中国空间科学技术

中国空间科学技术 ›› 2023, Vol. 43 ›› Issue (5): 24-34.doi: 10.16708/j.cnki.1000-758X.2023.0065

• 巨型星座/低轨大规模星座专栏 • 上一篇    下一篇

基于Markov-ADC模型的星座覆盖性能分析

孙景云1，2，张国亭1，柳震2，郭洁1，王进1   

  1. 1 北京跟踪与通信技术研究所，北京100094
    2 航天科工集团第三研究院 航天科工海鹰卫星运营事业部，北京100071
  • 出版日期:2023-10-25 发布日期:2023-09-12

Constellation coverage performance analysis based on Markov-ADC model

SUN Jingyun1，2，ZHANG Guoting1，LIU Zhen2，GUO Jie1，WANG Jin1   

  1. 1 Beijing Institute of Tracking and Telecommunications Technology，Beijing 100094，China
    2 Hiwing Satellite Operation Division，The Third Institute of China Aerospace Science and Industry Corporation（CASIC）， Beijing 100071，China
  • Published:2023-10-25 Online:2023-09-12

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摘要： 星座覆盖性能是通信、导航、遥感星座提供服务的基础，是评价星座系统效能或健康状态的重要指标之一。在研究低轨大型星座覆盖性能分析需求的基础上，提出基于ADC（availability，dependability，capability，可用度、可信度和星座能力）星座健康状态评估模型。利用全概率公式并结合单星可用度计算星座初始状态概率，考虑单星故障率和修复率提出星座状态转移概率计算方法，基于覆盖重数、重访间隔、平均单日星座目标连接数、全覆盖所需时长四个指标参数建立星座覆盖性能指标体系，分别使用客观赋权法和主观赋权法对指标参数赋予权重值，通过仿真分析，得到星座的健康状态值，为星座的设计、优化、维修等问题提供依据。

关键词: 星座, 覆盖, 效能评估, 马尔科夫, ADC

Abstract: Coverage performance is the basis for communication，navigation and remote sensing constellation to provide services.It is one of the important indicators to evaluate the effectiveness or health status of constellation system.On the basis of studying the coverage performance of large constellation in low orbit，a constellation health status evaluation model based on ADC（availability，dependability，capability）was proposed.The initial status probability of constellation was calculated by using the full probability formula combining with the availability of single satellite.The constellation state transition probability was put forward considering the failure rate and repair rate of a single satellite.The constellation coverage performance system was established based on four parameters：coverage weight，revisit interval，average access number per day，and the time required for full coverage.The objective weighting method and subjective weighting method were used to give the weight values to the parameters respectively.By the way of simulation and analysis，the health status values of the constellation are obtained，which can provide a basis for the design，optimization，maintenance and other issues of the constellation.

Key words:  , constellation；coverage；performance evaluation；Markov；ADC