摘要
相干编码成像技术是近年来受到广泛关注的一项主动成像技术。它利用直线干涉条纹对目标的频谱进行提取,并利用相位闭合技术消除随机相位,最终获取远距离目标的高分辨率图像。文章对傅里叶望远术的基本理论进行了推导,详细阐述了相位闭合实现方法,并对各个过程进行了计算机模拟,使得能在实验条件不太成熟的情况下对它的理论进行实践。仿真实现了对两个目标的频谱扫描并重建了它们的二维灰度图像,充分验证了傅里叶望远术的正确性和可行性。
Interferometric synthetic aperture method is a kind of active imaging technique to which people have been paying great attention for these years. In this method, fringe patterns is used to extract Fourier components of target object, and random phase shift can be eliminated by phase closure, so that high resolu- tion image of the target at geosynchronous ranges can be reconstructed. This paper deduced the basic theo~ of Interferometric synthetic aperture method and gave a simulative study on this imaging technique even though we haven＇t have the ability to apply it to experiment by now. we showed the validity and feasibility of Fourier teleseopy by reconstructing the image of two simulative targets.
出处
《激光杂志》
CAS
CSCD
北大核心
2009年第1期42-43,共2页
Laser Journal
基金
国家自然科学基金(10504043)资助课题
关键词
相干编码成像
主动成像
相位闭合
高分辨率
intefferometric synthetic aperture method
active imageing
phase closure
high resolution
