像面干涉成像光谱技术中的复原方法  

Recovery algorithm of image plane interference imaging spectrometer

作　　者：孟鑫[1] 李建欣[1] 李苏宁[2] 朱日宏[1] 

机构地区：[1]南京理工大学电子工程与光电技术学院,江苏南京210094 [2]中国电子科技集团第28研究所,江苏南京210094

出　　处：《红外与激光工程》2013年第8期2238-2243,共6页Infrared and Laser Engineering

基　　金：国家自然科学基金(61205016、U1231112);教育部博士点基金(20123219120021);中国科学院天文光学技术重点实验室开放课题基金

摘　　要：与传统的干涉成像光谱技术相比,像面干涉成像光谱技术具有高光通量、高光谱分辨率、高目标分辨率等优点。在介绍像面干涉成像光谱技术的基本原理基础上,提出了通过推扫横向剪切分束器对目标进行探测的方法,省去了传统推扫方法中提取物点干涉信息时的图像配准过程。研究了信息处理中去直流项、切趾等预处理问题,分析了相位误差校正方法及各种方法的优缺点。搭建Sagnac型像面干涉成像光谱实验装置进行了光谱重构实验,复原了被测光源的光谱曲线,并复原了探测目标在各个谱段的光谱图像。A series of interferometric images were acquired by pushbroom in the image plane interferometric hyperspectral technology, where the fringe pattern of every point was extracted and the spectrum was reconstructed by Fourier transform. Compared with the traditional interference imaging spectrometer, it had the advantages of high flux, high spectral resolution, high target resolution and so on. The basic principle of imaging plane interference spectrometer was introduced and a new push-broom method was presented. The petreatment such as apodization and DC removal are researched. Then the phase error correction methods were discussed, so as their advantages and disadvantages. A Sagnac image plane interference spectrometer was set up, and the spectral curve of the measured light was got.

关 键 词：光谱学 高光谱成像 像面干涉 

分 类 号：O433[机械工程—光学工程]