傅里叶望远术中的相位闭合分析及其仿真

Analysis and Simulation on Phase Closure of Fourier Telescopy

傅里叶望远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傅里叶频谱进行提取,并利用相位闭合技术消除随机相位,最终获取同步轨道目标的高分辨率图像。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,并对整个过程进行了计算机模拟。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,充分验证了傅里望远术的正确性和可行性。

Fourier teleacopy is a kind of active imaging technique which has won great attention for these years. In that technique, fringe patterns is used to extract Fourier components of target object, and random phase shift can be eliminated by phase closure, so that high resolution image of the target at geosynchronous ranges can be reconstructed. This paper deduced the basic theory of Fourier telescopy and gave a simulative study on this imaging technique. It showed the validity and feasibility of Fourier teleseopy by reconstructing the image of two simulative targets.