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Measurement of Chiral Molecular Parameters Based on a Combination of Surface Plasmon Resonance and Weak Value Amplification 期刊论文  OAI收割
ACS SENSORS, 2020, 卷号: 5, 期号: 8, 页码: 2398-2407
作者:  
Xu, Liping;  Luo, Lan;  Wu, Hao;  Luo, Zhengchun;  Zhang, Zhiyou
  |  收藏  |  浏览/下载:52/0  |  提交时间:2020/12/01
Crystal Fine Structure and Optical Rotatory Angle Study on Spin Superfluidity of Intermolecular N+H center dot center dot center dot O- Hydrogen Bond Electron Cooper Pairing onto D-, L-, and DL-Valine Optical Lattices 期刊论文  OAI收割
ACTA PHYSICO-CHIMICA SINICA, 2014, 卷号: 30, 期号: 4, 页码: 608-622
作者:  
Wang Wen-Qing;  Zhang Yu-Feng;  Gong Yan
  |  收藏  |  浏览/下载:19/0  |  提交时间:2019/04/09
Computation for polarizer's optimal rotation angle on airborne optical platform 会议论文  OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011 - Advances in Imaging Detectors and Applications, Beijing, China, May 24-26, 2011
作者:  
Feng B(冯斌);  Shi ZL(史泽林);  Ding QH(丁庆海);  Yu XR(余新荣)
收藏  |  浏览/下载:42/0  |  提交时间:2012/06/06
Gimbal displacement error analysis on an electro-optical seeker (EI CONFERENCE) 会议论文  OAI收割
Optical Design and Testing IV, October 18, 2010 - October 20, 2010, Beijing, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:35/0  |  提交时间:2013/03/25
It is essential to analyze the gimbal displacement errors for a seeker due to the importance for cueing of targets and tracking for the final approach. Otherwise  for a seeker electro-driven with a concentric glass dome  the large errors will decrease the picking  pointing  and tracking precision rooted from the displacement errors existing between the rotation center of the optical system and the gimbal. And the gimbaled camera system displacement errors are never eliminated but reduced due to the geometric errors consists of geometric tolerances of gimbal structure  manufacture  installation and vibration coming from working environment. In this paper  the gimbal displacement errors in an electro-optically stabilized platform resulting from geometric errors and environment errors were analyzed and shown in detail. The mathematical modal of the gimbal displacement errors created based on multi-body dynamics demonstrated the connection between the gimbal displacement errors and the stabilized platform. Taking a visible light image seeker as a case  the diameter is 120mm  and the geometric tolerances came from the values of primary design and the vibration data came from the environmental vibration test on the pitch-yaw seeker  and at the same time  the errors resulting from installation were considered too. Based on calculating  the maximum gimbal displacement error will reach to 0.2mm for pitching angle smaller than 40 and yawing angle smaller than 60. However  the critical parts have been found out according to the probability theory and the reliability analysis successfully used in the paper  and finally  the maximum gimbal displacement error reduced to 0.1mm  which is acceptable corresponding to the picking  pointing and tracking precision for an optical imaging seeker. 2010 Copyright SPIE - The International Society for Optical Engineering.  
Modulation transfer function in seeker camera limits resulting from missile flutter caused by aerodynamic force (EI CONFERENCE) 会议论文  OAI收割
2010 2nd International Conference on Industrial Mechatronics and Automation, ICIMA 2010, May 30, 2010 - May 31, 2010, Wuhan, China
作者:  
Zhang X.;  Zhang X.;  Zhang X.
收藏  |  浏览/下载:27/0  |  提交时间:2013/03/25
The imaging quality of seeker in flight mode has been evaluated through analyzing the effects of missile flutter on optical modulation transfer function (MTF) of the optical system. Firstly the data of transverse vibration has been processed to eliminate the trend term caused by the trajectory  then obtained the displacement with two times trapezoidal integration. For the side rotation  the high frequency noise interference in the data has been filtered by using five-point moving average method. Took this model as the quivering rule between the object and the image  and then analyzed the effects of the transverse vibration and the side rotation on imaging quality through MTF. By calculation  the r.m.s value of the image motion caused by missile transverse vibration is 0.026mm  and the side rotation angle is 0.0044 . Through the establishment of two modulation transfer functions (MTF) of image random vibration and linear vibration  the results show that the image quality had declined  and the effect of transverse vibration on image quality is obvious. Through improving the rigidity of the missile and selection of small focal length optical system and shorten the time of exposure can improve the imaging quality of the seeker. 2010 IEEE.