航天遥感器辐射定标精度计算方法研究

Research on Calculation Method of Space Remote Sensor's Radiometric Calibration Accuracy

针对航天遥感器进行辐射定标工作的定标精度评估时,并没有形成统一计算方法的问题,文章对工作在不同谱段遥感器的多种辐射定标精度计算方法进行了实例计算与研究。研究结果表明定标精度计算结果一般同具体的定标点选取相关。文章进而提出在比较不同遥感器辐射定标精度时需要明确精度计算的约束条件,这样才能增加精度对比的横向可比性,也能为客观的评价辐射定标工作提供更好的参考。

Currently there is no unified calculation method to estimate space remote sensor＇s radiometric calibration accuracy. The paper makes research on different accuracy calculation methods for a variety of remote sensors which work on different spectral bands. The result shows that the final accuracy is usually related to the calibration points which are chosen for calculating. So the paper gives some advice of specifying the constraint conditions of accuracy calculation to improve the comparability of calibration accuracy among different remote sensors and to providing a better reference for evaluating the radiometric calibration.