系统工程与电子技术 ›› 2024, Vol. 46 ›› Issue (12): 4149-4156.doi: 10.12305/j.issn.1001-506X.2024.12.23

• 系统工程 • 上一篇    

面向全球快速重访的限制性Walker星座设计方法

李胜西1,2, 李海阳1,2,*, 何湘粤3   

  1. 1. 国防科技大学空天科学学院, 湖南 长沙 410073
    2. 空天任务智能规划与仿真湖南省重点实验室, 湖南 长沙 410073
    3. 国防科技大学试验训练基地, 陕西 西安 710106
  • 收稿日期:2023-05-03 出版日期:2024-11-25 发布日期:2024-12-30
  • 通讯作者: 李海阳
  • 作者简介:李胜西 (1999—), 男, 硕士研究生, 主要研究方向为航天动力学
    李海阳 (1972—), 男, 博士, 教授, 主要研究方向为载人航天系统仿真与分析
    何湘粤 (1995—), 男, 助理研究员, 博士, 主要研究方向为飞行器总体设计与系统仿真
  • 基金资助:
    国家自然科学基金(12072365);湖南省自然科学基金(2020JJ4657)

Design method of restricted Walker constellation for global rapid revisit

Shengxi LI1,2, Haiyang LI1,2,*, Xiangyue HE3   

  1. 1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China
    2. Hunan Key Laboratory of Intelligent Planning and Simulation for Aerospace Missions, Changsha 410073, China
    3. Test Center, National University of Defense Technology, Xi'an 710106, China
  • Received:2023-05-03 Online:2024-11-25 Published:2024-12-30
  • Contact: Haiyang LI

摘要:

自然灾害、军事冲突等突发热点事件的发生地点往往具有随机性, 因此需要在全球范围内提高具有侦察、探测等具体任务背景的稀疏星座的快速重访能力。基于限制性Walker星座的概念, 即通过将轨道面升交点赤经均匀分布的范围限制在特定的数值区间内, 对常规Walker星座进行改造, 提出一种能实现全球范围内快速重访的星座设计方法。以最大时间分辨率最小化为优化目标设计优化问题, 借助差分进化算法求解最优限制性Walker星座构型。仿真结果表明, 所提方法所得到的限制性Walker星座, 在不连续覆盖性能方面优于常规的Walker星座以及已有文献所提出的星座。

关键词: 非对称星座, 星座构型优化, 差分进化算法, Walker星座, 全球覆盖, 快速重访

Abstract:

The occurrence of hot spot events such as natural disasters and military conflicts often exhibits randomness in terms of location. Therefore, it is necessary to enhance the rapid revisit capability of sparse constellations with specific task backgrounds, such as reconnaissance and detection, on a global scale. Based on the concept of restricted Walker constellation, which constrains the range of right ascension of ascending nodes uniformly distributed within specific numerical intervals. The conventional walker constellation is reconstructed and a design method for constellation is proposed to achieve rapid revisit capability on a global scale. Then the optimization problem is designed with the maximum time resolution minimization as the optimization objective, and the optimal restricted Walker constellation configuration is solved by differential evolution algorithm. Simulation results show that the restricted Walker constellation designed by the proposed method is superior to the conventional Walker constellation and the constellation proposed in the existing literature in terms of discontinuous coverage performance.

Key words: asymmetric constellation, constellation configuration optimization, differential evolution algorithm, Walker constellation, global coverage, rapid revisit

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