星间链路技术的研究现状与发展趋势

星间链路技术是提高全球卫星导航系统的精度和自主导航能力的一项关键技术。介绍了全球主要卫星导航系统星间链路的建设情况，综述了国内外关于星间链路的重要研究，包括星座的特性分析、星间链路的构建准则、星间链路的拓扑分析、星间链路传播信号的设计以及星间链路信号的发射和接收等，指出了目前研究的侧重点，展望了星间链路的发展趋势和未来的研究方向。相关内容可为星间链路的进一步研究提供参考。

Present status and development trends of inter-satellite link

Inter-satellite link technology is a key technology to improve the accuracy and autonomous navigation capabilities of global satellite navigation system.In this paper,the construction of inter-satellite links in major global navigation satellite systems are described.Some important researches on the inter-satellite links are reviewed,including analysis of a constellation of features,building guidelines of inter-satellite links,topological analysis of inter-satellite links,design of signal on the inter-satellite links,and transmitting and receiving method of signal on the inter-satellite links.The focus of the present study of inter-satellite links is pointed out,the development trends and future research directions are prospected.The research of this paper provides some reference for the profound research of inter-satellite link.