成像光谱仪的光学系统设计

Optical system design of the imaging spectrometer

成像光谱仪是一种“图谱合一”的光学遥感仪器 ,以获取地球目标的详细光谱景像为目的 ,如陆地、海洋的辐射信息及大气等方面的监测等。成像光谱仪的特点是成像光谱段多、谱段不连续、位置重叠等 ,并同时存在有图像分辨率和光谱分辨率的问题 ,其光学系统是非常复杂的 ,且所要求的光谱分辨率比图像分辨率要高。详细介绍了成像光谱仪的光学系统原理、光学系统设计方法及组成部分。根据现有的技术条件 ,给出了合理的结构和设计结果 。

The imaging spectrometer combining image and spectrum is an optical sensing instrument. It is used to obtain the detail spectrum of the objects on earth for the radial information of the land and ocean, the inspection of atmosphere and so on. The imaging spectrometer is characterized by multiple wavebands, discontinuous wavebands and position overlapping coupled with the problem of image resolution and spectrum resolution, so the optical system of the imaging spectrometer is very complicated and demanded spectrum resolution is higher than imaging resolution. The principle, design method and composition of the optica system are introduced in detail. The reasonable structure and design results based on the existing technology is given, which is novel and practicable.