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抛物方程已经被广泛地应用于电波传播预测模型,并成为解决电磁波传播问题的主要工具。针对目前大多数预测模型处理粗糙海面的不足,引进了一种能包含海面阴影效应的粗糙度修正因子,并由于电波在海面上传播主要受到蒸发波导和粗糙海面的影响,结合抛物方程和蒸发波导理论对海面上的电波传播进行了研究,利用PE模型计算了电波在蒸发波导中不同条件下的传播损耗,并分析了蒸发波导和粗糙海面对电波传播的影响。
Parabolic equations have been widely used in radio propagation prediction models and become the main tools for solving electromagnetic wave propagation problems. Aiming at the shortcoming that most of the prediction models deal with the rough sea, a roughness correction factor that can contain the shadow effect of the sea surface is introduced. Since the electric wave propagates on the sea surface is mainly affected by the evanescent waveguide and the rough sea surface, combined with the parabolic equation and the evanescent waveguide The theory is used to study the wave propagation on sea surface. The propagation loss of electric wave under different conditions is calculated by PE model. The influence of evanescent wave guide and rough sea on radio wave propagation is analyzed.