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双层地面植被散射模型的Monte Carlo方法研究

发表时间:2010-11-30  浏览量:1386  下载量:421
全部作者: 郭立新,王安琪,李清亮,程相哲
作者单位: 西安电子科技大学理学院;中国电波传播研究所
摘 要: 利用Monte-Carlo方法对双层植被的电磁散射特性进行研究,其中植被的散射模型采用植被层和粗糙地面层组成的双层介质模型描述,并考虑实际植被模型中散射体与实际地面之间相互作用所引起的电磁散射增强效应。与有关实际测量数据进行对比,所提出的算法满足计算的精度要求。同时,计算不同极化状态下的双站散射系数角分布,讨论具有一定粗糙度的地面层均方根高度、相关长度、植被层厚度和土壤湿度对双层植被模型双站电磁散射系数的影响。
关 键 词: 电磁波物理;Monte-Carlo方法;双层植被;电磁散射;地面
Title: Investigation on scattering from two-layer model of ground-vegetation using Monte-Carlo method
Author: GUO Lixin, WANG Anqi, LI Qingliang, CHENG Xiangzhe
Organization: School of Science, Xidian University; China Research Institute of Radio-Wave Propagation
Abstract: The Monte-Carlo method is applied to investigate on the properties of electromagnetic scattering from the two-layer vegetation model, where the model is composed of single-layer vegetation and the ground with rough surface. The electromagnetic scattering enhancement caused by the interaction between the scatter and the ground in the two-layer model is considered. The presented algorithm is verified by comparing the numerical simulation to the experimental results. The angular distribution of the bistatic coefficient is also calculated for different polarizations, and the influence of the root-mean-square (rms) height, the correlation length of the ground, the thickness of the vegetation, as well as the moisture of the soil on the scattering coefficient of the two-layer model are mainly discussed.
Key words: electicmagnetic wave physics; Monte-Carlo method; two-layer vegetation; electromagnetic scattering; ground
发表期数: 2010年11月第22期
引用格式: 郭立新,王安琪,李清亮,等. 双层地面植被散射模型的Monte Carlo方法研究[J]. 中国科技论文在线精品论文,2010,3(22):2321-2327.
 
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