针对不规则地形和非标准大气环境,推导了电磁波传播的抛物型方程模型。该模型基于修正平坦地面的抛物型方程,采用了分步傅里叶算法;使用AREPS3.0软件计算不同距离上的路径损耗,大气信息取自舰载气象站;并与舰载雷达实际观测数据进行比较,结果表明两者有较好的吻合。

A numerically efficient method has been developed to model troposphere radiowave propagation over irregular terrain in the presence of range-dependent,non-standard environmental conditions.The model is based on a modification to the smooth-earth parabolic equation,and uses the split-step Fourier algorithm.The Windows-based software,AREPS3.0,is applied to compute path loss versus range in the troposphere,using atmospheric information from shipboard weather prediction station.The results coincide with the shipboard radar detected range.

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