电讯技术2018，Vol.58Issue(3)：257-262,6.DOI:10.3969/j.issn.1001-893x.2018.03.004
抛物方程法在森林环境电波传播特性预测中的应用
Application of Parabolic Equation Model for Wave Propagation in Forest
刘晓娣 1宋斌斌 1张静 1毕敬腾1
作者信息
- 1. 海军航空工程学院 电子信息工程系,山东 烟台264001
- 折叠
摘要
Abstract
The application of parabolic equation(PE) model for wave propagation in forest is researched. And the forest model based on PE is proposed to improve the accuracy of the wave propagation characteris-tics prediction in forest.PE is used to analyze this model for the accuracy and timeliness of the radio wave propagation.Considering the non-uniform distribution of forest in the vertical,the stratified model is intro-duced and forest is divided into canopy and trunk lossy dielectric layers,positioned between air and ground.The equivalent dielectric permittivity of each lossy layer is solved according to the feature parame-ters of forest.Compared with the traditional model which takes the forest as a uniform lossy layer with a giv-en equivalent dielectric permittivity,the new model can describe the effect of forest on wave propagation more correctly.The model is applied to predict the wave propagation in three kinds of common trees.Nu-merical simulations demonstrate this model can reflect the effect of the difference in domain and tree spe-cies,and can predict wave propagation loss in large domain forest environment effectively.关键词
电波传播/抛物方程/森林分层模型/等效介电常数Key words
wave propagation/parabolic equation(PE)/forest stratified model/equivalent dielectric permittivity分类
信息技术与安全科学引用本文复制引用
刘晓娣,宋斌斌,张静,毕敬腾..抛物方程法在森林环境电波传播特性预测中的应用[J].电讯技术,2018,58(3):257-262,6.
