标准化星间激光通信链路接口模型设计方法

在星间数据交换过程中,同时传输不同类型的数据会对系统性能产生较大影响。为统一传输制式,提高数据传输效率,提出星间激光链路接口模型。在星间激光链路接口模型中,针对节点卫星数据处理转发效率低的问题,设计数据帧调整单元整合不同信源的数据；针对空间信道随机错误对系统性能影响较大的问题,添加链路传输处理单元提高激光链路传输的可靠性。研究了星间激光链路接口模型在中继卫星系统与分布式卫星系统中的实现方法。结果表明,采用星间激光链路接口模型后系统传输效率提升了49.93%,纠错性能提升了3.01 dB。

Standardization design of inter-satellite laser link interface model

In the procedure of inter-satellite data exchange,the different types of simultaneous data transmission have a serious impact on system performance.Inter-satellite laser link interface model (ILIM)is proposed to unify the transfer mode of optical satellite network and to improve the data transmission efficiency.In inter-satellite communication,the node satellite has low retransmission efficiency.Therefore,data frame adaptation unit is designed to integrate the data from different sources.Link transmission processing unit (LTU)is added to reduce the influence of system performance which cause by random error in spatial channels,and it can enhance the reliability of the laser link transmission.The applicability of ILIM for Relay Satellite System and Distributed Satellite System is studied.The results show that the transmission efficiency is improved by 49.93% and the system error correction performance is heightened by 3.01 dB after applying ILIM.