基于探测器的成象光谱仪绝对辐射定标方法  

Detector Based Radiometric Calibration for Imaging Spectrometer 

作　　者：杨华元[1,2] 崔敦杰[1,2] 任建伟 卜翠英[1,2] 李同保 

机构地区：[1]中国测试技术研究院 [2]中国科学院长春光学精密机械研究所应用光学国家重点实验室

出　　处：《计量学报》1998年第2期123-129,共7页Acta Metrologica Sinica

基　　金：应用光学国家重点实验室资助

摘　　要：用一组窄带滤光片、简易辐亮度计和硅光二极管探测器设计了绝对型光谱辐亮度计。精确测量滤光片的光谱透过函数，计算辐亮度计的视场，标定探测器的绝对光谱响应度，成为绝对光谱辐亮度计，用来标定成象光谱和其它光学遥感器，并与基于光谱辐照度灯进行辐射定标的传统方法进行了比较。结果表明，基于探测器进行辐射定标的方法是一种提高光学遥感器定标精度的途径，而且是佐证其它定标方法可靠性的一种手段。A spectroradiometer is designed and fabricated with a set of narrow band optical filters, simplified radiometer and silicon photodiode. The spectral transmitance functions of the filters are measured precisely, field of view for the radiometer is calculated and absolute spectral responsivity of the detector is calibrated. With the results, the scale of the spectroradiometer is determined and it is used as an absolute spectroradiometer. An imaging spectrometer is calibrated by this radiometer and the results are compared with classical calibration method based on spectral irradiance standard lamp. The results demonstrate that the detector based method is a way of improving radiometric calibration accuracy for optical remote sensors and is a means of proving the reliability of other calibration methods.

关 键 词：遥感器 辐射定标 辐射测量 成象光谱仪 

分 类 号：TH744.1[机械工程—光学工程] TP73[机械工程—仪器科学与技术]