航天器间无线通信链路中断的预测研究

Prediction of Wireless Communication Interruption Between Spacecraft

研究了持续相对运动中,主、从航天器之间的无线通信链路中断问题,提出了其通信中断情况的仿真分析方法。基于Friis传输方程,根据主、从航天器天线的发射功率、带外抑制和接收机灵敏度等,解算接收信号强度余量。以此模型为基础进行仿真,得到了航天器间无线通信链路中断情况的分析结果,并与实际在轨情况进行比较。结果表明,文章提出的仿真分析方法能够对持续相对运动航天器间的无线通信链路中断情况进行预测,可为实际任务的顺利完成提供技术支持。

The problem of wireless communication interruption between main and slave spacecraft is investigated, and a simulation approach of prediction of wireless communication interruption between relative motion spacecraft is presented. Based on Friis transport equation, according to the transmit power, out-of-side rejection and sensitivity of receiver, the receiving signal intensity allowance is calculated. In the precondition of an assumed model, the simulation result of wire- less communication interruption is calculated and compared with the real on-orbit situation. According to the compared results, the approach given by the paper can achieve the goal of fore- casting the wireless communication interruption which can support space mission technically. between spacecraft during persistent move,