衍射则是电波绕射传播到遮蔽区的现象。
The diffraction effect is the phenomenon of wave propagation into shadow region.
结果表明在近海面环境下X波段电波的绕射传播不是最优的传播模式。
The result shows that the diffraction propagation on X-band is not the best model under the sea environment.
分析了电波的地波绕射传播、视距传播、散射传播和波导传播等四种传播模式,根据ITU - R和GZB建议的模型分别计算了各传播模式的基本传输损耗。
Four propagation models of diffraction, line-of-sight, scatting and duct are analyzed. The basic transmission loss for each of the models is calculated according to the ITU-R model and GZB model.
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