干涉图对称处理及其对重建光谱的影响  

Symmetrical processing of interferogram and the impact on reconstructed spectrum

作　　者：楚建军[1] 方俊永[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《光学仪器》2002年第3期8-10,共3页Optical Instruments

摘　　要：由于采用了基于菲涅耳双反射镜的干涉结构 ,使傅里叶变换成像光谱仪获得了从最高截止波数到远红外波段的很大的带宽范围。根据干涉图信号的对称性以及系统的带宽特点 ,对采集到的干涉数据进行了对称性处理 。Because of its all-reflective layout based on the Fresnel double mirror interference system,the newly developed Fourier transform imaging spectrometer has a very large spectral bandwidth ranged from a cut-off wavelength to far infrared.In this paper,according to the signal's symmetry and wide-band characteristics,a simple method that can efficiently weaken the low frequency noise on the reconstructed spectrum is presented.

关 键 词：干涉 傅里叶变换 成像光谱仪 FTIS 

分 类 号：TH74[机械工程—光学工程] O436.1[机械工程—仪器科学与技术]