航空学报 > 2025, Vol. 46 Issue (15): 331570-331570   doi: 10.7527/S1000-6893.2024.31570

基于视场映射模型的GEO目标观测覆盖性分析

顾轶1, 王慧林2, 郭鹤鹤3, 伍国华4, 曾志强5()   

  1. 1.中南大学 交通运输工程学院,长沙 410083
    2.中国卫星导航系统管理办公室,北京 100034
    3.北京空间飞行器总体设计部,北京 100094
    4.中南大学 自动化学院,长沙 410083
    5.北京航空航天大学 数学科学学院,北京 100191
  • 收稿日期:2024-11-25 修回日期:2024-12-01 接受日期:2024-12-10 出版日期:2024-12-18 发布日期:2024-12-18
  • 通讯作者: 曾志强 E-mail:zhiqiangzeng2018@buaa.edu.cn
  • 基金资助:
    国家自然科学基金(62373380);国家资助博士后研究人员计划(GZC20233380);中央高校基本科研业务费专项资金

Analysis of GEO target observation coverage based on field of view mapping model

Yi GU1, Huilin WANG2, Hehe GUO3, Guohua WU4, Zhiqiang ZENG5()   

  1. 1.School of Traffic and Transportation Engineering,Central South University,Changsha 410083,China
    2.China Satellite Navigation Office,Beijing 100034,China
    3.Beijing Institute of Spacecraft System Engineering,Beijing 100094,China
    4.School of Automation,Central South University,Changsha 410083,China
    5.School of Mathematical Sciences,Beihang University,Beijing 100191,China
  • Received:2024-11-25 Revised:2024-12-01 Accepted:2024-12-10 Online:2024-12-18 Published:2024-12-18
  • Contact: Zhiqiang ZENG E-mail:zhiqiangzeng2018@buaa.edu.cn
  • Supported by:
    National Natural Science Foundation of China(62373380);the Postdcoctoral Fellowship Program of the China Postdoctoral Science Foundation(GZC20233380);the Fundamental Research Funds for the Central Universities

摘要:

地球静止轨道(GEO)航天器是具有高价值的空间资产,也是空间态势感知中的重要目标。面向我国太空安全保障的需求,本文基于天基观测平台,开展对高轨道空间目标覆盖分析的研究工作。首先提出天基观测平台的载荷视元模型,并建立观测GEO目标的载荷视元方程,通过对该方程进行求解,可以得到二维平面上的视场映射域,从而将天基平台对GEO目标的覆盖分析问题转化为二维平面上的轨迹相交问题;针对准GEO目标覆盖分析问题,通过提出等效地球自转角速度概念并改进视场映射域方法进行求解;进一步地,基于多星相对视场映射域的概念,将单星覆盖分析方法拓展至同质星座覆盖应用场景。大量仿真实验结果表明,与STK的计算结果对比,所提出方法的可见窗口计算精度优于0.1 s,这验证了所提出的模型和方法的有效性。

关键词: GEO目标, 天基观测资源, 态势感知, 映射域, 可见性计算

Abstract:

Geostationary Orbit (GEO) spacecraft are critical space assets and pivotal in space situational awareness. This paper addresses China‍’‍s space security requirements by conducting coverage analysis of high-orbit space targets from a space-based observation platform. Initially, a novel load element model for space-based observation platforms is introduced, alongside an equation for GEO target observation. Solving this equation delineates the field of view mapping domain on a two-dimensional plane, with the trajectory of the platform represented as a line segment. This reformulates the observation window issue for GEO targets into a trajectory intersection problem on the plane. To address the issue of quasi GEO target coverage analysis, we propose the concept of equivalent Earth rotation angular velocity and improve the field of view mapping domain method for solution. Additionally, the concept of a multi-star relative field of view mapping domain is introduced, extending the single-star coverage analysis to constellation coverage scenarios. Extensive simulation experiments reveal that the visible window calculation error of the proposed method is smaller than 0.1 s when compared to STK calculations, thereby validating effectiveness of the proposed model and method.

Key words: GEO target, space-based observation resources, situational awareness, mapping domain, visibility calculation

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