太赫兹科学与电子信息学报2016，Vol.14Issue(6)：843-847,5.DOI:10.11805/TKYDA201606.0843
星载辐射计接收定标系统灵敏度测试与分析
Measurement and analysis on sensitivity of receiving and calibration system of space-borne microwave radiometer
姜丽菲 1乔洋 1王芸 1孙彦龙 1姚崇斌1
作者信息
- 1. 上海航天电子技术研究所,上海 201109
- 折叠
摘要
Abstract
Sensitivity is an important index to judge the performance of receiving and calibration system,which would affect the image quality of space-borne microwave radiometer directly. In order to verify whether the space-borne radiometers meet the requirements of observation or not, hot and cold calibration methods are adopted to test the receiving and calibration system sensitivity; the factors affecting sensitivity of receiving and calibration system and the measurement accuracy are analyzed. The results prove that the sensitivity of receiving and calibration system is better than 0.86K,and the accuracy is higher than 0.1K for F frequency. The system sensitivity can be improved by optimizing the design of quasi-optical feed network and minimizing channel insertion loss.关键词
星载微波辐射计/灵敏度/两点定标Key words
space-borne microwave radiometer/sensitivity/two-point calibration分类
信息技术与安全科学引用本文复制引用
姜丽菲,乔洋,王芸,孙彦龙,姚崇斌..星载辐射计接收定标系统灵敏度测试与分析[J].太赫兹科学与电子信息学报,2016,14(6):843-847,5.
