基于CDP的宽波段光谱成像仪研究

Research on Broadband Spectral Imaging Spectrometer Based on CDP

为满足动态目标实时光谱成像的应用需求,设计了一种基于CDP（crossed dispersionprism）的静态、快照式的光谱成像仪。对其光谱成像原理进行了理论研究,并根据理论研究结果对宽波段CDP光谱成像仪光学系统进行设计。该光谱成像仪由XDP分光系统、成像光学系统和面阵探测器组成,视场角为4°,焦距为110 mm,工作波段为0.6～5.0μm。设计结果表明,该仪器在0.6～5.0μm的波段范围内具有较好的光谱成像能力,平均光谱分辨率为20 nm。该技术为实时获取动态目标光谱信息及位置信息提供了一种新方法,同时该技术在对未知高能目标探测、定位以及识别方面具有很大的潜力。

In order to satisfy the application requirements of real-time spectral imaging for moving targets ,we design a static , snapshot imaging spectrometer based on a CDP（crossed dispersion prism） .The spectral imaging principle is studied ,and an op-tical system of broadband spectral imaging spectrometer is designed according to this principle .Imaging spectrometer consists of a CDP ,an imaging lens and a detector ,with ± 2°field of view ,spectral coverage from 0.6 to 5.0μm ,The results show that this instrument has a better ability to detect spectral from 0.6 to 5.0μm while the average spectral resolution is 20 nm .The technol-ogy for dynamic target real-time spectral imaging provides a new technical way .It has a great potential for detecting ,locating and identifying unknow n energetic events in real-time .