遥感相机实验室静态MTF测量误差分析
|
摘要
应用于航空航天等军工技术领域的高分辨率遥感相机在轨图像处理过程中,需要用到相机实验室静态MTF测量结果进行补偿复原,因此对其测量的准确性提出了较高的要求。针对目前遥感相机实验室静态MTF测量常用的固有频率目标法,进行了各相关误差源的深入量化分析,并结合某航天遥感相机的MTF测量计算出各误差源的影响程度,其中系统总误差和随机总误差分别为0.021 32和0.003 04,最后给出了提高测量精度的建议。在实际工程中,可根据测量条件估算出误差值,并对影响较严重的误差因素采取相应措施,从而提高测量的准确性,对遥感相机在轨图像处理有指导意义。
In the technology of aeronautics and astronautics,the high resolution remote sensors in the on-orbit image processing need to use the static MTF measurement results in laboratory to compensate for recovery,so it puts forward higher requirements for the accuracy of the static MTF measurement.Aiming at the natural frequency target method,which is the most common method of static MTF measurement for remote sensor in laboratory at present,the quantitative analyses of the related error sources are carried out.According to the MTF measurement of a space remote sensor,the influence degree of each error source is calculated.The total system errors and total random errors are 0.021 32 and 0.003 04.At last,the suggestions on improving measurement accuracy are given.In practical engineering,the errors can be estimated according to the conditions and parameters,and some effective measures are taken to reduce the impacts of the serious errors.It has important guiding significance for the on-orbit image processing of remote sensors.
In the technology of aeronautics and astronautics,the high resolution remote sensors in the on-orbit image processing need to use the static MTF measurement results in laboratory to compensate for recovery,so it puts forward higher requirements for the accuracy of the static MTF measurement.Aiming at the natural frequency target method,which is the most common method of static MTF measurement for remote sensor in laboratory at present,the quantitative analyses of the related error sources are carried out.According to the MTF measurement of a space remote sensor,the influence degree of each error source is calculated.The total system errors and total random errors are 0.021 32 and 0.003 04.At last,the suggestions on improving measurement accuracy are given.In practical engineering,the errors can be estimated according to the conditions and parameters,and some effective measures are taken to reduce the impacts of the serious errors.It has important guiding significance for the on-orbit image processing of remote sensors.
引文
[1]张新,付强.空间光学系统技术发展探讨[J].航天返回与遥感,2011,32(5):29-32.ZHANG Xin,FU Qiang.The technological investigation on space optical system development[J].Spacecraft Recovery and Remote Sensing,2011,32(5):29-32.
[2]伏瑞敏,岳丽清.航天光学遥感器光学装调技术现状与展望[J].航天返回与遥感,2011,32(3):30-35.FU Rui-min,YUE Li-qing.Present state and perspectives of alignment technology for space optical remote sensor[J].Spacecraft Recovery and Remote Sensing,2011,32(3):30-35.
[3]岳涛,李博,陈晓丽,等.空间光学发展现状和未来发展[J].航天返回与遥感,2011,32(5):1-9.YUE Tao,LI Bo,CHEN Xiao-li,et al.The current and future development of space optics[J].Spacecraft Recovery and Remote Sensing,2011,32(5):1-9.
[4]王维,董吉洪,孟庆宇.火星探测可见光遥感相机的发展现状与趋势[J].中国光学,2014,7(2):208-214.WANG Wei,DONG Ji-hong,MENG Qing-yu.Current status and developing tendency of visible spectral remote sensing camera for mars observation[J].Chinese Optics,2014,7(2):208-214.
[5]乐国庆,郭永飞,刘春香,等.低曝光条件下遥感相机微振动量检测[J].中国光学,2014,7(6):917-924.LE Guo-qing,GUO Yong-fei,LIU Chun-xiang,et al.Micro-vibration detection of remote sensing camera under low exposure condition[J].Chinese Optics,2014,7(6):917-924.
[6]施航,朱志刚.星敏感器星图处理研究[J].光学与光电技术,2014,12(6):58-60.SHI Hang,ZHU Zhi-gang.Image processing of the star sensor[J].Optics&Optoelectronic technology,2014,12(6):58-60.
[7]郑筱晟,何平安,黄培俊.基于刀口法的视频内窥镜调制传递函数测量[J].光学与光电技术,2016,14(3):49-53.ZHENG Xiao-sheng,HE Ping-an,HUANG Pei-jun.Modulation transfer function measurement of video endoscope based on knife-edge method[J].Optics&Optoelectronic Technology,2016,14(3):49-53.
[8]贺小军,张贵祥,郑亮亮,等.高分辨率相机传函测试误差分析[J].红外与激光工程,2014,43(S):89-94.HE Xiao-jun,ZHANG Gui-xiang,ZHENG Liang-liang,et al.Testing error analysis of high resolution camera modulation transfer function[J].Infrared and Laser Engineering,2014,43(S):89-94.
[9]周川杰,吕政欣,产晓冰,等.基于刃边法的星载相机在轨MTF测量精度分析[J].航天返回与遥感,2011,32(1):33-37.ZHOU Chuan-jie,LZheng-xin,CHAN Xiao-bing,et al.Analysis of on-orbit MTF estimation for satellite optical sensors with knife-edge method[J].Spacecraft Recovery and Remote Sensing,2011,32(1):33-37.
[10]马卫红,马臻,贺丽,等.光学传递函数测试及空间频率标定方法[J].西安工业学院学报,2004,24(2):144-147.MA Wei-hong,MA Zhen,HE Li,et al.Influence of spatial frequency calibration on OTF test precision[J].Journal of Xi'an Institute of Technology,2004,24(2):144-147.
[11]杨红,康登魁,姜昌录.紫外光学传递函数测量装置研究[J].应用光学,2013,34(2):284-288.YANG Hong,KANG Deng-kui,JIANG Chang-lu.Study of ultraviolet optical transfer function measurement equipment[J].Journal of Applied Optics,2013,34(2):284-288.
[2]伏瑞敏,岳丽清.航天光学遥感器光学装调技术现状与展望[J].航天返回与遥感,2011,32(3):30-35.FU Rui-min,YUE Li-qing.Present state and perspectives of alignment technology for space optical remote sensor[J].Spacecraft Recovery and Remote Sensing,2011,32(3):30-35.
[3]岳涛,李博,陈晓丽,等.空间光学发展现状和未来发展[J].航天返回与遥感,2011,32(5):1-9.YUE Tao,LI Bo,CHEN Xiao-li,et al.The current and future development of space optics[J].Spacecraft Recovery and Remote Sensing,2011,32(5):1-9.
[4]王维,董吉洪,孟庆宇.火星探测可见光遥感相机的发展现状与趋势[J].中国光学,2014,7(2):208-214.WANG Wei,DONG Ji-hong,MENG Qing-yu.Current status and developing tendency of visible spectral remote sensing camera for mars observation[J].Chinese Optics,2014,7(2):208-214.
[5]乐国庆,郭永飞,刘春香,等.低曝光条件下遥感相机微振动量检测[J].中国光学,2014,7(6):917-924.LE Guo-qing,GUO Yong-fei,LIU Chun-xiang,et al.Micro-vibration detection of remote sensing camera under low exposure condition[J].Chinese Optics,2014,7(6):917-924.
[6]施航,朱志刚.星敏感器星图处理研究[J].光学与光电技术,2014,12(6):58-60.SHI Hang,ZHU Zhi-gang.Image processing of the star sensor[J].Optics&Optoelectronic technology,2014,12(6):58-60.
[7]郑筱晟,何平安,黄培俊.基于刀口法的视频内窥镜调制传递函数测量[J].光学与光电技术,2016,14(3):49-53.ZHENG Xiao-sheng,HE Ping-an,HUANG Pei-jun.Modulation transfer function measurement of video endoscope based on knife-edge method[J].Optics&Optoelectronic Technology,2016,14(3):49-53.
[8]贺小军,张贵祥,郑亮亮,等.高分辨率相机传函测试误差分析[J].红外与激光工程,2014,43(S):89-94.HE Xiao-jun,ZHANG Gui-xiang,ZHENG Liang-liang,et al.Testing error analysis of high resolution camera modulation transfer function[J].Infrared and Laser Engineering,2014,43(S):89-94.
[9]周川杰,吕政欣,产晓冰,等.基于刃边法的星载相机在轨MTF测量精度分析[J].航天返回与遥感,2011,32(1):33-37.ZHOU Chuan-jie,LZheng-xin,CHAN Xiao-bing,et al.Analysis of on-orbit MTF estimation for satellite optical sensors with knife-edge method[J].Spacecraft Recovery and Remote Sensing,2011,32(1):33-37.
[10]马卫红,马臻,贺丽,等.光学传递函数测试及空间频率标定方法[J].西安工业学院学报,2004,24(2):144-147.MA Wei-hong,MA Zhen,HE Li,et al.Influence of spatial frequency calibration on OTF test precision[J].Journal of Xi'an Institute of Technology,2004,24(2):144-147.
[11]杨红,康登魁,姜昌录.紫外光学传递函数测量装置研究[J].应用光学,2013,34(2):284-288.YANG Hong,KANG Deng-kui,JIANG Chang-lu.Study of ultraviolet optical transfer function measurement equipment[J].Journal of Applied Optics,2013,34(2):284-288.