Abstract

The caustic structure of the electromagnetic field is mathematically modeled, when it appears near the ground surface during the decimeter radio wave propagation in the ionospheric plasma. The caustic structures of the fields of the ordinary and extraordinary waves are compared. The influence of the extraordinary wave on the amplitude structure of the ordinary wave field is also estimated in the vicinity of the caustic. The wave fields calculated with the help of the caustic approximation and with the help of the irregular ray approximation are compared. It is suggested to estimate the maximum value of the field amplitude in the vicinity of the caustic on the basis of the ray approximation.

中文翻译：

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电离层传播过程中普通波和非凡波的焦散性附近区域的模拟

摘要

当电离层等离子体中分米的无线电波传播期间，电磁场的苛性结构出现在地表附近时，可以用数学方法对它进行建模。比较了普通和异常波场的苛性结构。还在苛性碱附近估计了异常波对普通波场的振幅结构的影响。比较了通过苛性近似和不规则射线近似计算出的波场。建议基于射线近似估计苛性碱附近的场振幅最大值。