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微波波段土壤的介电常数模型研究进展 被引量:22

Research Progress on Dielectric Constant Model of Soil at Microwave Frequency
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摘要 介电常数反映了电介质与电磁波相互作用的特征。土壤介电常数是决定地表微波辐射散射特性的关键因素之一,是微波遥感研究中的一个关键参数。目前国内外对于土壤介电常数的研究已经持续很多年,建立多种土壤介电常数模型,包括理论模型、半经验模型和经验模型等。本文将详细介绍土壤介电常数的相关模型,指出了现有土壤介电常数模型存在的不足,并提出今后土壤介电常数模型的发展方向。 Dielectric constant describes the characteristics of the interaction between dielectric and electromagnetic wave.Soil dielectric constant is one of key factors to determine the microwave radiation and scattering properties of the earth surface.It is the key parameter of the research on microwave remote sensing.Many researches on soil dielectric constant have lasted many years at home and abroad.The existing soil dielectric constant model can be divided into theory model,semi-empirical model and empirical model.This article introduces soil dielectric constant models in detail,and points out the drawbacks of the existing soil dielectric constant models,and puts forward the future development direction of soil dielectric constant models.
出处 《遥感信息》 CSCD 北大核心 2015年第1期5-13,70,共10页 Remote Sensing Information
基金 国家重点基础研究发展计划资助(2013CB733406) 国家自然科学基金资助(41030534) 青年科学基金资助(41301356) 中央高校基本科研业务费专项资金资助(2013YB09)
关键词 土壤 介电常数 微波遥感 soil water dielectric constant microwave remote sensing
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参考文献30

  • 1张俊荣,王丽巍,张德海.植被和土壤的微波介电常数[J].遥感技术与应用,1995,10(3):40-50. 被引量:24
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