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Acta Aeronautica et Astronautica Sinica ›› 2025, Vol. 46 ›› Issue (15): 331570.doi: 10.7527/S1000-6893.2024.31570

• Electronics and Electrical Engineering and Control • Previous Articles    

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

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

CLC Number: