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- 2016
基于北斗授时和星历的卫星跳频通信方法
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Abstract:
提出了一种基于北斗授时和卫星星历实现跳频同步并且适用于卫星与地面站上下行链路的跳频通信方法。首先基于卫星星历，采用SGP4模型预测卫星轨道，计算卫星与地面站的相对位置和相对速度，然后估计电波传播时延和多普勒频偏，最后在地面站分别进行预校正与补偿，完成星地的高速跳频通信。仿真实验结果表明，与传统的跳频系统相比，该方法硬件复杂度低，电波传播时延估计精度优于300 ns，归一化多普勒频偏估计精度优于1×10-8，开销为1%时跳频速率可达20 000 Hops/s，具有优良的抗干扰和抗截获性能
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