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Study on the sensitivity of temperature gradient for large aperture SiC lightweight mirror based on active optics 会议论文
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, AOMATT 2014, April 26, 2014 - April 29, 2014, Harbin, China
Liu X.; Zhang J.; Wu X.; Li J.; Guo P.; An Q.
收藏  |  浏览/下载：16/0  |  提交时间：2015/04/27
Research on influence of space-borne stereo mapping camera's time synchronization precision on attitude angle errors 会议论文
International Symposium on Optoelectronic Technology and Application 2014: Optical Remote Sensing Technology and Applications, IPTA 2014, May 13, 2014 - May 15, 2014, Beijing, China
Wu X.; Liu J.; Long K.; Zhou H.; Zhang B.
收藏  |  浏览/下载：12/0  |  提交时间：2015/04/27
A small thickness measurement system based on PSD and FPGA (EI CONFERENCE) 会议论文
3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011, January 6, 2011 - January 7, 2011, Shanghai, China
Guo J.; He X.; Wei Z.; Wu Y.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
Considering that the requirement of industrial manufacture  An AT89S51 singlechip works as the core processor of the system. By two laser triangulation  a small thickness measurement system based on PSD and FPGA is presented. It takes S3931 PSD of one dimension as position detection device  A FPGA produces logic control signals for the whole system  the small displacement is converted to differential voltages  which is made by Hamamatsu in Japan  and after amplification and A/D transformation  8-bit parallel data is send to singlechip from FPGA by external interrupts  and the final calculation results output to the LCD display module. After digital micro meter calibration  we get the small thickness. Experiments show that the detection accuracy of the system is not less than 10um.  
Research on Radiometric Calibration of Interline Transfer CCD Camera Based on TDI Working Mode 会议论文
2010
Wu X. X.; Liu J. G.
收藏  |  浏览/下载：8/0  |  提交时间：2013/03/28
The movement estimation of target and background by fourier phase spectrum difference (EI CONFERENCE) 会议论文
2010 6th International Conference on Wireless Communications, Networking and Mobile Computing, WiCOM 2010, September 23, 2010 - September 25, 2010, Chengdu, China
Wu Y.; Zhang S.; Wang J.; Jia J.; Yu Q.; Zhang X.
收藏  |  浏览/下载：11/0  |  提交时间：2013/03/25
Animated models coarsening with local area distortion and deformation degree control 会议论文
2010
Zhang S. X.; Wu Y. H.; Zhao J. Y.
收藏  |  浏览/下载：11/0  |  提交时间：2013/03/28
Dynamic closed-loop test for real-time drift angle adjustment of space camera on the Earth (EI CONFERENCE) 会议论文
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
Hu J.; Cao X.; Wang D.; Wu W.; Xu S.
收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25
In order to eliminate the influence of aircraft attitude angle to the image quality of space camera  and assure that the drift angle of space camera could be accurately adjusted at the orbit  a novel closed-loop test method is provided for real-time drift angle adjustment of space camera on the Earth. A long focal length dynamic aim generator is applied to simulate the image motion and the variety drift angle  and to detect the precision of the image motion compensation machinery and the capability of the drift angle control system. The computer system is used to control the dynamic aim generator  accomplish the data processing  transmit and receive the data information. The seamless connection and the data transmission between the aim generator and the aircraft simulation devices are constituted. The command  parameter and drift angle data transmitted by the simulation devices are received by the space camera at the real time  then the photos are taken and the draft angle is adjusted simultaneously. It is shown that the drift angle can be accurately tracked by the space camera at the real time  and the detective method satisfies the test requirement. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Design of real-time small target detection system for infrared image based on FPGA (EI CONFERENCE) 会议论文
2010 International Conference on Optics, Photonics and Energy Engineering, OPEE 2010, May 10, 2010 - May 11, 2010, Wuhan, China
Qu F.; Liu J.; Xu H.; Ye X.; Yang D.; Wang J.; Piao R.; Wu H.; Sun Q.
收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25
Research on Automatic Multispectral Images Synthesis of Space Camera 会议论文
2010
Wu X. X.; Liu J. G.; Zhou H. D.; Kong D. Z.; Lv S. L.
收藏  |  浏览/下载：7/0  |  提交时间：2013/03/28
Dynamic Closed-loop Test for Real-time Drift Angle Adjustment of Space Camera on the Earth 会议论文
2010
Hu J.; Cao X. T.; Wang D.; Wu W. P.; Xu S. Y.
收藏  |  浏览/下载：6/0  |  提交时间：2013/03/28

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