一种适用于远距离星间链路通信的设计

An Inter-satellite Links System Design for the Long Distance Communication

为解决远距离星间通信时存在的两星之间通信视场变窄甚至星间通信信号中断等问题,提出了一种适用于远距离星间链路通信的设计;该设计采用将卫星上的星间发射、接收天线按照天线波束指向计算得到的调整角度进行倾斜安装、采用窄波束、高增益的星间发射、接收天线以及采用卷积编码作为信道编码方式等设计方法;通过两星之间通信视场可见性分析及计算、星间链路信道分析及余量计算和使用STK软件进行星间通信视场仿真覆盖性分析进行了验证,结果表明:该设计能够保证两星之间满足星间通信视场的可见性要求,星间链路信道余量满足正常通信的要求;该星间通信链路设计能够适用于远距离的星间链路通信,可为小卫星编队飞行及其它低轨航天器之间进行远距离星间通信提供设计参考。

In order to solve the problem of narrowing of the field of view and signal interruption in the long distance intersatellite communication,a design for the long distance inter-satellite link communication is proposed.The design uses the inter-satellite emission and receiving antenna to be tilted to install according to the adjustment angle calculated by the antenna beam direction,uses the narrow beam,high gain inter-satellite emission and receiving antenna and uses convolution coding as channel coding.By the visibility analysis and calculation of communication field of view,the inter satellite link channel analysis and allowance calculation and the coverage analysis of field simulation of inter satellite communication using STK software,the results show that the design can ensure to meet the visibility of inter satellite communication,the inter satellite link channel allowance to meet the requirements of normal communication.The design is suitable for the long distance communication,and it is applicable to small satellites and other LEO satellites.