静止轨道遥感仪器可见光通道月球定标方法研究

量子电子学报

静止轨道遥感仪器可见光通道月球定标方法研究

牛明慧1, 2，陈福春1*，陈桂林1

（1中国科学院上海技术物理研究所，中国科学院红外探测与成像技术重点实验室，上海 200083； 2中国科学院大学，北京 100049）

出版日期:2019-01-28 发布日期:2019-01-17
通讯作者: fuchun.chen@mail.sitp.ac.cn.
作者简介:牛明慧（1984-），女，河南驻马店人，博士研究生，主要从事遥感仪器月球定标方面的研究。E-mail：niu_minghuidr@163.com.

Study on Lunar Calibration for Visible Channel of Geostationary Remote Sensing Radiometer

Niu Minghui1,2, Chen Fuchun1*, Chen Guilin1

（1 CAS Key Laboratory of Infrared System Detection and Imaging Technology, Shanghai Institute of Technical Physics, Shanghai 200083, China; 2 University of Chinese Academy of Sciences, Beijing 100049, China）

Published:2019-01-28 Online:2019-01-17

摘要/Abstract

摘要： 介绍了一种以月球为在轨定标参考源的对静止轨道卫星辐射计可见光通道进行辐射定标的方法。以风云二号E星为研究范例，搜集选取地球圆盘业务图中出现的月球图像，以月球圆盘积分辐照度为考察对象，进行图像过采样修正、日月距离修正、星月距离修正和月相角修正等归一化数据处理，以序列的时间变化率评估风云二号E星辐射计可见光通道的长期响应衰减情况。结果表明，风云二号E星辐射计可见光通道的年衰减率约为2.17%，与其他定标方法的结果基本一致。借助月球定标技术能很好地实现对静止轨道卫星辐射计可见光通道的长期响应衰减的评估，为订正辐射计的辐射定标的系统性偏差提供了参考。

关键词: 遥感, 辐射定标, 月球定标, 静止轨道卫星, 可见光通道

Abstract: A radiometric calibration method is introduced by using the Moon as on-orbit calibration reference for the visible channel of geostationary remote sensing radiometer. Lunar images in FY-2E’s operational frames were collected and selected. Lunar disk-integrated irradiances were calculated for data processing. The main procedures of data processing include lunar image over-sampling correction, distance correction, and lunar phase correction. The long-term response attenuation of the visible channel of FY-2E’s radiometer was evaluated by the time trend of the sequence. The result shows that the annual attenuation rate of the visible channel of FY-2E’s radiometer is about 2.17%, which is consistent with the results of other calibration methods. The long-term response attenuation of geostationary remote sensing radiometer visible channel is well assessed by using the lunar calibration technique, providing reference for the systematic correction of the radiometric calibration of the radiometer.

Key words: remote sensing, radiometric calibration, lunar calibration, geostationary satellite, visible channel

牛明慧1, 2，陈福春1*，陈桂林1. 静止轨道遥感仪器可见光通道月球定标方法研究[J]. 量子电子学报.

Niu Minghui1,2, Chen Fuchun1*, Chen Guilin1. Study on Lunar Calibration for Visible Channel of Geostationary Remote Sensing Radiometer[J]. Chinese Journal of Quantum Electronics.

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