多刃峰环境无线电波传播预测的双向抛物方程法

Two-way parabolic equation approach for modeling radio wave propagation in the presence of multiple knife edges

摘要: 基于迭代双向抛物方程法求解了单刃峰和多刃峰环境下的前向和后向电波传播。对单刃峰,将双向与单向抛物方程法的数值结果做了比较,并分析了刃峰的位置和高度对后向反射场的影响。对多刃峰,采用迭代步进的双向抛物方程法计算相邻刃峰间的电波传播,并将数值结果与单向抛物方程法的结果进行对比。双向抛物方程法能计算出无线电波的前向传播场和后向传播场叠加的总场,比单向抛物方程法的预测结果更准确。

Abstract: Analysis of both forward and backward wave propagation in the presence of single knife-edge and multiple knife-edges using iterative two-way parabolic equation (2WPE) approach is presented.For single knife-edge problem, numerical results are compared with those of one-way parabolic equation (1WPE) approach. In addition, the effect of edge locations and heights on the backward-wave is studied. For multiple knife-edges problem, an iterative marching 2WPE algorithm is developed for modeling radio wave propagation between two adjacent knife-dges, and the numerical results are compared with those of one-way parabolic equation approach. 2WPE approach can be used to analyze the total field by adding the backward field to the forward field, so the results are more accurate than those from 1WPE.