相位平移误差与子孔径自身像差对稀疏光学合成孔径系统成像质量的综合影响分析

刘政; 王胜千; 黄林海; 饶长辉

doi:10.7498/aps.60.100702

摘要

稀疏光学合成孔径系统成像质量的提高需要综合考虑子孔径间相位平移误差和子孔径自身像差的影响.本文基于稀疏光学合成孔径系统的光瞳结构,利用傅里叶光学基本原理对系统的斯特列尔比(Strehl Ratio,SR)进行了理论推导,得到了包含相位平移误差和子孔径自身像差分离形式的该类系统的SR指标的理论公式.以两子孔径系统为例,计算并分析了在相位平移误差校正后和未校正时,系统SR指标在不同子孔径像差下的变化规律,研究了相位平移误差与子孔径像差对系统SR指标的综合影响.结果阐明了该类系统的成像质量受相位平移误差和子孔径自身像差双重制约的物理机理,且表明只有将子孔径自身像差校正至某限度内时,相位平移误差的校正才对系统SR指标的提高有明显意义.

关键词:

Abstract

To improve the image quality of sparse-optical-synthetic-aperture system, the effects of sub-aperture self aberrations and piston errors among different sub-apertures should be considered comprehensively. Based on the pupil of sparse-optical-synthetic-aperture system, the system Strehl Ratio (SR) is deduced using the principle of Fourier optics, which leads to the theoretical result of the systems SR metric with the form of separated sub-aperture aberration and piston error. As for the bi-aperture system, the variances of the system SR metric are calculated and analyzed with different sub-apertures aberrations for conditions of corrected piston error and un-corrected piston error. Therefore, the comprehensive effects of sub-aperture aberrations and the piston errors among different sub-apertures on the system image quality are analyzed theoretically. From these analyses, the physical mechanism for the comprehensive effect of sub-aperture aberration and the piston error on the sparse-optical-synthetic-aperture system image quality is revealed, and it could be seen that the compensation of piston error is meaningful only if the sub-aperture self aberration is corrected to be in a certain limit.

Keywords:

作者及机构信息

1.
国防科技大学光电科学与工程学院,长沙 410073;

2.
中国科学院光电技术研究所自适应光学实验室,成都 610209;

3.
中国科学院自适应光学重点实验室,成都 610209

基金项目: 国家自然科学基金青年科学基金(批准号:61008038)资助的课题.

Authors and contacts

1.
College of Opto-Electronics Science and Engineering, National University of Defense Technology, Changsha 410073, China;

2.
The Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China;

3.
The Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China

参考文献

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施引文献

[1]	Meinel A B 1970 Appl. Opt. 9 2501
[2]
[3]	Davide Loreggia, Daniele Gardiol, Mario Gai 2004 Appl. Opt. 43 721
[4]
[5]	Miller N J, Dierking M P, Duncan B D 2007 Appl. Opt. 46 5933
[6]	Harvey J E, Ftaclas C 1990 Proc. SPIE 1236 390
[7]
[8]	Mahajan V N 1982 J. Opt. Soc. Am. A 72 1258
[9]
[10]	Mahajan V N 1982 J. Opt. Soc. Am. A 73 860
[11]
[12]
[13]	Butts R R 1981 Proc. SPIE 293 85
[14]
[15]	Shack R V 1978 J. Opt. Soc. Am. A 68 1361
[16]
[17]	Lucke R L 1999 Appl. Opt. 38 4776
[18]	Thompson K 2005 J. Opt. Soc. Am. A 22 1389
[19]
[20]
[21]	Shu K, Eisenberg S 1986 Proc. SPIE 628 66
[22]
[23]	Stuhlinger T W 1990 Proc. SPIE 1354 38
[24]
[25]	Sasia'n J M 1994 Opt. Eng. 33 2045
[26]
[27]	Wang F, Zhu Q H, Jiang D B, Zhang Q Q, Deng W, Jing F 2006 Acta Phys. Sin. 55 10 (in Chinese) [王方、朱启华、蒋东镔、张清泉、邓武、景峰 2006 55 10]
[28]
[29]	Lin Z L 2007 Acta Phys. Sin. 56 10 (in Chinese)[林志立 2007 56 10]
[30]
[31]	Jiang X G, Wu F Y 2008 Acta Phys. Sin. 57 4202 (in Chinese) [江新光、吴逢轶 2008 57 4202]
[32]
[33]	Zhang Y J, Zhuang Y Y 2009 Chin. Phys. B 18 2788
[34]	Yue J Y, Liu H, Lu Z W, Xu W B, Zhang H, Zhang H X, Liu Y 2010 Chin. Phys. B 19
[35]
[36]
[37]	Bai F Z, Rao C H 2010 Acta Phys. Sin. 59 4056 (in Chinese) [白福忠、饶长辉 2010 59 〖20] Wang Q S, Rao C H, Jiang W H 2008 Journal of Modern Optics 55 1771
[38]
[39]	Watson S M, Mills J P, Rogers S K 1988 J. Opt. Soc. Am 5 893
[40]
[41]
[42]	Born M, Wolf E 1957 Principles Of Optics-Electromagnetic Theory of Propagation, Interference and Diffraction of Light(5th edition) (Pergamon Press) 517520
[43]
[44]	Goodman J R 1968 Introduction to Fourier Optics (McGraw-Hill Press) 3640
[45]	Ye Q X, Shen Y H 2006 Practical Mathematic Manual(2nd edition) (Science Press) 276-277(in Chinese) [叶其孝, 沈永欢等编 2006 实用数学手册(第二版)(科学出版社) 276277]
[46]
[47]	John W Hardy 1998 Adaptive Optics for Astronomical Telescopes (Oxford University Press) 100115

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