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随着全球宽带通信需求的增长,世界各国提出并建设了多种低轨通信星座,我国的卫星互联网系统也在紧张建设中,星间链路将是通信星座系统的重要组成部分。为研究星间链路特点和建链需求,以极轨通信星座为例,从几何角度给出了星间链路指向角和距离的数值计算公式,分析了顺行轨道星间链路的变化规律,并进一步研究了异轨星间反向缝建链的特点。研究结果表明,选取合适的星座参数,可以实现卫星跨反向缝的接续建链,从而保证反向缝两侧卫星之间始终存在可用的通信链路。
Abstract:With the growth demand for global broadband communication, various LEO communication constellations have been proposed and constructed by countries around the world. China's Satellite Internet System is also under way, and inter satellite links will be an important part of the communication constellation system. In order to study the characteristics of inter satellite links and the requirements for building chains, taking the polar communication constellation as an example, numerical calculation formulas for the pointing angle and distance of inter satellite links are provided from a geometric perspective. The variation law of forward orbit inter-satellite links is analyzed, and the characteristics of cross seam chain building are further studied. Based on the research results, it is possible to achieve continuous chain building across the cross seam by selecting appropriate constellation parameters, thereby ensuring that there is always a usable communication link between satellites on both sides of the cross seam.
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基本信息:
中图分类号:TN927.2
引用信息:
[1]王立民,安绍毅,覃智祥.低轨通信星座星间链路特点研究[J].无线电工程,2023,53(09):2196-2202.
基金信息:
青年科学基金项目(62201533)~~
2023-09-05
2023-09-05