Analysis and testing on imaging-performance stability of TMA space camera at various states

Zhang Xingxiang; Ren Jianyue

Stability of wavefront aberration (WFA) has great impacts on imaging quality of space camera, which is a major performance index for those. With regard to possible gravity orientation and temperature range of space camera in manufacture and orbit, the mirror's tolerances and profile errors were calculated through FEA, and WFA was calculated by optical software using those. By simulating multi-orientation gravity states and adjusting environment temperature 204 in laboratory, WFA of the space camera was measured and tested, the average result changed from /14.7 to /12.4 at all states, the worst was /11 for single field. The testing data was nearly in accord with the calculate value, the mean range were -0.012 6 -0.003 1, the max difference error was -0.023. Moreover, the MTF to was tested validate the system stability, the result achieved 0.21, there were only 4.8% errors at choosing states. The method can be used to inspect and confirm the imaging performance stability, which has been used in wide-field TMA space camera, guiding design and finding week point, through analysis and testing, the data well illustrated the performance stability at all states.

1. Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033

Received Date: 2014-01-11

Rev Recd Date: 2014-02-16

Publish Date: 2014-09-25

Key words:

Abstract: Stability of wavefront aberration (WFA) has great impacts on imaging quality of space camera, which is a major performance index for those. With regard to possible gravity orientation and temperature range of space camera in manufacture and orbit, the mirror's tolerances and profile errors were calculated through FEA, and WFA was calculated by optical software using those. By simulating multi-orientation gravity states and adjusting environment temperature 204 in laboratory, WFA of the space camera was measured and tested, the average result changed from /14.7 to /12.4 at all states, the worst was /11 for single field. The testing data was nearly in accord with the calculate value, the mean range were -0.012 6 -0.003 1, the max difference error was -0.023. Moreover, the MTF to was tested validate the system stability, the result achieved 0.21, there were only 4.8% errors at choosing states. The method can be used to inspect and confirm the imaging performance stability, which has been used in wide-field TMA space camera, guiding design and finding week point, through analysis and testing, the data well illustrated the performance stability at all states.

HTML

Reference (27)

[1]
[2]	Zhang Liang, An Yuan, Jin Guang. Optical design of theuncoaxial three-mirror system with wide field of view andlong focal length[J]. Infrared and Laser Engineering, 2007,36(2): 278-280. (in Chinese)张亮, 安源, 金光. 大视场、长焦距离轴三反射镜光学系统设计[J]. 红外与激光工程, 2007, 36(2): 278-280.
[3]
[4]	Song Yanfeng, Shao Xiaopeng, Xu Jun. Off-axis three-mirrorreflective optical system[J]. Infrared and Laser Engineering,2008, 37(4): 706-709. (in Chinese)宋岩峰, 邵晓鹏, 徐军. 离轴三反射镜光学系统研究[J]．红外与激光工程, 2008, 37(4): 706-709.
[5]
[6]	Ding Yanwei, Liu Jian, Lu E. Effect of space environmenton the dimension stability [J]. Optics and PrecisionEngineering, 2002, 10(1): 106-107. (in Chinese)丁延卫, 刘剑, 卢锷. 空间环境对光学成像遥感器尺寸稳定性的影响[J]. 光学精密工程, 2002, 10(1): 106-107.
[7]	Hearn D R. Earth obsreving-1 advanced land imager:detectorline-of-sight calibration [R]. Lincoln Laboratory, 2002: 37-39.
[8]
[9]
[10]	Bret-Dibat T, Albouys V, Berthon J, et al. Tests of a highresolution three mirrors anastigmat telescope[C]//SPIE, 1999,3780: 130-131.
[11]
[12]	John W Figoski. The QuickBird telescope:the reality of large,high-quality, commercial space optics[C]//SPIE, 1999, 3779:22-27.
[13]	Liu Lei, Li Jinglin, Lv Qingtao. Research on adjustingdevice of large aperture reflective optics system [J]. Opticsand Precision Engineering, 2005, 13(21): 134-137. (in Chinese)刘磊, 李景林, 吕清涛. 大口径反射光学系统装调装置设计研究[J]. 光学精密工程, 2005, 13(21): 134-137.
[14]
[15]
[16]	Yang Xiaofei, Han Changyuan. Study on decision ofalignment priority using mirror tolerance in a three off-axisopticalsystem[J]. Optical Technique, 2004, 31(2): 173-175.(in Chinese)杨晓飞, 韩昌元. 利用离轴三反光学系统确定各镜的装调公差[J]. 光学技术, 2005, 31(2): 173-175.
[17]	Dietrich Korsch, Huntsville, Alabama. Reflective Optics [M].USA: Academic Press, 1991: 98-100, 212-216.
[18]
[19]	Yan Yong, Jin Guang, Yang Hongbo. Lightweight structuraldesign of space mirror [J]. Infrared and Laser Engineering,2008, 37(1): 97-101. (in Chinese)闫勇, 金光, 杨洪波. 空间反射镜结构轻量化设计[J]. 红外与激光工程, 2008, 37(1): 97-101.
[20]
[21]
[22]	Sha Wei, Zhang Xingxiang, Chen Changzheng, et al.Application of zero clearance support method based on circlemirrors[J]. Optics and Precision Engineering, 2010, 18(10):2200-2202. (in Chinese)沙巍, 张星祥, 陈长征, 等. 圆形反射镜无隙支撑方法的应用[J]. 光学精密工程, 2010, 18(10): 2200-2202.
[23]
[24]	Leigh D, Freimand D. Computer aided optical system withCODE V[C]//SPIE, 1988, 1038: 288-294.
[25]
[26]	Han Changyuan. Image Quality Evaluating and Testing ofOptical System[M]. Changchun: CIOMP, 2009. (in Chinese)韩昌元. 光学系统成像质量评价及测试[M]. 长春: 中国科学院长春光学精密机械与物理研究所, 2009.
[27]	Zhang Xiaohui, Han Changyuan, Pan Yulong, et al.Evaluation of general image quality of transfer optical remotesensing CCDcamera [J]. Infrared and Laser Engineering,2008, 31(4): 697-701. (in Chinese)张晓辉, 韩昌元, 潘玉龙, 等. 传输型CCD 相机综合像值评价方法的研究[J]. 红外与激光工程, 2008, 31(4): 697-701.

Analysis and testing on imaging-performance stability of TMA space camera at various states

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Article Metrics

Related

Proportional views