光电工程, 2011, 38 (11): 40, 网络出版: 2011-11-18
傅里叶望远术的实验室验证系统
Imaging Verification System of Fourier Telescopy in Laboratory
傅里叶望远术 高分辨率成像 相位闭合 图像重构 Fourier telescope high-resolution imaging phase closure image reconstruction
摘要
本文介绍了傅里叶望远术成像的基本原理,为验证傅里叶望远术成像原理,在实验室中搭建了四光束的傅里叶望远术验证成像系统,对灰度透射式目标进行成像验证,利用 LabVIEW软件完成了实验中相关控制软件、检测软件和信号处理软件程序设计。通过形成不同空间频率的干涉条纹提取目标的频谱值,利用相位闭合技术,消除与图像无关的相位因子,提取目标图像的一维和二维频谱图进行图像重构,得到了目标的重构图像,最后分析了影响成像质量的因素。
Abstract
The imaging fundamental principle of Fourier telescopy is introduced. In order to verify the validity of the technology, an imaging verification system of four beams had been completed in laboratory. The control, detection and signal processing software were designed based on LabVIEW. Two-dimensional spectra of objection were extracted by straight line fringe. With the phase closure technology, the phase factor being independent of image is eliminated and the reconstruction images of the object were obtained. Finally, the factors affecting the imaging quality are analyzed.
董洪舟, 吴健, 刘艺, 张炎. 傅里叶望远术的实验室验证系统[J]. 光电工程, 2011, 38(11): 40. DONG Hong-zhou, WU Jian, LIU Yi, ZHANG Yan. Imaging Verification System of Fourier Telescopy in Laboratory[J]. Opto-Electronic Engineering, 2011, 38(11): 40.