星间链路自适应通信方法设计与验证  

Design and Verification of Adaptive Communication Method for Inter-satellite Link

作　　者：石雷[1] 罗清华[2] 窦骄[1] 李琪[1] SHI Lei;LUO Qinghua;DOU Jiao;LI Qi(DFH Satellite Co.,Ltd.,Beijing 100094,China;School of Information Science and Engineering,Harbin Institute of Technology,Weihai,Shandong 264299,China)

机构地区：[1]航天东方红卫星有限公司,北京100094 [2]哈尔滨工业大学信息科学与工程学院,山东威海264299

出　　处：《航天器工程》2025年第2期25-34,共10页Spacecraft Engineering

摘　　要：针对星间距离动态变化情况下,既要保证通信可靠性又要提高传输效率的问题,文章提出了星间链路基于自适应编码调制的动态数据传输机制,实现了在不同链路质量下的高效传输,构建了星间链路自适应通信框架,并建立星间链路通信信道知识库,通过自适应编码调制引擎,优化选择出最佳的编码和调制方案。在星间距离动态变化情况下,以及链路带宽不受限/受限条件下,仿真平台对自适应通信系统选取的编码调制方案、通信速率以及通信量进行了验证,结果表明:相比于传统星间链路通信系统采用的固定编码调制通信方法,文章提出的自适应编码调制通信方法有明显的优势,在保证通信可靠性的前提下实现最大化的系统通信量,可以为星座系统星间链路自适应通信方法的在轨应用提供参考。In response to the problem of ensuring communication reliability and improving transmission efficiency under the dynamic change of inter-satellite distance,a dynamic data transmission mechanism based on adaptive coding and modulation for inter-satellite link is proposed to realize efficient transmission under different link quality in this paper.An adaptive communication frame for inter-satellite link is constructed and a knowledge base of inter-satellite link communication channels is also established.Through an adaptive coding modulation engine,the optimal coding and modulation schemes are selected.In the case of dynamic changes in inter-satellite distance and limited/unlimited link bandwidth,the simulation platform has verified the optimal coding and modulation schemes,communication rate and data volume of the adaptive communication system.The results indicate that compared to the fixed coding and modulation communication method used in traditional inter-satellite link communication system,the adaptive coding and modulation communication method proposed in the paper has significant advantages,achieving maximum system communication volume while ensuring communication reliability,which can provide a reference for the in-orbit application of adaptive communication method for inter-satellite link in constellation systems.

关 键 词：星间链路 自适应 编码 调制 引擎 

分 类 号：TN919[电子电信—通信与信息系统]