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Region weighted wavelet fusion method for partial focusing image 会议论文
2013 4th International Conference on Advances in Materials and Manufacturing, ICAMMP 2013, December 18, 2013 - December 19, 2013, Kunming, China
Wu D.; Dai L.; Bai X. W.; Wang Z. Q.; Zhang Y. Y.
收藏  |  浏览/下载：11/0  |  提交时间：2015/04/27
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：17/0  |  提交时间：2015/04/27
Controlling the fluorescent properties of aqueous CdTe nanocrystals by modulating the growth rate 会议论文
25650 North Lewis Way, Stevenson Ranch, California, 91381-1439, United States
Zeng Q.; Zhang Y.; Xue B.; Liu K.; An L.; Tu L.; Liu X.; Kong X.
收藏  |  浏览/下载：8/0  |  提交时间：2014/05/15
Mechanism Design of Continuous infrared Lens 会议论文
Conference Location, 2013
Su Y. Q.; Zhang J. X.; Lv T. Y.; Yang F.; Wang F. G.
收藏  |  浏览/下载：18/0  |  提交时间：2014/05/22
Wavefront Error Sensing based on Phase Diversity Technology and Image Restoration 会议论文
2012
Cheng Q.; Li F. Z.; Tao X. P.; Yan F.; Zhang X. J.
收藏  |  浏览/下载：7/0  |  提交时间：2013/03/28
Design and fabrication of imaging optical systems with freeform surfaces (EI CONFERENCE) 会议论文
Current Developments in Lens Design and Optical Engineering XIII, August 13, 2012 - August 15, 2012, San Diego, CA, United states
Zhang X.; Zheng L.; He X.; Wang L.; Zhang F.; Yu S.; Shi G.; Zhang B.; Liu Q.; Wang T.
收藏  |  浏览/下载：29/0  |  提交时间：2013/03/25
Research on Identification of Moving Targets in Space 会议论文
2012
Xu T. Q.; Zhang G. X.; Xu W.; Jin G.
收藏  |  浏览/下载：5/0  |  提交时间：2013/03/28
Research of VGA Display for 2048 Resolution Power Linear CCD Based on SOPC 会议论文
2011
Zhang Y. X.; Ge W. Q.; Xu Z. P.; Li D. N.; Liu Y.; Leng X.; Chen X. H.
收藏  |  浏览/下载：28/0  |  提交时间：2013/03/28
Distribution of gyroscope accuracy parameters for E-O stabilization platform (EI CONFERENCE) 会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Jiang H.; Jia H.; Wei Q.; Zhang X.
收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25
E-O stabilization platform performance is partly decided by gyroscope precision  so it is important to choose a gyroscope with proper accuracy for an E-O stabilization platform. Based on the method of using a gyroscope in practice  gyroscope error model is established. With the gyroscope error model gyroscope accuracy parameters  that is bias repeatability  bias stability  scale factor  scale factor nonlinearity  output noise and bandwidth  are separately analyzed. According to the concretely required performance indices for an E-O platform  means of distribution of gyroscope accuracy parameters is proposed. A MEMS gyroscope is tested to get the parameters. Bias stability of the gyroscope is 0.08 /s while the bandwidth is 60 Hz. Output noise both at zero input and at nonzero input is analyzed by means of PSD to get the result that nonzero output noise is higher than zero output noise. Frequency response result of the gyroscope is dealt by means of correlation analysis. With all the tested result and the method of distribution of gyroscope accuracy parameters  it is clear that how the gyroscope errors works in an E-O servo system. The principle of distribution of gyroscope accuracy parameters is helpful for choosing appropriate gyroscope for an E-O platform. 2011 IEEE.  
Effect of gimbal point displacement on optical axis pointing precision in an image seeker (EI CONFERENCE) 会议论文
2011 International Conference on Electric Information and Control Engineering, ICEICE 2011, April 15, 2011 - April 17, 2011, Wuhan, China
Zhang X.; Jiang Z.; Wei Q.; Jia H.
收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25
A concentric glass spherical dome was usually chosen as the transparent window mounted in front of the optical lens in an image seeker. However  optical ray had to change its direction when propagating through the dome due to refraction unless passing through the center of the dome  which demanded gimbal point coincide with the center of the dome exactly. In fact  gimbal point displacement could not be eliminating due to fabrication  assembly and vibration  therefore the optical axis pointing error generated. In this paper  the effect of gimbal point displacement on optical axis pointing precision in an image seeker was analyzed  and the theoretical expression of the optical axis pointing error was derived based on geometric optics  and the error dynamics was explored by numerical. Take a visible light image seeker as a case  the thickness of concentric glass spherical dome was 8mm and the inner radius was 72mm  and the optical axis pointing errors varying dynamically with the look angle and the gimbal point displacement were shown in graph. When the gimbal displacement was 0.11mm  the maximum optical axis pointing error was 0.054mrad that is equal to the instantaneous field of view (IFOV) corresponding to the camera system whose focal length was 120mm and pixel size was 6.5m. Furthermore  with the gimbal displacement increasing  the optical axis pointing error increased linearly. The analyzed results provided a theoretical basis for the displacement range  which had to be limited strictly in the gimbal design process. 2011 IEEE.  

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