Design of Airborne Dual Channel Ultraviolet-Visible Imaging Spectrometer with Large Field of View, Wide Spectrum, and High Resolution
HAO Ai-hua1, 2, 3, HU Bing-liang1, BAI Jia-guang1, LI Li-bo1, 3, YU Tao1, 3, LI Si-yuan1
1. Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China 2. School of Electronic Engineering, Xi’an University of Post and Telecommunications, Xi’an 710121, China 3. University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：The ultraviolet-visible (UV-Vis 200～500 nm) imaging spectrometer is an important part of space remote sensing. Based on special requirements and practical application of the airborne UV-VIS spectrometer, a kind of scanning imaging spectrometer using area array CCD is proposed, which can meet the application requirements of large field of view, wide spectrum and high resolution. It overcomes low spatial resolution of traditional line array CCD scanning imaging spectrometer, and limited field of view of the pushbroom imaging spectrometer. In addition, dual channel was designed to reduce stray light. 400～500 nm band includes two order spectrum for 200～250 nm band, and variation of radiance from earth between the shorter wavelength (<290 nm) and the longer wavelength (>310 nm) is above three orders of magnitude. In the structure design of the system, the imaging spectrometer is composed of a two-mirror concentric telescope and two Czerny-Turner plane grating imaging spectrometers. The whole system doesn’t use any additional optical elements in addition to spherical mirrors. The whole system has the advantage of simple structure, excellent performance, and very good feasibility. The modulation transfer function value of full spectrum and full field of view is above 0.6.
Key words：Large field of view;Wide spectrum;High resolution;Ultraviolet;Imaging spectrometer
郝爱花1, 2, 3, 胡炳樑1, 白加光1, 李立波1, 3, 于 涛1, 3, 李思远1 . 大视场宽谱段高分辨率分波段机载紫外-可见光成像光谱仪设计 [J]. 光谱学与光谱分析, 2013, 33(12): 3432-3436.
HAO Ai-hua1, 2, 3, HU Bing-liang1, BAI Jia-guang1, LI Li-bo1, 3, YU Tao1, 3, LI Si-yuan1 . Design of Airborne Dual Channel Ultraviolet-Visible Imaging Spectrometer with Large Field of View, Wide Spectrum, and High Resolution. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(12): 3432-3436.
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