预估城镇小区电波传播损耗的一种三维抛物方程算法  

A Three-Dimension Parabolic Equation Algorithm for Predicting Radio Wave Propagation Loss in Urban Microcell

作　　者：柴舜连[1] 胡绘斌[1] 毛钧杰[1] 

机构地区：[1]国防科学技术大学电子科学与技术学院,长沙410073

出　　处：《微波学报》2006年第5期21-25,共5页Journal of Microwaves

摘　　要：为城镇小区电波传播问题建立了一种三维抛物方程模型,并且用二维分部傅立叶变换方法求解。计算了几种不同地形上建筑物障碍分布的小区电波传播衰减因子,和UTD理论及数值积分方法计算出的结果吻合得比较好,从而验证该模型的有效性,同时也说明了三维抛物方程模型能更准确地反映出小区建筑物宽度对场的绕射作用,为城镇小区电波传播问题的估算提供了一种更为准确的算法模型。A three dimensional parabolic equation （3 DPE） model for radio wave propagation in urban microcell is estabhshed and the solution of this model was obtained by the method of split-step two dimensions Fourier transformation. Through computing the wave propagation loss factor of construction obstacles distributing on different terrains, we can find the results accord well with the results obtained by the method of UTD and other numerical integral. So the validation of the model is testified and indeed the 3 DPE model reveals accurately the wave diffraction effect of the construction in lateral direction, it provides a very good algorithmic model for predicting radio wave propagation loss in urban microcell.

关 键 词：电波传播 三维抛物方程 分部傅立叶变换 衰减 

分 类 号：TN011[电子电信—物理电子学]