论文部分内容阅读
针对紫外-可见光波段高光谱成像仪光谱定标装置的设计进行研究,论述了中阶梯光栅的光学原理,根据光谱定标原理,利用中阶梯光栅工作角度大、衍射级次高、光谱分辨率高的优点,建立了基于中阶梯光栅的光谱定标装置,提出了基于中阶梯光栅的光谱成像仪光谱定标装置的设计方法。以大气探测卫星Aura上所搭载的臭氧观测仪为例论述了光谱定标装置的设计过程,仿真分析了光谱定标装置带宽对光谱定标精度的影响,给出了衍射级次、光谱分辨率、平行光管焦距等光谱定标装置主要性能参数的设计计算方法,为基于中阶梯光栅的光谱成像仪光谱定标装置的设计提供了依据。
Based on the principle of spectral calibration, the use of middle-angle grating with large working angle, high diffraction order and high spectral resolution , A spectral calibration device based on the middle-stepped grating is established, and a design method of the spectral calibration device for the spectral imager based on the middle-stepped grating is proposed. Taking the ozone observer installed on Aura as an example, the design process of spectrum calibration device is discussed. The influence of bandwidth of spectral calibration device on spectral calibration accuracy is analyzed. The diffraction orders, spectral resolution , Collimator focal length and other spectral calibration device design and calculation of the main performance parameters of the spectral ladder for the spectrometer spectral calibration device provides the basis for the design.