低轨道卫星移动通信系统传播特性的测试与分析

The test and study of system propagation characteristic of LEO mobile satellite communication

低轨道卫星移动通信是目前新兴的卫星通信系统,国内外对于其电波传播特性的研究目前均处于探索阶段,我们通过在轨运行的低轨道卫星移动通信系统(铱系统)的部分传播特性进行了测试,摸索了对低轨道通信卫星电波特性测试的方法,并对数据进行分析,获得了相关参数,这些参数对了解低轨道通信卫星的电波传播特性并对于我们进行低轨道卫星的设计有参考意义。

In order to attain system propagation characteristic parameters of LEO mobile satellite communication system,we build a test system to measure the system propagation characteristic of Iridium and we obtained a mass of measurement data in 1999. On the base of analyzing these data,we gain some coherent characteristic parameters,it gives a way to test and obtain the parameters of LEO mobile satellite communication and offers some important references to research and develop LEO mobile satellite communication systems for China.