this paper provided reference for the design and research for new imaging spectrometer.

Accession Number: WOS:000526705900027

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) on Optical Spectroscopy and Imaging (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, SPIE, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3447-3

Record 9 of 169

Title: High-speed light focusing through multimode fiber for spot-scanning imaging

Author(s): Chen, H (Chen, Hui); Geng, Y (Geng, Yi); Xu, CF (Xu, Chengfang); Zhuang, B (Zhuang, Bin); Ren, LY (Ren, Liyong)

Edited by: Wang H

Source: ELEVENTH INTERNATIONAL CONFERENCE ON INFORMATION OPTICS AND PHOTONICS (CIOP 2019)  Book Series: Proceedings of SPIE  Volume: 11209  Article Number: UNSP 112092F  DOI: 10.1117/12.2548288  Published: 2019  

Abstract: The image distortions caused by the inherent mode dispersion and coupling of the multimode fiber (MMF) lead its output light field to be scattered and prevent it from applicating in endoscopy. Although various wavefront shaping methods have been proposed to overcome these image distortions and form the focused spots through the MMF, they are usually time-consuming due to the multiple iterations and tedious calculation. In this paper, based on the phase-only modulation of the spatial light modulator (SLM) and the parallel algorithm, we experimentally demonstrate the highspeed focusing through the MMF without the iteration process. Our parallel algorithm, including the online speckle recording process and the offline compensated phase calculation process, allows it possible to calculate the compensated phase masks for generating several focused spots at different predefined positions at one time, which is quite timesaving. Experiment shows that a series of focused spots at arbitrary target positions at the MMF output facet are efficiently generated by just one-loop accessing the SLM and the speckle capturing-device and one-time phase retrieval. Besides, focusing at different depths along the output light axis of the MMF is demonstrated by modifying the compensated phase masks. We predict the high-speed focusing method through the MMF might have the potential application for fast spot-scanning imaging.

Accession Number: WOS:000526177700086

Conference Title: 11th International Conference on Information Optics and Photonics (CIOP)

Conference Date: AUG 06-09, 2019

Conference Location: Xi'an, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Laser Press, NW Polytechn Univ

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3174-8

Record 10 of 169

Title: Image information from a dual channel optical synthetic aperture imaging system

Author(s): Chen, LW (Chen Liwu); Zhao, BC (Zhao Baochang); Chen, R (Chen Ren); Gao, C (Gao Cong)

Edited by: Yu Q; Huang W; He Y

Source: FIFTH SYMPOSIUM ON NOVEL OPTOELECTRONIC DETECTION TECHNOLOGY AND APPLICATION  Book Series: Proceedings of SPIE  Volume: 11023  Article Number: UNSP 1102329  DOI: 10.1117/12.2522481  Published: 2019  

Abstract: Introduce an optic system which by two fields of the system to observe the same object, it acquire two channels image of the object on the first imaging plate; and one by one the two channels image collimated by the array lens after them, then all the collimated beams were collected into the second image plate. As the two channels image were focus into the second image plate, super-resolution image of the object were acquired. The photos of the experiment proved this.

Accession Number: WOS:000464731500076

Conference Title: 5th Symposium on Novel Optoelectronic Detection Technology and Application

Conference Date: OCT 24-26, 2018

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Engn, Div Informat & Elect Engn, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Xian Technol Univ, Sci & Technol Low Light Level Night Vis Lab

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2713-0

Record 11 of 169

Title: NON-LOCAL RESTORATION OF SPARSE 3D SINGLE-PHOTON DATA

Author(s): Chen, SM (Chen, Songmao); Halimi, A (Halimi, Abderrahim); Ren, XM (Ren, Ximing); McCarthy, A (McCarthy, Aongus); Su, XQ (Su, Xiuqin); Buller, GS (Buller, Gerald S.); McLaughlin, S (McLaughlin, Steve)

Book Group Author(s): IEEE

Source: 2019 27TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO)  Book Series: European Signal Processing Conference  DOI: 10.23919/eusipco.2019.8902525  Published: 2019  

Abstract: This paper presents a new algorithm for the non-local restoration of single-photon 3-Dimensional Lidar images acquired in the photon starved regime or with a reduced number of scanned spatial points (pixels). The algorithm alternates between two steps: evaluation of the spatial correlations between pixels using a graph, then restore the depth and reflectivity images by their spatial correlations. To reduce the computational cost associated with the graph, we adopt a non-uniform sampling approach, where bigger patches are assigned to homogeneous regions and smaller ones to heterogeneous regions. The restoration of 3D images is achieved by minimizing a cost function accounting for the data Poisson statistics and the non-local spatial correlations between patches. This minimization problem is efficiently solved using the alternating direction method of multipliers (ADMM) that presents fast convergence properties. Results on real Lidar data show the benefits of the proposed algorithm in improving the quality of the estimated depth images, especially in photon starved cases, which can contain a reduced number of photons.

Accession Number: WOS:000604567700032

Conference Title: 27th European Signal Processing Conference (EUSIPCO)

Conference Date: SEP 02-06, 2019

Conference Location: A Coruna, SPAIN

Conference Sponsors: European Assoc Signal Proc, Univ Coruna, IEEE Signal Proc Soc, Xunta Galicia, Conselleria Cultura Educac, Oredenac Univ, Turismo A Coruna, Oficina Informac Tuursimo A Coruna, Off Navl Res Global, Xunta Galicia, Centro Investigac TIC, MathWorks, Natl Sci Fdn, Fundac Circulo Tecnologias Defensa Seguridad, Catedra UDC Everis Transformac Digital, Colexico Oficial Enxeneiros Telecomunicac Galicia, Inst Tecnologico Galicia

Author Identifiers:

ISSN: 2076-1465

ISBN: 978-9-0827-9703-9

Record 12 of 169

Title: Research on the Fast Image Motion Compensation Technology of Aerial Digital Camera

Author(s): Chen, WN (Chen WeiNing); Lei, YJ (Lei YangJie); Yang, HT (Yang Hong Tao)

Book Group Author(s): Assoc Comp Machinery

Source: ICCCV 2019: PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON CONTROL AND COMPUTER VISION  Pages: 71-74  DOI: 10.1145/3341016.3341641  Published: 2019  

Abstract: When the aerial camera is photographed, during the forward flight, there is a relative motion between the image formed by the photographic object on the focal plane and the photosensitive medium, which brings about image blur and seriously affects the imaging quality of the camera. This paper analyzes the cause of heading image shift and its influence on image, and expounds the necessity of image shift compensation. On the basis of the analysis and study of various existing methods of image shift compensation, a heading image shift compensation mechanism was designed, and the image shift compensation was carried out using a moving target structure. The imaging effect was good through flight tests. Can satisfy the multitype aerial imaging image migration compensation requirements.

Accession Number: WOS:000506804400021

Conference Title: 2nd International Conference on Control and Computer Vision (ICCCV)

Conference Date: JUN 15-18, 2019

Conference Location: SOUTH KOREA

ISBN: 978-1-4503-6322-8

Record 13 of 169

Title: Design and implementation of real-time intersection simulation for optoelectronic equipment

Author(s): Chen, Y (Chen, Yan); Zhang, ZX (Zhang, Zhixiang); Zhou, X (Zhou, Xin); Jin, HM (Jin, Humin); Zhang, MM (Zhang, Mingmei)

Edited by: Xu B

Source: PROCEEDINGS OF 2019 IEEE 8TH JOINT INTERNATIONAL INFORMATION TECHNOLOGY AND ARTIFICIAL INTELLIGENCE CONFERENCE (ITAIC 2019)  Pages: 1465-1469  Published: 2019  

Abstract: As an important application of TT&C equipment, it's difficult to design and realize the real-time intersection of angular data from photoelectric theodolites for acquiring target's position. It's necessary to build a simulation environment while developing intersection software for future practicability, and the simulation procedure should be based on the real treatment scheme of TT&C data. A photoelectric theodolite real-time intersection simulation system is developed in this paper, with details about designing and building. This system can simulate ballistic trajectory data, photoelectric theodolite measuring data and run real-time intersection functions for calculating target positions, which depicts the whole procedure of photoelectric theodolite intersection in. Especially, a new treatment scheme of intersection data was provided, so the real-time intersection software could adaptively match angular data with intersection number for using the data at best. The system was proved to be efficient and approximated to the real condition, and the intersection software satisfied the need of real-time intersection.

Accession Number: WOS:000502359500290

Conference Title: IEEE 8th Joint International Information Technology and Artificial Intelligence Conference (ITAIC)

Conference Date: MAY 24-26, 2019

Conference Location: Chongqing, PEOPLES R CHINA

Conference Sponsors: IEEE, IEEE Beijing Sect, Chongqing Global Union Acad Sci & Technol, Chongqing Univ Technol, Chengdu Global Union Acad Sci & Technol, Chongqing Geeks Educ Technol Co Ltd

Author Identifiers:

ISBN: 978-1-5386-8178-7

Record 14 of 169

Title: Prediction of penetration depth of earth penetrator based on neural network

Author(s): Chen, Z (Chen Zhuo); Sun, HX (Sun Huixiang); Wang, YW (Wang Yingwu); Niu, H (Niu Huan)

Book Group Author(s): IOP

Source: 2019 3RD INTERNATIONAL WORKSHOP ON RENEWABLE ENERGY AND DEVELOPMENT (IWRED 2019)  Book Series: IOP Conference Series-Earth and Environmental Science  Volume: 267  Article Number: 032004  DOI: 10.1088/1755-1315/267/3/032004  Published: 2019  

Abstract: An artificial intelligence neural network model is established in this essay to seek a more general method for predicting penetration depth of earth penetrator, to comprehensively analyze the effect of various parameters on penetration depth as well as to predict the penetration depth of earth penetrator.This paper, by means of numerical simulation, and determined the ordnance penetrator warhead curvature radius, the length of the projectile, the density of the projectile,the density of the target protective layer, the elastic modulus of the target protective layer and the hit velocity of the earth penetrator.This six key parameters as the input data of neural network model, and by using numerical simulation to obtain the data needed for training the neural network model samples. According to the characteristics of six input data and one output data of the neural network model, the possible structure of the neural network model is set, and the optimal model structure is selected through training. We built neural network model to forecast the ordnance penetrator penetration depth, analyzes the six key parameter's influence on the depth of penetration, the results show that reducing the warhead curvature radius, increasing the length and density of the projectile, properly increasing the impact velocity of the projectile can improve the penetration ability of the earth penetrating projectile, and increasing the density and elastic modulus of the target protective layer can improve the anti-penetration ability of the protective layer.

Accession Number: WOS:000495369900049

Conference Title: 3rd International Workshop on Renewable Energy and Development (IWRED)

Conference Date: MAR 08-10, 2019

Conference Location: Guangzhou, PEOPLES R CHINA

Conference Sponsors: Taiyuan Univ Technol

Author Identifiers:

ISSN: 1755-1307

Record 15 of 169

Title: Research on precision space linear rolling guide dynamics

Author(s): Cheng, PH (Cheng, Penghui); Wu, MY (Wu, Mengyuan); Li, C (Li, Chuang); Ma, XZ (Ma, Xiaozhe)

Edited by: Shao J; Jitsuno T; Rudolph W

Source: PACIFIC-RIM LASER DAMAGE 2019: OPTICAL MATERIALS FOR HIGH-POWER LASERS  Book Series: Proceedings of SPIE  Volume: 11063  Article Number: UNSP 110630G  DOI: 10.1117/12.2539145  Published: 2019  

Abstract: Linear rolling guide have widely used in precision machinery today, with significant advantages such as high precision, low traction and low wear. Research on the dynamic characteristics of precision linear rolling guide became very important for space applications due to the continuous improvement of the manufacturing level of high-precision equipment. The THK's RSR small precision guide is studied in this research. The model of guide joint is established by optimized tandem damping element with the finite element method to simulate the dynamic stiffness and ball mass of the guide joint. The analytical formula based on Hertzian contact theory is adopted in this research to obtain the dynamic parameters of the guide joint. Accomplishing the the dynamic simulation analysis of the precision guide based on the finite element method by MSC.Patran & Nastran software.

Accession Number: WOS:000511186900015

Conference Title: Conference on Pacific-Rim Laser Damage - Optical Materials for High-Power Lasers

Conference Date: MAY 19-22, 2019

Conference Location: Qingdao, PEOPLES R CHINA

Conference Sponsors: SPIE, Shanghai Inst Opt & Fine Mech, Chinese Laser Press, Qingdao Univ, Shandong Soc Opt Engn

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2817-5

Record 16 of 169

Title: Relationship between angle error and image rotation of Sagnac transverse shearing interferometer

Author(s): Chou, XQ (Chou Xiao-quan); Jiao, QL (Jiao Qiao-li); Sun, J (Sun Jian); Ren, WZ (Ren Wen-zhen); Li, XY (Li Xiao-yan)

Edited by: Tian Y; Xiao T; Liu P

Source: SECOND SYMPOSIUM ON NOVEL TECHNOLOGY OF X-RAY IMAGING  Book Series: Proceedings of SPIE  Volume: 11068  Article Number: 110680Q  DOI: 10.1117/12.2523884  Published: 2019  

Abstract: In order to solve the image rotation in Sagnac transverse shearing interferometer, a model system is built on ray vector tracing and rotation matrix theory, as well as the theoretical imaging orientation and the actual imaging orientation with the angle error are demonstrated. Besides, the relation between the angle error and the rotation of the image body is concluded, which provides a theoretical guidance for optical alignment in Sagnac transverse shearing interferometer. Finally, an optimized optical alignment scheme is provided by the discussion of the angle error in the assembly and system-level loading process, which is also validated by optical alignment instance.

Accession Number: WOS:000473327700025

Conference Title: 2nd Symposium on Novel Technology of X-Ray Imaging

Conference Date: NOV 26-28, 2018

Conference Location: Hefei, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Sci & Technol China, Natl Synchrotron Radiat Lab, N Night Vis Technol Co Ltd, Chinese Acad Sci, Shanghai Ins Appl Phys, Chinese Acad Sci, Inst High Energy Phys, China Ins Atom Energy

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2827-4

Record 17 of 169

Title: Micro-vibration test of a reaction wheel after the mechanical test and transferring property through a shafting

Author(s): Cui, K (Cui, Kai); She, WJ (She, Wenji); Gao, X (Gao, Xiong); Li, ZG (Li, Zhiguo); Zheng, ZQ (Zheng, Zhiqi); Wang, H (Wang, Huan)

Edited by: Tian Y; Xiao T; Liu P

Source: SECOND SYMPOSIUM ON NOVEL TECHNOLOGY OF X-RAY IMAGING  Book Series: Proceedings of SPIE  Volume: 11068  Article Number: 110680G  DOI: 10.1117/12.2523186  Published: 2019  

Abstract: The spacecraft micro-vibration restricts the smoothness of satellite-born pointing assembles, especially for space-based laser communication, it may cause more capacity loss. A precision shafting is often the key component, connecting the satellite and the optical antenna, and transferring micro-vibration from the satellite bus to the above payload. The oscillation characteristics of the Reaction Wheel(RW) subjected to mechanical tests was implemented via pairs of liner accelerometers and acquisition system, then the micro-vibration transfer property through shafting were studied. The results showed that the RW vibration standard deviation (STD) magnified about 5 times to 30mg similar to 50mg in time domain after the mechanical test, the FFT analysis in frequency domain showed the vibration response frequency was spurious, but the main frequency of about 430Hz and 860Hz which matched the frequency multiplication of the frequency the RW bearing balls passing the point defects in the bearing inner part. The liner acceleration and angular velocity was almost direct ratio to the RW speed, and the RW tangential vibration seemed to be more sensitive to the speed. The space used precision shafting showed perfect attenuation for a high frequency angular vibration transferring, the attenuation ratio was about 70%.

Accession Number: WOS:000473327700015

Conference Title: 2nd Symposium on Novel Technology of X-Ray Imaging

Conference Date: NOV 26-28, 2018

Conference Location: Hefei, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Sci & Technol China, Natl Synchrotron Radiat Lab, N Night Vis Technol Co Ltd, Chinese Acad Sci, Shanghai Ins Appl Phys, Chinese Acad Sci, Inst High Energy Phys, China Ins Atom Energy

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2827-4

Record 18 of 169

Title: Angular micro-vibration test of an agile satellite high resolution camera based on liner accelerometer

Author(s): Cui, K (Cui, Kai); Zheng, ZQ (Zheng, Zhiqi); Gao, X (Gao, Xiong); Yang, YQ (Yang, Yongqing); Li, ZG (Li, Zhiguo); Li, SX (Li, Shuxiu)

Edited by: Tian A

Source: THIRD INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING  Book Series: Proceedings of SPIE  Volume: 11052  Article Number: UNSP 110520H  DOI: 10.1117/12.2521437  Published: 2019  

Abstract: The angular micro-vibration of a high resolution camera mounting on an agile satellite was achieved based on pairs of liner accelerometers alignment and numerical integration method. Three pairs of sensors were mounted at different portion of the satellite for studying the structure transfer character, including the Reaction Wheel (RW)interface, the camera interface and the camera tail. The results showed that the RW original micro-vibration standard deviation (STD) output acquired at the RW interference was 1.63 mu rad at RW 400rpm and increased to 2.43 mu rad when the RW speed up to 800rpm. When transferring from RW to the camera interface, the angular vibration response STD was attenuated to 0.31 mu rad@400rpm and 0.27 mu rad@800rpm, and finally to the camera tail the angular vibration response STD became 0.31 mu rad@400rpm and 0.30 mu rad@800rpm. We can see that the satellite-camera structure has a good attenuation effect on the micro-vibration, the output angular micro-vibration STD is about 0.31 mu rad with an input of 1.63 mu rad similar to 2.43 mu rad. the stiffness of the camera is pretty good, ensuring that the micro-vibration STD difference between the camera flange and the camera tail is smaller 0.03 mu rad. In addition, we found that the FOGs useful bandwidth wasn't insufficient when acquiring about 340Hz main frequency vibration signal in our case, even though a higher stiffness flange was recommended which connecting the FOG and camera.

Accession Number: WOS:000464740100016

Conference Title: 3rd International Conference on Photonics and Optical Engineering

Conference Date: DEC 05-08, 2018

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Inst Opt & Precis Mech, Xian Technol Univ, State Key Lab Transient Opt & Photon, Chinese Opt Soc, High Speed Photog & Photon Comm, Shaanxi Opt Soc, Opt & Photon Soc Singapore

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2780-2

Record 19 of 169

Title: High sensitivity curvature sensor based on seven core fiber

Author(s): Dong, SD (Dong, Shandong); Tan, FZ (Tan, Fengze); Dong, B (Dong, Bo); Yu, CY (Yu, Changyuan); Guo, YX (Guo, Yongxin)

Book Group Author(s): IEEE

Source: 2019 24TH OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC) AND 2019 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING AND COMPUTING (PSC)  Published: 2019  

Abstract: This paper presents a structure of single-mode fiber (SMF)-seven-core-fiber (SCF)-SMF, with a core-offset in one splicing point. Its maximum curvature sensitivity reaches 33.4363 nm/m(-1), within the measurement range of 0.86 m(-1)-1.21 m(-1).

Accession Number: WOS:000681555500080

Conference Title: 24th OptoElectronics and Communications Conference (OECC) / International Conference on Photonics in Switching and Computing (PSC)

Conference Date: JUL 07-11, 2019

Conference Location: Fukuoka, JAPAN

Conference Sponsors: IEICE Commun Soc, IEICE Elect Soc, IEEE Photon Soc, Opt Soc, Photon Internet Forum, Optoelectron Ind & Technol Dev Assoc, Commun & Informat Network Assoc Japan, Inst Elect Engineers Japan, Laser Soc Japan, Inst Image Informat & Televis Engineers, Soc Instrument & Control Engineers, Japan Soc Appl Phys, Informat Proc Soc Japan, Opt Soc Japan, Kyushu Univ, Grad Sch & Fac Informat Sci & Elect Engn, IEEE Commun Soc Tokyo FK HR NG SP SK SE Joint Chapter

Author Identifiers:

ISBN: 978-4-88552-321-2

Record 20 of 169

Title: A spatial moving target recognition algorithm based on full information vector

Author(s): Du, Y (Du, Yun); Wen, DS (Wen, Desheng); Liu, GZ (Liu, Guizhong); Yi, HW (Yi, Hongwei); Liu, MY (Liu, Meiying); Fang, JL (Fang, Junli)

Edited by: Tian A

Source: THIRD INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING  Book Series: Proceedings of SPIE  Volume: 11052  Article Number: UNSP 1105210  DOI: 10.1117/12.2521938  Published: 2019  

Abstract: In this paper, a full information vector recognition algorithm for moving targets is proposed on the basis of the characteristic distribution of point targets and the moving characteristic between frames. The traditional multi-frame image fusion method of moving target recognition is abandoned. We utilize the distribution characteristic of point targets extracted from single image and moving characteristic of point targets extracted from multiple images to recognize and classify moving targets with the similarity principle of feature vector. Compared with the traditional maximum likelihood estimation image processing algorithm, the proposed recognition method costs less computation and provides a novel approach for spatial moving target detection and recognition.

Accession Number: WOS:000464740100035

Conference Title: 3rd International Conference on Photonics and Optical Engineering

Conference Date: DEC 05-08, 2018

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Inst Opt & Precis Mech, Xian Technol Univ, State Key Lab Transient Opt & Photon, Chinese Opt Soc, High Speed Photog & Photon Comm, Shaanxi Opt Soc, Opt & Photon Soc Singapore

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2780-2

Record 21 of 169

Title: A High-Speed Multi-Scale Kernel Correlation Filter Tracking Algorithm

Author(s): Fu, B (Fu, Bin); Song, ZX (Song, Zongxi); Wang, F (Wang, Feng); Gao, W (Gao, Wei); Zhang, S (Zhang, Shuang); Liu, JW (Liu, Jiwei)

Edited by: Hwang JN; Jiang X

Source: ELEVENTH INTERNATIONAL CONFERENCE ON DIGITAL IMAGE PROCESSING (ICDIP 2019)  Book Series: Proceedings of SPIE  Volume: 11179  Article Number: UNSP 111793Z  DOI: 10.1117/12.2539759  Published: 2019  

Abstract: Recently, Kernel Correlation Filter (KCF) is recognized as one of the best visual tracking algorithms which provide excellent tracking performance and high possessing speed. However, how to adapt to the scale change of target in real time and accurately is still an open problem. In this paper, a multi-scale improved method based on one-dimensional scale correlation filtering is proposed. We use the kernel function to solve the regularized least squares classifier, and the translation filter template is obtained to estimate the target position. Then, we collect a series of samples of different scales at the target position to construct a one-dimensional scale filter template for estimating the most suitable scale. The filter is learned and updated online in the tracking process. In scale estimation, we employed the dimension reduction method to reduce the computational complexity, and the interpolation method is used to increase the number of multi-scale to obtain more accurate scale location. A number of experimental results and data show that the target region overlap rate and tracking rate of the improved algorithm are improved by 9% and 60% on average compared with the best of other scale adaptive tracking algorithms. Compared with the KCF algorithm, the average position tracking error is reduced by 23.9% and the overlap rate is increased by 46%.

Accession Number: WOS:000511106700142

Conference Title: 11th International Conference on Digital Image Processing (ICDIP)

Conference Date: MAY 10-13, 2019

Conference Location: Sun Yat Sen Univ, Guangzhou, PEOPLES R CHINA

Conference Sponsors: E China Normal Univ, Int Assoc Comp Sci & Informat Technol

Conference Host: Sun Yat Sen Univ

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3076-5

Record 22 of 169

Title: Analysis and Experiment of Synchronized Calibration of Doppler Asymmetric Spatial Heterodyne Spectroscopy (DASH)

Author(s): Fu, D (Fu, Di); Zhang, ZN (Zhang, Zhinan); Zhang, ZH (Zhang, Zhaohui); Yan, P (Yan, Peng); Li, J (Li, Juan); Zhang, YF (Zhang, Yafei); Feng, YT (Feng, Yutao)

Edited by: Tian A

Source: THIRD INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING  Book Series: Proceedings of SPIE  Volume: 11052  Article Number: UNSP 1105216  DOI: 10.1117/12.2522002  Published: 2019  

Abstract: Doppler asymmetric spatial heterodyne spectroscopy (DASH) with its high stability and feasibility of synchronized calibration highly suit for the wind field observation. By applying the synchronized calibration, the thermal phase distortion of observation emission line could be corrected greatly based on the similarity of thermal effects between observation emission line and calibration line. While, the correction residual which could be called relative thermal phase distortion still influence the wind measurement precision significantly. In this manuscript, we discuss and analyze the relative phase distortion of DASH theoretically and practically based on the DASH retrieval theory and the experiment. Firstly, based on the retrieve theory of DASH, we analyze the relationship between the relative phase distortion and the precision of the wind measurement. It is found that 1.528mrad phase error equal to l m/s wind measurement error for the DASH developed by our research group. Secondly, based on the DASH developed by our research group, laser of 632.8nm and Ne lamp are employed as input source to test relationship between relative phase distortion and internal temperature of interferometer. According to the experiment result, the relative phase distortion change weekly with the variation of temperature between 25.14 degrees C and 25.67 degrees C. While, the relative phase stability decrease rapidly in other else temperature range. Lastly, according to the experiment result, we analyze the major source of relative phase distortion which could make contribution to reducing the relative phase error, which could increase the wind measurement precision, in the future research.

Accession Number: WOS:000464740100041

Conference Title: 3rd International Conference on Photonics and Optical Engineering

Conference Date: DEC 05-08, 2018

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Inst Opt & Precis Mech, Xian Technol Univ, State Key Lab Transient Opt & Photon, Chinese Opt Soc, High Speed Photog & Photon Comm, Shaanxi Opt Soc, Opt & Photon Soc Singapore

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2780-2

Record 23 of 169

Title: Mechanism Design of A Low Temperature Resistant and High Precision Zoom Lens

Author(s): Gao, B (Gao Bo); Qiang, ZH (Qiang Zihao); Yang, HT (Yang Hongtao); Chen, WN (Chen Weining); Chang, SS (Chang Sansan); Zhang, Z (Zhang Zhi); Fei, JQ (Fei Jiaqi); Zhang, Y (Zhang Yue); Zhang, GD (Zhang Guangdong); Zhao, Y (Zhao Yue); Fan, EL (Fan Erlei)

Edited by: Wu F; Zhang Y; Ma X; Li X; Fan B

Source: 9TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES (AOMATT 2018): OPTICAL TEST, MEASUREMENT TECHNOLOGY, AND EQUIPMENT  Book Series: Proceedings of SPIE  Volume: 10839  Article Number: UNSP 108391Q  DOI: 10.1117/12.2507810  Published: 2019  

Abstract: In the light of optical-electronic imaging system , designed a continuous zoom lens with a optical aperture of 60mm and a zoom range of 18-246mm. Summarized the disadvantages of the former zoom lens and a low temperature resistant and high precision structure , named the special-shaped slide and cam zoom structure is proposed, and carrying out the theoretical analysis and the detailed structural design. Theoretical analysis shows that this kind of structure can make the sliding friction between the cam and the main mirror tube turned into rolling friction , thus reducing the torque demand it also helps to eliminate the stuck phenomenon of the cam in low temperature environment .The special-shaped slide frame structure can help eliminate the tilt Angle of the moving mirror group in the zoom process, thus reducing the variation of optic axis .In the he final test, the zoom time is not longer than 8s in the environment which temperature is only -45 degrees C, and the variation of optic axis is smaller than 0.3milliradian,both meet the target requirement.

Accession Number: WOS:000461822400061

Conference Title: 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) - Optical Test, Measurement Technology, and Equipment

Conference Date: JUN 26-29, 2018

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Inst Opt & Elect, Chinese Opt Soc, SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2321-7

Record 24 of 169

Title: Multiband phase-coded signal generation based on a simple photonic bi-phase modulator

Author(s): Gao, YR (Gao, Yiran); Wu, ZH (Wu, Zhonghan); Dai, J (Dai, Jian); Xu, K (Xu, Kun)

Edited by: Li Z

Source: 17TH INTERNATIONAL CONFERENCE ON OPTICAL COMMUNICATIONS AND NETWORKS (ICOCN2018)  Book Series: Proceedings of SPIE  Volume: 11048  Article Number: 1104809  DOI: 10.1117/12.2518297  Published: 2019  

Abstract: A simple photonic approach for the multiband phase-coded microwave generation based on a dual-drive Mach-Zehnder modulator (DDMZM) is proposed. By injecting the 5-bit barker code sequence to the bias of DDMZM, the binary phase-coded microwave signal for multiband radar application is generated. A proof-of-concept experiment is performed. The generation of phase-coded signals tuning from 1 to 9 GHz with 1 to 20 Mbit/s coding rates is verified.

Accession Number: WOS:000465823400008

Conference Title: 17th International Conference on Optical Communications and Networks (ICOCN)

Conference Date: NOV 16-19, 2018

Conference Location: Zhuhai, PEOPLES R CHINA

Conference Sponsors: Sun Yatsen Univ, Jinan Univ, Macau Univ Sci & Technol, SPIE

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2771-0

Record 25 of 169

Title: Joint Optimization of Apodizer and Lyot stop for Coronagraph with Four-Quadrant Phase Mask

Author(s): Ge, R (Ge, Rui); Zhao, H (Zhao, Hui); Li, C (Li, Chuang); Fan, XW (Fan, Xue-wu); Yu, CC (Yu, Cong-cong)

Edited by: Xue S; Zhang X; Nardell C; Zhang Z

Source: SPACE OPTICS, TELESCOPES, AND INSTRUMENTATION (AOPC 2019)  Book Series: Proceedings of SPIE  Volume: 11341  Article Number: UNSP 1134102  DOI: 10.1117/12.2538039  Published: 2019  

Abstract: Exploring exoplanets using stellar coronagraph requires coronagraph with a contrast of 10(-10) or even lower, because the difference in light intensity between the planet and its parent star is very large. To this end, we optimized the coronagraph imaging system with Four-Quadrant Phase-Mask (FQPM) proposed by D. ROUAN et al in 2000. The FQPM has the advantages of high extinction efficiency for the coherent light from the main source, low sensitivity to atmospheric turbulence and large dynamic range. This paper proposed an apodizer with continuous transmission and a Lyot stop optimized in conjunction with the apodizer for FQPM coronagraph, which enhance the nulling ability of FQPM to achieve a high contrast ratio of 10(-12) at 1.25./D and a contrast of 10(-13) at larger distance. Moreover, this optimization method can optimize the non-circular symmetric mask, that is, the optimization method is two-dimensional, rather than one-dimensional optimization in the case of circular symmetry. Then we compare the joint optimization with the optimization of the apodizer only, the results show that the former has better diffraction suppression and concentrating ability than the latter, which makes the energy more concentrated and the peak signal obtained on the detector is stronger. In the follow-up work, we will continue to complete the FQPM coronagraph system, such as adding adaptive optical to correct wavefront distortion, adding considerations for manufacturing precision of optical components and so on.

Accession Number: WOS:000525828600001

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) - Space Optics, Telescopes, and Instrumentation (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3455-8

Record 26 of 169

Title: Modeling and Analysis of Image Rotation for the AIMS Solar Optical Telescope

Author(s): Gong, YB (Gong, Yinbing); Xie, YJ (Xie, Yongjun); Dong, RG (Dong, Rongguang); Mao, XL (Mao, Xianglong); Zhang, T (Zhang, Tao); Xu, SB (Xu, Songbo)

Edited by: Tian A

Source: THIRD INTERNATIONAL CONFERENCE ON PHOTONICS AND OPTICAL ENGINEERING  Book Series: Proceedings of SPIE  Volume: 11052  Article Number: UNSP 1105207  DOI: 10.1117/12.2520199  Published: 2019  

Abstract: The AIMS, a solar telescope with a primary mirror of 1m in diameter, is designed with an off-axis Gregorian optical system and an alt-az mounting structure. The image rotation of the AIMS will be produced both due to alt-az mounting and the movement of folding plane mirrors system during the monitoring of the sun. Therefore, a derotator is planned to correct and compensate the image rotation to make the terminal instruments of the AIMS work properly. The image rotation in astronomical telescopes consists of the object field rotation and the image field rotations. In this paper, the rotation of the object field for the AIMS is presented and calculated. The image field rotation due to the plane mirrors system with the movement of azimuth axis and altitude axis of the AIMS is theoretically determined by using the vector matrix method. The relationships between the image filed rotation and the variation of the azimuth and altitude of the telescope are discussed. This work may be very helpful to evaluate the deroation methods for the AIMS and will provide an important theoretical support for precision control of the derotator to eliminate the image rotation in real time.

Accession Number: WOS:000464740100006

Conference Title: 3rd International Conference on Photonics and Optical Engineering

Conference Date: DEC 05-08, 2018

Conference Location: Xian, PEOPLES R CHINA

Conference Sponsors: Xian Inst Opt & Precis Mech, Xian Technol Univ, State Key Lab Transient Opt & Photon, Chinese Opt Soc, High Speed Photog & Photon Comm, Shaanxi Opt Soc, Opt & Photon Soc Singapore

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2780-2

Record 27 of 169

Title: Improvement of Geometric Calibration Algorithm with Collinear Constraints

Author(s): Guan, Z (Guan, Zhao); Qiao, W (Qiao, Weidong); Yang, JF (Yang, Jianfeng); Xue, B (Xue, Bin); Lv, BG (Lv, Baogang); Wang, NG (Wang, Nange)

Edited by: Jiang Y; Ma X; Li X; Pu M; Feng X; Kippelen B

Source: 9TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTOELECTRONIC MATERIALS AND DEVICES FOR SENSING AND IMAGING  Book Series: Proceedings of SPIE  Volume: 10843  Article Number: 108431C  DOI: 10.1117/12.2506578  Published: 2019  

Abstract: With digital cameras coming into wide-spread use and the intelligence in application system increasingly growing, 3D reconstruction has become an essential part of the vision system. For the sake of achieving it, geometric camera calibration in the context of three-dimensional machine vision must be performed firstly to determine a set of parameters that describe the mapping between 3-D reference coordinates and 2-D image coordinates. In the typical classic method with high calculation accuracy and strong robustness, however, little attention has been paid to initial values of distortion coefficients, and model constraints that make results global optimal. In this paper, we present an improved algorithm based on the traditional calibration method. First, determine exact homography matrices by RANSAC algorithm to reject more error points, solve the initial values of distortion with distortion model, and then constrain the image coordinates of feature points in line by straight lines. Finally, the whole optimized parameters, the suppression of re-projection errors, and the calibration parameters with higher precision are obtained. It becomes a prerequisite for the realization of image fusion and the wide application of computer vision in the field of 3D reconstruction.

Accession Number: WOS:000465823200047

Conference Title: 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) - Optoelectronic Materials and Devices for Sensing and Imaging

Conference Date: JUN 26-29, 2018

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Inst Opt & Elect, Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2329-3

Record 28 of 169

Title: Antimonide-based Visible to Short Wavelength Infrared Bispectral Photodetector

Author(s): Guo, CY (Guo, Chunyan); Ding, Y (Ding, Ying); Wasige, E (Wasige, Edward); Jia, QX (Jia, Qingxuan); Wang, GW (Wang, Guowei); Xu, YQ (Xu, Yingqiang); Niu, ZC (Niu, Zhichuan); Wang, T (Wang, Tao); Tian, JS (Tian, Jinshou); Wu, ZX (Wu, Zhaoxin)

Edited by: Cheben P; Ctyroky J; MolinaFernandez I

Source: INTEGRATED OPTICS: DESIGN, DEVICES, SYSTEMS, AND APPLICATIONS V  Book Series: Proceedings of SPIE  Volume: 11031  Article Number: 1103113  DOI: 10.1117/12.2520738  Published: 2019  

Abstract: We report cylinder photon traps, prism photon traps, and SiO2/Ta2O5 antireflection films added to the active areas of short wavelength infrared detectors. The total device thickness was estimated similar to 3.3 mu m and with the p-i-n structure based on antimonide. The simulation results show that the photon traps increase the absorption of the invisible spectrum distinctly. Also, the optical measurements reveal that maximal responsivity of the detector with PTs array is 0.094A/W in the visible range and 0.64A/W in the short wavelength infrared spectrum. The responsivity in the wavelength of short-wave infrared can be increased apparently as well. Thus, the photon traps array may a potential method for antimonide-based visible to short wavelength infrared bispectral photodetector.

Accession Number: WOS:000485117400018

Conference Title: Conference on Integrated Optics - Design, Devices, Systems, and Applications V, held at SPIE Optics + Optoelectronics

Conference Date: APR 01-03, 2019

Conference Location: Prague, CZECH REPUBLIC

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2728-4; 978-1-5106-2729-1

Record 29 of 169

Title: Influence of electro-optical crystal flatness on indirect modulation signal for underwater blue-green laser communication

Author(s): Han, B (Han, Biao); Wang, W (Wang, Wei); Zheng, YQ (Zheng, Yunqiang); Shi, K (Shi, Kui); Meng, JC (Meng, Jiacheng); Su, YL (Su, Yulong); Wang, T (Wang, Tao); Han, Y (Han, Yi); Xie, XP (Xie, Xiaoping); Zhao, W (Zhao, Wei)

Edited by: Tian Y; Xiao T; Liu P

Source: SECOND SYMPOSIUM ON NOVEL TECHNOLOGY OF X-RAY IMAGING  Book Series: Proceedings of SPIE  Volume: 11068  Article Number: 1106823  DOI: 10.1117/12.2524680  Published: 2019  

Abstract: Indirect modulation with electro-optical crystal is a useful way to generate optical signal for underwater blue-green laser communication. However, as crystal surface is not strictly flat in practical application, light intensity distribution in the cross section is non-uniform, which would affect extinction ratio of modulated signal and system performance. In this letter, we study this issue with Monte Carlo method. The result shows that with the increase of crystal flatness, extinction ratio is decreasing dramatically, and it should be smaller than 0.78 mu m in order to make the extinction ratio greater than 10dB while 0.25 mu m for 20dB, 0.08 mu m for 30dB, and 0.025 mu m for 40dB.

Accession Number: WOS:000473327700074

Conference Title: 2nd Symposium on Novel Technology of X-Ray Imaging

Conference Date: NOV 26-28, 2018

Conference Location: Hefei, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Sci & Technol China, Natl Synchrotron Radiat Lab, N Night Vis Technol Co Ltd, Chinese Acad Sci, Shanghai Ins Appl Phys, Chinese Acad Sci, Inst High Energy Phys, China Ins Atom Energy

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2827-4

Record 30 of 169

Title: Streaking of Argon L-shell Auger emissions with >250 eV attosecond X-ray pulses

Author(s): Han, S (Han, Seunghwoi); Xu, P (Xu, Peng); Wang, YS (Wang, Yishan); Zhao, K (Zhao, Kun); Chang, ZH (Chang, Zenghu)

Book Group Author(s): IEEE

Source: 2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)  Book Series: Conference on Lasers and Electro-Optics  Published: 2019  

Abstract: We investigate the Argon Auger decay using isolated attosecond X-ray pulses reach the Carbon K-edge. A home-built electron spectrometer resolves and measures lifetimes of L-shell vacancies of Argon in pump-probe experiment. (c) 2019 The Author(s)

Accession Number: WOS:000482226300092

Conference Title: Conference on Lasers and Electro-Optics (CLEO)

Conference Date: MAY 05-10, 2019

Conference Location: San Jose, CA

Conference Sponsors: IEEE, AdValue Photon, Amer Elements, Class5 Photon, Coherent, GoFoton, Light Convers, LightTrans, MKS, OZ Opt Online, Santec, ThorLabs, UQDevices, YSL Photon

Author Identifiers:

ISSN: 2160-9020

ISBN: 978-1-943580-57-6

Record 31 of 169

Title: Principle Component Analysis and Random Forest Based All-Fiber Activity Monitoring

Author(s): Han, SY (Han, Shuying); Xu, W (Xu, Wei); You, SH (You, Shanhong); Dong, B (Dong, Bo); Yu, CY (Yu, Changyuan); Zhao, W (Zhao, Wei)

Book Group Author(s): IEEE

Source: 2019 ASIA COMMUNICATIONS AND PHOTONICS CONFERENCE (ACP)  Book Series: Asia Communications and Photonics Conference and Exhibition  Published: 2019  

Abstract: An activity monitoring algorithm based on principle component analysis and random forest is proposed, identifying three kinds of activities obtained from Mach-Zehnder interferometer with accuracy of 99.5% within one second, namely, normal, nobody and movement.

Accession Number: WOS:000542671100477

Conference Title: Asia Communications and Photonics Conference (ACP)

Conference Date: NOV 02-05, 2019

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: IEEE, OSA, SPIE, IEEE Photon Soc, COS, CIC

Author Identifiers:

ISSN: 2162-108X

ISBN: 978-1-943580-70-5

Record 32 of 169

Title: Research on underwater high-speed blue-green optical communication technology based on blue LD array

Author(s): Han, Y (Han, Yi); Zheng, YQ (Zheng, Yunqiang); Shi, K (Shi, Kui); Wang, T (Wang, Tao); Xie, XP (Xie, Xiaoping); Meng, JC (Meng, Jiacheng); Wang, W (Wang, Wei); Duan, T (Duan, Tao); Han, B (Han, Biao); Wan, RG (Wan, Rengang); Sun, KL (Sun, Kelin)

Edited by: Tian Y; Xiao T; Liu P

Source: SECOND SYMPOSIUM ON NOVEL TECHNOLOGY OF X-RAY IMAGING  Book Series: Proceedings of SPIE  Volume: 11068  Article Number: 110680U  DOI: 10.1117/12.2523916  Published: 2019  

Abstract: In underwater wireless optical communication (UWOC), one of the key technologies is to generate high-speed communication signal for transmitter. In this paper, we designed such transmitter based on laser diode (LD) arrays, which is composed of three LDs with central wavelength 450nm. The modulation format is non-return-to-zero on-off keying (NRZ-OOK) with data rate up to 50Mbps. Using such transmitter, we established a point-to-point underwater wireless optical communication link in an experimental tank with 20m length, 20m width and 14 depth. The experimental results show that the maximum error-free data rate of the system can reach 50Mbps with 10.7m transmission distance, while the maximum error-free transmission rate is 30Mbps with 14.7m transmission distance. These results verify the feasibility of the LD-based modulation scheme for high-speed UWOC applications.

Accession Number: WOS:000473327700029

Conference Title: 2nd Symposium on Novel Technology of X-Ray Imaging

Conference Date: NOV 26-28, 2018

Conference Location: Hefei, PEOPLES R CHINA

Conference Sponsors: Chinese Soc Opt Engn, Univ Sci & Technol China, Natl Synchrotron Radiat Lab, N Night Vis Technol Co Ltd, Chinese Acad Sci, Shanghai Ins Appl Phys, Chinese Acad Sci, Inst High Energy Phys, China Ins Atom Energy

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2827-4

Record 33 of 169

Title: High contrast optical system design for exoplanets imaging

Author(s): Hao, BZ (Hao, Bo-Zun); Fan, XW (Fan, Xue-Wu); Yuan, H (Yuan, Hao)

Edited by: Xue S; Zhang X; Nardell C; Zhang Z

Source: SPACE OPTICS, TELESCOPES, AND INSTRUMENTATION (AOPC 2019)  Book Series: Proceedings of SPIE  Volume: 11341  Article Number: UNSP 113411E  DOI: 10.1117/12.2545687  Published: 2019  

Abstract: In this paper, a stellar coronagraph system with wavefront correct instrument is proposed, the optical design and image quality evaluation of the system are carried out, including the optical design of the front telescope system, the collimator instrument, wavefront correcting system in coronagraph and the optical design of the imaging lens. The front system used a structure of off-axis double-mirror telescope, with a diameter of 2.4m, 16 for F, and a FoV of 10 "x10", The design requirements of the coronagraph instrument is: wavelength band is 450nm to 950nm, the detector is a EMCCD with the resolution of 1kx1k, pixel size of 13 mu m, the diameter of deformable mirror is 10mm. The design requirements of the imaging lens is: the optical aperture D is 5mm, F# is 15, the magnification of beam expander is 12.6 X. In this article, the coronagraph instrument system adopts the phase plate and the Lyot aperture and add the combination of the design and a deformable mirror is used to correct wavefront while a Lyot aperture is used for blocking the remnants of the star light, the introduction of the deformable mirror system can better eliminate both speckle noise and fixed optical surface error influences on imaging quality, also can correct the dynamic error.The design results show that: on the image plane, at the wavelength of requirement, the wavefront RMS value was less than 0.02 lambda, the result show that the wavefront error of the system reached the diffraction limit, it also means that the optical design of the whole system meet the design standard of coronagraph.

Accession Number: WOS:000525828600049

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) - Space Optics, Telescopes, and Instrumentation (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3455-8

Record 34 of 169

Title: Collect and Select: Semantic Alignment Metric Learning for Few-Shot Learning

Author(s): Hao, FS (Hao, Fusheng); He, FX (He, Fengxiang); Cheng, J (Cheng, Jun); Wang, L (Wang, Lei); Cao, JZ (Cao, Jianzhong); Tao, DC (Tao, Dacheng)

Book Group Author(s): IEEE

Source: 2019 IEEE/CVF INTERNATIONAL CONFERENCE ON COMPUTER VISION (ICCV 2019)  Book Series: IEEE International Conference on Computer Vision  Pages: 8459-8468  DOI: 10.1109/ICCV.2019.00855  Published: 2019  

Abstract: Few-shot learning aims to learn latent patterns from few training examples and has shown promises in practice. However, directly calculating the distances between the query image and support image in existing methods may cause ambiguity because dominant objects can locate anywhere on images. To address this issue, this paper proposes a Semantic Alignment Metric Learning (SAML) method for few-shot learning that aligns the semantically relevant dominant objects through a "collect-and-select" strategy. Specifically, we first calculate a relation matrix (RM) to "collect" the distances of each local region pairs of the 3D tensor extracted from a query image and the mean tensor of the support images. Then, the attention technique is adapted to "select" the semantically relevant pairs and put more weights on them. Afterwards, a multi-layer perceptron (MLP) is utilized to map the reweighted RMs to their corresponding similarity scores. Theoretical analysis demonstrates the generalization ability of SAML and gives a theoretical guarantee. Empirical results demonstrate that semantic alignment is achieved. Extensive experiments on benchmark datasets validate the strengths of the proposed approach and demonstrate that SAML significantly outperforms the current state-of-the-art methods. The source code is available at https://github.com/haofusheng/SAML.

Accession Number: WOS:000548549203058

Conference Title: IEEE/CVF International Conference on Computer Vision (ICCV)

Conference Date: OCT 27-NOV 02, 2019

Conference Location: Seoul, SOUTH KOREA

Conference Sponsors: IEEE, IEEE Comp Soc, CVF

Author Identifiers:

ISSN: 1550-5499

ISBN: 978-1-7281-4803-8

Record 35 of 169

Title: Design of deviation detector for image stabilization system on space solar observation equipment

Author(s): He, JW (He, Jiawei); Yang, J (Yang, Jianfeng); Zhang, HY (Zhang, Haiying)

Edited by: Jiang Y; Ma X; Li X; Pu M; Feng X; Kippelen B

Source: 9TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: OPTOELECTRONIC MATERIALS AND DEVICES FOR SENSING AND IMAGING  Book Series: Proceedings of SPIE  Volume: 10843  Article Number: 108431A  DOI: 10.1117/12.2506541  Published: 2019  

Abstract: The space solar observation equipment takes the spacecraft as the platform, and the vibration of spacecraft will have influence over the observation. Therefore, we need to develop the image stabilization system to ensure the imaging resolution. In this paper, a method for detecting the centroid deviation of solar facula is proposed. A photodiode-based deviation detector was designed based on the requirements of the image stabilization system for the Full-disc vector Magneto Graph. Compared with the traditional method of deviation detecting, it has faster response rate, lower power consumption. Backup design is added to improve the reliability of the work on orbit. According to the test results, a resolution of 5 mu m is achieved within the working range. It can cooperate with the steering mirror mechanism to form the image stabilization system and serve the Full-disc vector Magneto Graph.

Accession Number: WOS:000465823200045

Conference Title: 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT) - Optoelectronic Materials and Devices for Sensing and Imaging

Conference Date: JUN 26-29, 2018

Conference Location: Chengdu, PEOPLES R CHINA

Conference Sponsors: Chinese Acad Sci, Inst Opt & Elect, Chinese Opt Soc, SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2329-3

Record 36 of 169

Title: Development of High Power Annular Diode Laser Array Using Hard Solder

Author(s): Hou, D (Hou, Dong); Sun, LC (Sun, Lichen); Fu, TW (Fu, Tuanwei); Chen, L (Chen, Li); Liang, XJ (Liang, Xuejie); Cai, L (Cai, Lei); Yang, Y (Yang, Yan); Wang, JW (Wang, Jingwei); Yan, MN (Yan, Minna); Zah, CG (Zah, Chungen); Liu, XS (Liu, Xingsheng)

Edited by: Glebov AL; Leisher PO

Source: COMPONENTS AND PACKAGING FOR LASER SYSTEMS V  Book Series: Proceedings of SPIE  Volume: 10899  Article Number: UNSP 108990A  DOI: 10.1117/12.2510023  Published: 2019  

Abstract: High power QCW diode laser stacks have been widely used in pumping applications for years. Different package structures of diode laser stacks are applied for pumping the cylindrical rod crystal, such as modular G-Stack, horizontal, vertical and annular arrays Annular array is preferred in pumping of QCW mode with low duty cycle and short pulse width, due to the advantage of compact structural size, uniform light beam distribution and convenient electric connection. However, the development of annular diode laser array using hard solder is difficult because of the complex bonding process of diode laser on annular heatsink with conventional bonding fixture. Furthermore the stress and thermal behavior is yet to be well studied on the annular diode laser array. In this work, a sophisticated annular diode laser array was developed using hard solder. Optimized structure and thermal design were conducted to achieve uniform light beam distribution and good heat dissipation. Stress release structure of diode laser stack is applied to reduce the risk of chip crack and deviation of spatial spectrum. The annular diode laser array consists of 44 bars in a ring, with the peak output power of each bar over 500W. The maximum output power of each bar reaches 673 W.

Accession Number: WOS:000468808800006

Conference Title: Conference on Components and Packaging for Laser Systems V

Conference Date: FEB 04-06, 2019

Conference Location: San Francisco, CA

Conference Sponsors: SPIE

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-2441-2

Record 37 of 169

Title: Optical system design of dual-band observation and imaging

Author(s): Hou, P (Hou Pan); Zhu, Q (Zhu Qing); Li, RC (Li Ruichang); Ma, ZP (Ma Zhanpeng)

Edited by: Xue S; Zhang X; Nardell C; Zhang Z

Source: SPACE OPTICS, TELESCOPES, AND INSTRUMENTATION (AOPC 2019)  Book Series: Proceedings of SPIE  Volume: 11341  Article Number: UNSP 113410K  DOI: 10.1117/12.2541899  Published: 2019  

Abstract: In this paper, a dual-band (visible light and SWIR) observation and imaging optical system is proposed. The system can acquire the optical characteristics of the target in the range of 900nm-1700nm by imaging. SWIR imaging not only can get the infrared characteristics of the target, but also has the ability of anti-camouflage and through-fog. It makes up for the deficiency of visible light imaging. The integrated system of visible light and SWIR can be widely used in military monitoring, forest fire prevention, geodesy and other fields, and has high practical values. The integrated system shares the front group of telescopic objective and shares the field of view. The visual observation system working in the visible band, the diameter of the entrance pupil is 24mm, the diameter of the exit pupil is 6mm, the distance of the exit pupil is more than 20mm, and the visual magnification is-4x. The SWIR imaging system working in 900nm-1700nm, and the diameter of the pupil is 24mm, and the focal length is 117.3mm. The field of view is 6 for the two systems. The design and analysis results show that the system has dual-channel imaging of visible light and SWIR with common field of view, which can obtain clear visual images and digital images. The quality of the visual system and the imaging system meet the needs.

Accession Number: WOS:000525828600019

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) - Space Optics, Telescopes, and Instrumentation (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3455-8

Record 38 of 169

Title: Review on the Research of Space-based Direct Imaging Technologies for Exoplanets Detection

Author(s): Hu, B (Hu, Bin); Li, C (Li, Chuang); Li, XY (Li, Xuyang)

Edited by: Xue S; Zhang X; Nardell C; Zhang Z

Source: SPACE OPTICS, TELESCOPES, AND INSTRUMENTATION (AOPC 2019)  Book Series: Proceedings of SPIE  Volume: 11341  Article Number: UNSP 113410U  DOI: 10.1117/12.2542957  Published: 2019  

Abstract: The detection of exoplanets is a hot topic in international astronomy nowadays. The methods of exoplanets detection are mainly divided into indirect detection and direct imaging. Direct imaging of exoplanets is being pursued by a number of research groups around the world. In this paper, the research status of space-based direct imaging technologies for exoplanets detection is reviewed, and the advantages and disadvantages of related technologies are analyzed and summarized. The most advantageous and promising space-based nulling interferometry technologies are described in detail, including some laboratory verification studies based on ground-based astronomical telescopes. With the continuous development of spacecraft micro-Newton propulsion and high-precision positioning control, ultra-high-precision laser measurement, adaptive optics, integrated optics, etc., space-based direct imaging technologies for exoplanets detection will continue to make breakthroughs.

Accession Number: WOS:000525828600029

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) - Space Optics, Telescopes, and Instrumentation (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

Author Identifiers:

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3455-8

Record 39 of 169

Title: MAP Detection of Probabilistically Shaped Constellations in Optical Fiber Transmissions

Author(s): Hu, SH (Hu, Shaohua); Zhang, WJ (Zhang, Wenjing); Yi, XW (Yi, Xingwen); Li, ZH (Li, Zhaohui); Li, F (Li, Fan); Huang, XN (Huang, Xinning); Zhu, MY (Zhu, Mingyue); Jingzhang (Jingzhang); Qiu, K (Qiu, Kun)

Book Group Author(s): IEEE

Source: 2019 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC)  Published: 2019  

Abstract: We present the theoretical analysis and experimental demonstration of MAP detection that outperforms the conventional detection for probabilistically shaped constellations in optical fiber transmissions. Larger BER improvements are observed for the stronger shaped constellations.

Accession Number: WOS:000469837300154

Conference Title: Optical Fiber Communications Conference and Exhibition (OFC)

Conference Date: MAR 03-07, 2019

Conference Location: San Diego, CA

Conference Sponsors: IEEE, 3M, AC Photon Inc, Acacia Commun Inc, AIM Photon, Alibaba Grp, APAC Opto, Cadence, Ciena, ColorChip, Corning, European Patent Off, GoFoton, Huawei, HYC Co Ltd, Infinera, Inno Instrument, Intel, Juniper Networks, Ligentec, Menara Networks, Nextrom, NTT Elect, Optomind, OZ Opt Online, Prysmian Grp, Samtec, Santec, Sanwa, Sumitomo Elect, Synopsys, Tektronix, VeEX, VPI Photon, XFS, XILINX, YOFC, ZEUS

Author Identifiers:

ISBN: 978-1-9435-8053-8

Record 40 of 169

Title: Open-Category Classification of Hyperspectral Images based on Convolutional Neural Networks

Author(s): Huang, TT (Huang, Tingting); Wang, S (Wang, Shuang); Zhang, G (Zhang, Geng); Wang, XJ (Wang, Xueji); Liu, S (Liu, Song)

Edited by: Emrouznejad A

Source: PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE AND APPLICATION ENGINEERING (CSAE2019)  DOI: 10.1145/3331453.3362049  Published: 2019  

Abstract: The application of the hyperspectral image (HSI) classification has become increasingly important in industry, agriculture and military. In recent years, the accuracy of HIS classification has been greatly improved through deep learning based methods. However, most of the deep learning models tend to classify all the samples into categories that exist in the training data. In real world classification tasks, it is difficult to obtain samples from all categories that exist in the whole hyperspectral image. In this paper, we design a framework based on convolutional neural networks and probability thresholds(CNPT) in order to deal with the open-category classification(OCC) problem. Instead of classifying samples of categories that do not exist in the training process to be any known class, the proposed method mark them as unseen category. We first get samples of unseen class from labeled data. With a lightweight convolutional network that fully uses the spectral-spatial information of HSI, we obtain the probabilities for each seen class for every sample. By adding a threshold to the maximum probabilities, we classify some samples to unseen category. A balanced score called F-ue which considers both the recall rate of unseen class and the overall accuracy of seen classes is proposed in this paper, and we use it to select the threshold and evaluate the performance of CNPT. The experimental results show that our proposed algorithm performs well on hyperspectral data, and has generalizability on different datasets.

Accession Number: WOS:000518640300123

Conference Title: 3rd International Conference on Computer Science and Application Engineering (CSAE)

Conference Date: OCT 22-24, 2019

Conference Location: Sanya, PEOPLES R CHINA

Conference Sponsors: Assoc Comp Machinery, Assoc Sci & Engn

Author Identifiers:

ISBN: 978-1-4503-6294-8

Record 41 of 169

Title: Research on mirror surface shape of space camera fitting based on SVD

Author(s): Huang, T (Huang Tuo); Chen, RL (Chen Rong-li); Chu, CB (Chu Chang-bo)

Edited by: Xue S; Zhang X; Nardell C; Zhang Z

Source: SPACE OPTICS, TELESCOPES, AND INSTRUMENTATION (AOPC 2019)  Book Series: Proceedings of SPIE  Volume: 11341  Article Number: UNSP 113410T  DOI: 10.1117/12.2542929  Published: 2019  

Abstract: Large-aperture optics mirror is one of the high resolution space camera's key components. The mirror surface shape accuracy which is subjected to external loadings can be obtained through fitting mirror surface shape. Zernike polynomials is widely used in fitting mirror surface shape due to the outstanding advantages, such as high precision and good convergence.Two methods of fitting mirror surface shape via Zernike polynomials are introdeced in this paper, namely, mirror surface deformation fitting and mirror surface shape fitting directly. Taking spherical mirror for example, the relation between the number of terms in Zernike polynomials and the fitting precision is investigated. During fitting mirror surface shape, the constructed normal equations are ill-conditioned. Reliable results cannot be obtained via the normal equation method. Singular value decomposition (SVD) method is presented to solve the abnormal equations in this paper. Through calculating the PV value and the RMS value between the fitting mirror surface and the standard spherical mirror surface, the influence of Zernike polynomials terms on the fitting precision is investigated. In the end, a design example is tested to show effectiveness of the proposed method. By fitting a deformed spherical mirror surface shape under the load condition of 1g gravity using 28-term Zernike polynomials, achieving the fitting residual, the PV value is 19.7nm and the RMS value is 3.97nm.

Accession Number: WOS:000525828600028

Conference Title: Annual Conference of Chinese-Society-of-Optical-Engineering (CSOE) - Space Optics, Telescopes, and Instrumentation (AOPC)

Conference Date: JUL 07-09, 2019

Conference Location: Beijing, PEOPLES R CHINA

Conference Sponsors: SPIE, Chinese Soc Opt Engn, Chinese Soc Astronaut, Photoelectron Technol Comm, Sci & Technol Low Light Level Night Vis Lab, Sci & Technol Electro Opt Informat Secur Control Lab, Acad Opto Elect Elect Technol China, Infrared & Laser Engn, Opt Soc Korea, Opt & Photon Soc Singapore, European Opt Soc, Opt Soc Japan

ISSN: 0277-786X

eISSN: 1996-756X

ISBN: 978-1-5106-3455-8

Record 42 of 169

Title: Study on Aerodynamic Optimization Design Method Analysis and Control Algorithm of the Pod

Author(s): Huang, W (Huang, Wei); Xie, ML (Xie, Meilin); Yang, XX (Yang, Xiaoxu); Lian, XZ (Lian, Xuezheng); Zhang, YH (Zhang, Yihang)

Edited by: Xu B

Source: PROCEEDINGS OF 2019 IEEE 8TH JOINT INTERNATIONAL INFORMATION TECHNOLOGY AND ARTIFICIAL INTELLIGENCE CONFERENCE (ITAIC 2019)  Pages: 636-640  DOI: 10.1109/itaic.2019.8785557  Published: 2019  

Abstract: Based on the use and function of the airborne pod, the stability and tracking accuracy indexs are the guarantee of obtaining high-quality images under the flight environment, and also a premise of successfully completing various tasks. Aiming at the aircraft subsonic pod in high-speed flight environment, in order to achieve full spectrum segment detection, the pod adopts the open form to complete pointing and tracking functions through the two-dimensional command motion of the pendulum mirror in the head of the pod. In this paper, the coupling relation, which is aircraft disturbance conversion to the pendulum mirror, is analyzed firstly. Then according to the difficulties about the control of the pendulum mirror in high-speed flight caused by the wind resistance, Reynolds average method and large eddy simulation method are used to calculate the fluid simulation, and the traditional response surface method and the concomitant method based on the control theory are adopted to optimize the shape design of the aerodynamic cover and the open cabin. On the basis of optimization, an acceleration ring is introduced into the control loop to improve the response speed and cope with the adverse torque disturbance environment caused by the window opening. Finally, the control loop is simulated in the Simulink environment. The results show that the stability accuracy of system is 0.1366mrad (RMS), which can be applied to existing mounted pods.

Accession Number: WOS:000502359500123

Conference Title: IEEE 8th Joint International Information Technology and Artificial Intelligence Conference (ITAIC)

Conference Date: MAY 24-26, 2019

Conference Location: Chongqing, PEOPLES R CHINA

Conference Sponsors: IEEE, IEEE Beijing Sect, Chongqing Global Union Acad Sci & Technol, Chongqing Univ Technol, Chengdu Global Union Acad Sci & Technol, Chongqing Geeks Educ Technol Co Ltd

ISBN: 978-1-5386-8178-7

Record 43 of 169

Title: Broadband Photonic RF channelization based on an integrated optical micro-comb source

Author(s): Jia, LN (Jia, Linnan); Xu, XY (Xu, Xingyuan); Wu, JY (Wu, Jiayang); Tan, MX (Tan, Mengxi); Nguyen, TG (Nguyen, Thach G.); Chu, ST (Chu, Sai T.); Little, BE (Little, Brent E.); Morandotti, R (Morandotti, Roberto); Mitchell, A (Mitchell, Arnan); Moss, DJ (Moss, David J.)

Edited by: Mitchell A; RubinszteinDunlop H

Source: AOS AUSTRALIAN CONFERENCE ON OPTICAL FIBRE TECHNOLOGY (ACOFT) AND AUSTRALIAN CONFERENCE ON OPTICS, LASERS, AND SPECTROSCOPY (ACOLS) 2019  Book Series: Proceedings of SPIE  Volume: 11200  Article Number: UNSP 112002M  DOI: 10.1117/12.2540360  Published: 2019  

Abstract: We demonstrate broadband radio frequency (RF) channelization based on a CMOS-compatible integrated optical micro-comb source, which provides a large number of wavelength channels as well as an RF operation bandwidth of similar to 90 GHz. We experimentally verify the RF channelization performance from similar to 1.7 GHz to similar to 19 GHz with a high spectral slice resolution of similar to 1.04 GHz.

Accession Number: WOS:000534205100065

Conference Title: AOS Australian Conference on Optical Fibre Technology (ACOFT) / Australian Conference on Optics, Lasers, and Spectroscopy (ACOLS)

Conference Date: DEC 09-12, 2019

Conference Location: Melbourne, AUSTRALIA

Conference Sponsors: Australian Opt Soc, SPIE

Author Identifiers: