植被微波散射模型研究综述

摘要

精确的植被微波散射模型是理解微波遥感观测、发展遥感反演算法、提高植被参数和土壤含水量反演精度的基础和关键。针对其在微波观测模拟和反演中的重要性，该文对近几十年研究人员建立的系列植被微波模型，包括植被微波散射经验模型、理论模型和半经验模型进行了回顾，着重分析了基于电磁散射理论和辐射传输方程的理论模型的研究进展，对各模型的优缺点以及应用局限性进行了总结比较。最后，探讨了未来植被微波散射模型可以改进的方向。%Precise microwave scattering model of vegetation is the basic and key for understanding vegetation microwave remote sensing observations,development of remote sensing inversion algorithm,and improving the accuracy of vegetation parameters and soil moisture inversion.In recent decades,researchers established a series of microwave scattering model of vegetation based on electromagnetic scattering theory and radiative transfer equation for different vegetation types,which were widely used in microwave observations modeling and inversion.This paper systematically reviews the progress of the microwave vegetation scattering model in the aspects of theoretical model,semi-empirical model and empirical model.The main advantages and limitations of the three types of models are also proposed.Finally,the future trends of microwave scattering model of vegetation are discussed.