卫星通信上下行链路信号的侦收分析

Reconnaissance and Reception Analysis of Uplink and Downlink Signals for Satellite Communication

从卫星传输链路着手,分析了卫星通信行链路的信号侦收原理,通过地面侦收设备和机载侦收设备对卫星和地球站的通信信号进行侦收,进行了理论推导,给出了侦收设备在不同地理位置对侦收效果影响的表达式,可以计算不同位置侦收设备收到的能量,并进行了MatLab仿真实验以找寻合理的地面或者机载侦收设备的配置方案。结果表明侦收效果好的侦收设备,其地理位置更易暴露,所以在实际配置时要综合考虑。

Starting from the satellite transmission link,this paper analyzes the signal reconnaissance and reception principle of satellite communication line link,detects and receives the communication signals between satellite and ground station through ground and airborne reconnaissance and reception equipments,performs the theoretical derivation,presents the expression of reconnaissance and reception equipments at different geographic positions on the reconnaissance and reception effect,by which can calculate the energy received from reconnaissance and reception equipments at different geographic positions,and performs Matlab simulation experiment to discover the reasonable collocation scheme of ground or airborne reconnaissance and reception equipments.Results show that the geographical location of reconnaissance and reception equipments with better detection effect emerges easily,which must be considered in the actual collocation.