中国科学院机构知识库网格系统: 检索

A Chip-Level Optical Interconnect for CPU 期刊论文 OAI收割
IEEE PHOTONICS TECHNOLOGY LETTERS, 2021, 卷号: 33, 期号: 16, 页码: 852-855
作者: Hao, Qinfen; Qin, Mengyuan; Qi, Nan; Xue, Haiyun; Han, Meng

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收藏 | 浏览/下载：65/0 | 提交时间：2021/12/01

Integrated optics Optical interconnections Transceivers Adaptive optics Optical switches Optical sensors Power demand Optical interconnections digital integrated circuits very high speed integrated circuits chip scale packaging system integration

Design of parallel wave-front restoration algorithm based on FPGA 期刊论文 OAI收割
OPTIK, 2019, 卷号: 176, 页码: 168-174
作者: Yang, Xiaoxia; Lin, Xudong; Wang, Liang; Zhao, Jinyu; Wang, Jianli

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收藏 | 浏览/下载：57/0 | 提交时间：2019/08/21

Parallel wave-front restoration algorithm Adaptive optical system Wave-front processor Close-loop control FPGA

Mixed sensitivity H-infinity control of an adaptive optics system 期刊论文 OAI收割
Optical Engineering, 2016, 卷号: 55, 期号: 9, 页码: 094106
作者: Song, Dingan; Li, Xinyang; Peng, Zhenming

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收藏 | 浏览/下载：22/0 | 提交时间：2018/06/14

Aberrations Adaptive Optics Codes (Symbols) Control Controllers Optical Systems Robustness (Control Systems) Stability System Stability Uncertain Systems Wavefronts

Design and Simulation of Adaptive Optics controller Based on Mixed Sensitivity H-infinity control 期刊论文 OAI收割
Proceedings of SPIE: 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 2016, 卷号: 9682, 页码: 96820H
作者: Song, Dingan; Li, Xinyang; Peng, Zhenming

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收藏 | 浏览/下载：29/0 | 提交时间：2018/06/14

Aberrations Adaptive Control Systems Codes (Symbols) Controllers Manufacture Mirrors Optical Testing Robustness (Control Systems) Stability System Stability Telescopes Uncertain Systems Wavefronts

Spot detection based on the Hartmann subaperture 期刊论文 OAI收割
Proceedings of SPIE: 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED OPTICAL MANUFACTURING AND TESTING TECHNOLOGIES: LARGE MIRRORS AND TELESCOPES, 2016, 卷号: 9682, 页码: 96820K
作者: Chen, Zhongfeng; Zhou, Luchun

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收藏 | 浏览/下载：23/0 | 提交时间：2018/06/14

The Adaptive Optical System Hartmann-shack Wavefront Sensor Sub-spot Detection Template Matching

Pointing error due to retroreflector array in compact common path/common mode adaptive optical system 期刊论文 OAI收割
OPTICS COMMUNICATIONS, 2012, 卷号: 285, 期号: 17, 页码: 3618-3622
作者: Huang, Jian; Xian, Hao; Li, Xiaofeng; Zhang, Peng; Jiang, Dagang

收藏 | 浏览/下载：28/0 | 提交时间：2015/07/10

Pointing error Common path/common mode adaptive optical system Retroreflector array Intensity distribution

Research on satellite platform vibration compensation method based on liquid crystal steering system (EI CONFERENCE) 会议论文 OAI收割
2011 SSITE International Conference on Future Material Research and Industry Application, FMRIA 2011, December 1, 2011 - December 2, 2011, Macau, China
作者: Wen M.

收藏 | 浏览/下载：17/0 | 提交时间：2013/03/25

This paper presents the disturbance compensation scheme based on liquid crystal steering system according to the problem that satellite platform vibration affects the tracking and pointing accuracy in space optical communication. The mathematical model of liquid crystal steering system is built. For improving convergence speed the adaptive controller based on posteriori estimation errors RLS lattice filter is designed which not only achieves fast adaptation but also reaches optimal steady-state disturbance compensation. Finally the simulation results show that this control scheme is valid and feasible. (2012) Trans Tech Publications Switzerland.

Research on satellite platform vibration compensation technology for space optical communication (EI CONFERENCE) 会议论文 OAI收割
2012 International Meeting on Opto-Electronics Engineering and Materials Research, OEMR 2012, July 27, 2012 - July 29, 2012, Shenyang, Liaoning, China
Han C.; Li X.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

The piezo-electric steering control system is used to compensate the vibration of satellite platform. The mathematical model of piezo-electric steering system is built. The adaptive controller based on improved LMS filter algorithm is designed according to this system characteristic. The adaptive delay filter is designed to solve slow convergence speed problem of traditional algorithm. Meanwhile the adaptive delay filter can also compensate phase delay of control circuit. The adaptive deviation filter is introduced and it effectively compensates the vibration deviation which is low frequency and high amplitude. The experimental results show that the remained errors are rad which meets space optical communication requirement and proves that this control scheme is valid and feasible. (2012) Trans Tech Publications Switzerland.

Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者: Dong Y.-X.; Zhang H.-B.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：111/0 | 提交时间：2013/03/25

Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms such as adaptive background prediction detecting method. When background has dispersion-decreasing structure the traditional target detection algorithms would be more useful. But when the background has large gray gradient such as sea-sky-line sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature in our opinion from the perspective of mathematics the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore the purpose of the image preprocessing is to reduce the effects from noise also to raise the SNR of image and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics the median filter is used to eliminate noise improve signal-to-noise ratio then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).

Electro-optical imaging system identification using pseudo-random binary pattern (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China
Le Y.; Jian W.; Jianzhong Z.; Qiang S.; Jianzhuo L.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

A method using pseudo-random binary pattern is developed for electro-optical imaging system identification. The imaging system is taken as a stable linear time-invariant and causal filter and its transfer function is measured through the pseudo-random binary sequence impulse responses identification. A digital mirror device (DMD) light projector is developed as the target generator and wavelet thresholding is used to denoise the captured image. Pre-filtering spectral estimation algorithm with adaptive parameter selection is also proposed for the identification process overcoming the challenge brought by the size limit derived from the optical isoplantic region. Simulations and experiments are presented to show the effectiveness of the proposed method.0-64. 2010 IEEE.