光学稀疏孔径成像系统子孔径位相误差研究  

Co-Phasing Error Study of the Sub-apertures' for Optical Sparse Aperture System

作　　者：丁驰竹[1] 冯华君[1] 徐之海[1] 雷华[1] 

机构地区：[1]浙江大学现代光学仪器国家重点实验室,杭州310027

出　　处：《光子学报》2009年第5期1158-1162,共5页Acta Photonica Sinica

基　　金：中国高技术研究发展计划(2009AA12Z108)资助

摘　　要：阐明了光学稀疏孔径成像系统的原理,用主峰积分旁瓣比和实际截止空间频率对系统进行评价,并针对稀疏孔径系统常用的Golay6和TriArm6两种结构,进行误差分析和计算机仿真实验.结果表明,在位相差小于0.2波长时,仍可获得较好的成像观测效果;当位相差大于0.3波长时,成像效果较差.The theory of optical sparse aperture imaging system was analyzed. The system imaging quality was evaluated with the peak to integrated sidelobe ratio （PISLR） and the practical cutoff spatial frequency. Then the co-phasing error analysis and computer imaging simulation were done for the Golay6 and TriArm6. The simulation results show that the OPD within 0.2A is tolerable,and when OPD is greater than 0.3λ that will result in obvious degradation.

关 键 词：成像系统 稀疏孔径 位相误差 

分 类 号：TH743[机械工程—光学工程]