中国科学院大学学报2018，Vol.35Issue(1)：42-49,8.DOI:10.7523/j.issn.2095-6134.2018.01.006
有云大气对AMSR-E传感器各通道微波信号影响的分析
Effects of cloudy atmosphere on microwave signals in channels of AMSR-E
摘要
Abstract
Passive microwave remote sensing has the ability to obtain surface radiation information through clouds,fog,rain,and snow.Therefore,in cloudy weather,it is obviously better than thermal infrared remote sensing in land surface temperature retrieval.However,the clouds and the atmospheric molecules affect the microwave signals to some extent.The effects of cloudy atmosphere on microwave signals in the advanced microwave scanning radiometer-earth observing system (AMSR-E) channels were studied by the way of combining theoretical analysis and model simulation.Results show that the effects can be ignored in 6.925 and 10.65 GHz channels,but cannot be ignored in 18.7,23.8,36.5,and 89 GHz channels.The effects in the last four channels can be expressed as functions of precipitable water vapor and cloud liquid water.Based on the above study and further analysis,three channels,18.7,23.8,and 36.5 GHz,are selected to build a land surface temperature inversion algorithm with higher accuracy.关键词
被动微波遥感/有云大气的影响/大气可降水量/云中液态水/地表温度Key words
passive microwave remote sensing/effects of cloudy atmosphere/precipitable water vapor/cloud liquid water/land surface temperature分类
信息技术与安全科学引用本文复制引用
孙川,宋小宁,周芳成,李召良..有云大气对AMSR-E传感器各通道微波信号影响的分析[J].中国科学院大学学报,2018,35(1):42-49,8.基金项目
国家自然科学基金(41231170)资助 （41231170）
