光学综合孔径目标信息的提取与仿真  

Information Extract and Computer Simulation for Optical Aperture Synthesis Destination

作　　者：范伟军[1] 夏良正[1] 周必方[2] 王海涛[2] 

机构地区：[1]东南大学自动控制系,南京210096 [2]中国科学院国家天文台南京天文光学技术研究所,南京210042

出　　处：《数据采集与处理》2004年第1期56-60,共5页Journal of Data Acquisition and Processing

基　　金：国家 8 63基金资助项目

摘　　要：提出了基于最小二乘法准则提取目标傅里叶信息的方法 ,结合传统的信息提取方法 ,对光学综合孔径目标信息的提取进行了仿真。仿真实验表明 ,相位调制法提取目标信息效果最好 ,但信息提取速度较慢 ;基于最小二乘法准则可同时高速提取观测目标的傅里叶幅度和相位。最后对多孔径综合干涉阵的信息提取进行了研究 ,指出基于条纹图像的频谱性质可成功分离各基线对应的条纹图像 ,从而实现信息的提取 ;基于最小二乘法准则也可实现多孔径综合干涉阵的信息提取。An extract method to the destination of Fourier information based on least-squares method is proposed and computer simulation is carried out. Simulation result confirms that phase-modulate method has the best precision, but the extract speed is a bit slower while the method based on least-squares can very fast do the Fourier modulus and phases. Finally, multiple aperture synthesis array destination information extract is researched. According to interferogram frequency, the interferogram from every baseline can be successfully separated and the destination information can be extracted. The method based on least-squares can extract multiple aperture synthesis array destination information.

关 键 词：光学综合孔径 目标信息 信息提取 仿真 最小二乘法 望远镜 光干涉 

分 类 号：TH743[机械工程—光学工程] TP391.9[机械工程—仪器科学与技术]