The coherence bandwidth of shortwave channel is calculated by using the density profile and wave propagation features in ionosphere.
从该电子密度模式和电离层波传播特性出发确定多径分量，计算短波信道相干带宽。
The propagation characteristic of the VLF in the earth-ionosphere waveguide is analyzed by applying the FDTD method.
应用时域有限差分（FDTD）方法分析甚低频在地电离层波导中的传播特性。
Additional current density, which is a function of frequency, can be used to describe the effect of the ionosphere in the process of electromagnetic pulse propagation.
电离层对电磁脉冲传播的影响可以用一个频域的电流密度来描述，在时域则等效为一附加的电流密度和电导率。
The wave propagation in the warm ionosphere is studied in this paper.
本文研究了波在暖电离层中的传播。
The wave propagation in the warm ionosphere is studied in this paper.
本文研究了波在暖电离层中的传播。
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