高分六号卫星的交叉辐射定标研究  

CROSS RADIATION CALIBRATION OF GF6 SATELLITE

作　　者：纪睿 谢勇 余涛[3] 陈雪薇 邵雯 Ji Rui;Xie Yong;Yu Tao;Chen Xuewei;Shao Wen(School of Geography&Science,Nanjing University of Information Science and Technology,Nanjing 210044,Jiangsu,China;Nanjing Research Center,National Engineering Laboratory for Remote Sensing Satellite Applications,Nanjing 210044,Jiangsu,China;Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China;School of Electronic&Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,Jiangsu,China)

机构地区：[1]南京信息工程大学地理科学学院,江苏南京210044 [2]遥感卫星应用国家工程实验室南京研究中心,江苏南京210044 [3]中国科学院遥感与数字研究所,北京100101 [4]南京信息工程大学电子与信息学院,江苏南京210044

出　　处：《计算机应用与软件》2022年第10期54-58,146,共6页Computer Applications and Software

基　　金：国家自然科学基金项目(41671345);广西创新驱动发展专项(科技重大专项)(桂科AA18118038);国家重点研发计划项目(2016YFB0502500);南京信息工程大学人才启动基金项目(2243141601074)。

摘　　要：为了能够检测高分六号卫星的辐射性能并准确地计算出高分六号卫星的辐射定标系数,利用高分六号卫星的成像特性,主要针对辐射定标区域和卫星自身成像特性对交叉辐射定标方法进行了优化,从而计算得到了高分六号卫星的增益和偏移。结果表明多场地交叉辐射定标法各场地的不确定度分别为1.94%、1.91%、1.92%、2.77%都在4%以内,远低于单场地交叉辐射定标法得到的不确定度,提高了定标的精度。In order to detect the radiation performance of GF6 satellite and accurately calculate the radiation calibration coefficient of GF6 satellite,this paper used the imaging characteristics of GF6 satellite to optimize the cross-radiation calibration method for radiation calibration area and the satellite’s own imaging characteristics.And the gain and offset of GF6 satellite were calculated.The results show that the uncertainty of each site of the multi-site cross-radiation calibration method is 1.94%,1.91%,1.92%,and 2.77%,and the uncertainty is within 4%,which is much lower than the uncertainty obtained by single-site cross-radiation calibration method,and it improves the accuracy of calibration.

关 键 词：高分六号卫星 几何校正 交叉定标法 不确定度 多场地 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] TP79