分层土壤后向散射及其在深层土壤湿度探测中的应用  

Backscattering from Multilayer Soil and Its Application to Deep Soil Moisture Estimation

作　　者：张文吉[1] 张晓娟[1] 李芳[1] 

机构地区：[1]中国科学院电子学研究所

出　　处：《电子与信息学报》2008年第9期2107-2110,共4页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(60371003)资助课题

摘　　要：该文定量地分析了频率、入射角、土壤介电常数等主要因素对电磁波穿透性能的影响。计算了分层土壤后向散射系数与地表参数,介电常数,系统工作频率,极化方式,入射角的关系,并从理论上得到验证,为深层土壤湿度反演提供了一个比较合理的模型。文中结论对低频段(0.1-1GHz)合成孔径雷达系统设计及深层土壤湿度反演具有实际应用价值。Influence of frequency, incident angle, soil dielectric on the penetration ability of electromagnetic wave is quantitatively analyzed. The backscattering from multilayered soil is studied. The model is validated against known solutions to special cases, which can be used in the inversion of deep soil moisture. The conclusion provides a good reference for the design of low frequency （0.1-1GHz） synthetic aperture radar and inversion of deep soil moisture.

关 键 词：微波遥感 后向散射 分层土壤 深层土壤湿度 

分 类 号：TP722.6[自动化与计算机技术—检测技术与自动化装置]