第三部分 电波传播环境介绍

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第三部分 电波传播环境介绍. 在无线电系统中,信息的传递是靠电磁波的传播来实现的。无线电波从发射点传输到接收点必定要经过一定的空间场所( 媒质 ),这个空间场所会对无线电波的传播产生各种各样的影响,如反射、折射、绕射、散射和吸收等。其中,最基本的空间场所就是地球及其周围附近的区域(或称为 近地空间 ),因此在研究具体电波传播问题之前,有必要了解地球及其外围空间的概况。 - PowerPoint PPT Presentation

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