风云三号微波湿度计航空校飞辐射定标原理及数据分析  

The Principle and Data Analysis of Radiometric Calibration for Aeria-test of FY-3/MWHS

作　　者：谷松岩[1] 王振占 卢乃锰[1] 杨忠东[1] 李靖 张升伟 杨磊[1] 吴雪宝[1] Gu Songyan;Wang Zhenzhan;Lu Naimeng;Yang Zhongdong;Li Jing;ZhangShengwei;Yang Lei;Wu Xuebao(National Satellite Meteorological Center,China Meteorological Administration,Beijing 100081,China;National Space Science Center,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国气象局中国遥感卫星辐射测量和定标重点开放实验室国家卫星气象中心,北京100081 [2]中国科学院国家空间科学中心,北京100190

出　　处：《遥感技术与应用》2019年第6期1205-1211,共7页Remote Sensing Technology and Application

基　　金：国家重点研发计划(2018YFB0504900/2018YFB0504902);国家自然科学基金项目(41201360、41775020)资助

摘　　要：风云三号微波湿度计是我国首次在轨定量应用于大气探测的星载被动微波辐射计,为验证载荷辐射性能,发射前于2007年9月至11月开展了航空校飞试验,历时2个月共转场青海湖、敦煌和云南普洱3个试验场,地面同步实施了辐射校正测量。在阐述星载微波大气探测载荷航空校飞辐射定标原理基础上,开展航空校飞数据分析,并与同步辐射校正测量结果进行了比对验证,结果表明风云三号微波湿度计初样产品探测结果符合设计指标要求。风云三号微波湿度计航空校飞试验为其资料在轨业务定量应用奠定了基础,其中航空校飞辐射定标模型支撑了后续风云三号卫星微波湿度计在轨业务定标。FY-3 is Chinese second-generation sun-synchronous meteorological satellite series.The Microwave Humidity Sounder(MWHS)is a five-channel microwave radiometer in the range of 150~191 GHz onboard FY-3 satellite for atmosphere humidity sounding.To verify the load radiation performance,an aeria-test has been finished during Sep.and Nov.2007 before launching,transferring around Qinghai,Dunhuang,and Puer.In this paper,the principle of airborne radiometric calibration for MWHS has been explained,the aeria-test cali⁃bration data has been analyzed,and the results has been compared with the synchrotron radiation correction mea⁃surement results.According the outcome,we consider the FY-3/MWHS is good enough to meet the require⁃ments of design specifications.The aeria-test results make a firm foundation for MWHS’s operational applica⁃tion,and the model of airborne radiometric calibration for MWHS supported the operational preprocessing fol⁃low-up.

关 键 词：风云三号 微波湿度计 航空校飞 辐射定标 

分 类 号：P407.1[天文地球—大气科学及气象学] TP75[自动化与计算机技术—检测技术与自动化装置]