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为降低卫星的研制与开发成本,缩短总装总测周期,实现部件或单机的即插即用与快速测试,提出了卫星内无线射频通信设计方案.采用商用现货器件(COTS)实现了星内无线数据总线基本通信节点的设计,通过自主断电再加电控制策略,提高了COTS器件空间应用的可靠性.设计了三层模型结构的无线网络协议,采用(8,4)汉明码纠检错算法,提高了数据传输的可靠性.搭建了基于基本通信节点的星内无线网络试验平台,进行仿真验证,实验结果表明,基本通信节点可以随时接入和退出网络、异常情况下能实现自断电再加电重新运行,系统误码率满足卫星控制要求,星内无线射频通信方案可行.
In order to reduce the research and development cost of satellites, shorten the total test cycle of assembly, and realize the plug-and-play and quick test of components or stand-alone, a design scheme of wireless radio communication in satellites was put forward.The commercial off-the- The design of data bus basic communication node improves the reliability of space application of COTS device through self-powered power-off and power-on control strategy.The wireless network protocol of three-layer model structure is designed, Algorithm is proposed to improve the reliability of data transmission.An intra-band wireless network test platform based on basic communication nodes is set up and simulated. The experimental results show that the basic communication nodes can access and exit the network at any time, Power re-run again, the system error rate to meet the satellite control requirements, intra-band wireless RF communication solution feasible.