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提出了一种基于实验室定标和均匀景统计的定标方法,并应用于CBERS-02卫星遥感图像相对辐射校正。首先分析宽视场成像仪(Wide Field Imager,WFI)实验室基础定标系数;然后结合均匀景的定标方法,生成一组新的相对辐射定标系数;最后评价WFI图像相对辐射校正的效果。结果表明:文章提出的定标方法有效,可以较好地解决宽幅遥感图像辐射校正问题,同时为遥感卫星相对辐射校正提供了一种新的途径。
A calibration method based on laboratory calibration and uniform landscape statistics is proposed and applied to the relative radiation correction of CBERS-02 satellite remote sensing images. Firstly, the basic calibration coefficients of Wide Field Imager (WFI) laboratory were analyzed. Then, a set of new relative radiation calibration coefficients were generated based on the method of uniform scene calibration. Finally, the effect of WFI image relative to radiation calibration was evaluated . The results show that the calibration method proposed in this paper is effective and can solve the problem of radiation correction in wide-area remote sensing images. At the same time, it provides a new approach for the relative radiation correction of remote sensing satellites.