大气对微波散射计回波信号衰减的修正方法研究  

A method to correct atmospheric attenuation of scatterometer backscatter from sea

作　　者：孙瀛[1] 郑淑卿[1] 白桂欣 

机构地区：[1]国家海洋局第三海洋研究所,厦门361005

出　　处：《台湾海峡》1995年第3期199-215,共17页Journal of Oceanography In Taiwan Strait

基　　金：国家航天办公室资助

摘　　要：为了使微波散射计测得的海面后向散射具有足够的精度，必须考虑大气对微波衰减的影响。大气对微波的衰减可以用微波辐射计来测定。本文将估算晴空、云和降雨天气下的衰减系数，讨论计算海面发射率及用微波辐射计剩余亮温估算散射计工作频率下大气衰减的方法。To measure the backscatter of scatterometer from the ocean with enugh accuracy, the effect of atmospheric attenuation over the sea must be considered. The attenuation can be determined by using microwave radiometer. The. attenuation coefficients under clear sky,cloudy and rainfall conditions have been estimated. The methds to estimate the sea surface emission and atmospheric attenuatin with the excess brightness temperature of microwave radiometer at the scatterometer frequency are discussed.

关 键 词：大气衰减 辐射计 微波散射计 回波信号 修正法 

分 类 号：P422.3[天文地球—大气科学及气象学]