海上蒸发波导条件下电波传播的分析

摘要

抛物方程方法已经被广泛地应用于电磁波传播的研究,并成为解决电磁波传播问题主要的工具。应用抛物方程和电波传播的基本理论,计算了电磁波在蒸发波导和标准大气中的传输损耗,得到了电波的空间传播损耗图,与射线理论的射线描迹技术得到的结论是一致的,但是抛物方程方法求解速度快,具有很好的实时计算特性,并且能弥补目前射线描迹技术尚不能精确描述空间场分布的缺点,因此更具有实用价值。%The parabolic equation method has been used widely in the electromagnetic wave propagation model and becomes the main tool to resolve the problem of electromagnetic wave propagation.With the parabolic equation method and the basic theory of radio-wave propagation,the transmission loss is calculated at the evaporation duct and at standard atmosphere,and the conclusion is the same with that of ray tracing technology.But the parabolic equation method can be solved more quickly,with real-time computing features,and the parabolic equation method can make up for the disadvantage,such as the ray tracing technology can＇t still accurately describe the spatial distribution,so it has more important application value in parabolic equation.