陆地移动通信多径传播中电波径数的分布及模拟

PathNumber Distribution for Multipath Propagation in Land Mobile Communications and Its Simulation

本文根据ＶＨＦ、ＵＨＦ陆地移动通信中电波传播的实际特点，考虑了电波径数变化为一个有限容量状态空间的生灭过程，导出了多径传播中电波径数的分布模式，其理论值与实验测量结果一致性较好。本文还对移动接收电台运动过程中电波径数的动态随机变化进行了计算机模拟，给出了具体的模拟方法和结果。

Based on the basic characteristics of VHFUHF wave propagation in land mobile communications, a birthanddeath process in finite state space is considered for the pathnumber variation of radio wave,and a pathnumber distribution for the multipath propagation in land mobile communications is derived. Theoretical values of the present model agree well with experimental results. This model is suitable for use in any specific propagation environment after parameters of the model have been defined according to experimental results of its service area. The dynamic variation of path number with the mobile station moving is simulated,and both the method and the results are presented.