High-speed inter-satellite link construction technology for navigation constellation oriented to engineering practice

IF 0.5 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS Open Astronomy Pub Date : 2022-01-01 DOI:10.1515/astro-2022-0199

Canyou Liu, Feng Zhang, Hao-Yang Ma, Shuang Chen, Xin Wang, Xiusong Ye

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Abstract

Abstract This article presents a study on the design of high-speed inter-satellite links for the global navigation satellite system, which consists of 24 middle earth orbit, 3 inclined geosynchronous orbit, 3 geostationary orbit satellites, and 4 typical ground stations based on the laser link of slowly varying continuous system and high-speed Ka link. Pre-allocation of node connections in inter-satellite link construction is conducted by employing the optimized Dijkstra algorithm using finite-state automata. In addition, topological design and routing planning principles are utilized for high-speed inter-satellite links. Based on full constellation orbit data of a regression period and locations of the ground station nodes, an hourly link construction program is obtained using the scheme described above. The calculation result of the position dilution of precision values of all satellites, the average inter-satellite transmission delay, and the inter-satellite link switching meet the requirements of measurement, data transmission, and management for navigation constellation.

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面向工程实际的导航星座高速星间链路建设技术

摘要本文研究了基于慢变连续系统激光链路和高速Ka链路的全球导航卫星系统的高速星间链路设计，该系统由24颗中地球轨道、3颗倾斜地球同步轨道、3颗地球静止轨道卫星和4个典型地面站组成。采用优化后的有限状态自动机Dijkstra算法对星间链路构建中的节点连接进行预分配。此外，在高速星间链路中采用了拓扑设计和路由规划原理。基于一个回归周期的全星座轨道数据和地面站节点位置，采用上述方案得到逐时链路建设方案。各卫星精度值的位置稀释、星间平均传输时延和星间链路切换的计算结果满足导航星座测量、数据传输和管理的要求。

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来源期刊

Open Astronomy Physics and Astronomy-Astronomy and Astrophysics

CiteScore

1.30

自引率

14.30%

发文量

审稿时长

16 weeks

期刊介绍： The journal disseminates research in both observational and theoretical astronomy, astrophysics, solar physics, cosmology, galactic and extragalactic astronomy, high energy particles physics, planetary science, space science and astronomy-related astrobiology, presenting as well the surveys dedicated to astronomical history and education.