The influence of orbital maneuver on autonomous orbit determination of an extended satellite navigation constellation |
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Authors: | Youtao Gao Zhicheng You Jingyu Liu Bo Xu |
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Affiliation: | 1. Key Laboratory of Space Photoelectric Detection and Perception (Nanjing University of Aeronautics and Astronautics), Ministry of Industry and Information Technology, No.29 Yudao Street, Nanjing 210016, China;2. School of Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;3. Shanghai Institute of Satellite Engineering, Shanghai 201109, China;4. School of Aeronautics and Astronautics, Sun Yat-sen University, Guangzhou 510275, China |
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Abstract: | The right ascension of the ascending node is unobservable if only the inter-satellite ranging is used for autonomous orbit determination (AOD) of an Earth navigation constellation. However, if an Earth-Moon libration point satellite is added to the Earth navigation constellation to construct an extended navigation constellation, all the orbital elements can be determined with only the inter-satellite ranging. Furthermore, the extended navigation constellation can provide navigation information for interplanetary probes. For such an extended navigation constellation, orbital control needs to be considered due to the instability of the libration-point satellite orbit. This study concerns the influence of satellite orbital maneuver on the AOD of the extended navigation constellation. An AOD method under orbital maneuver is proposed. A low thrust controller is designed to achieve libration point satellite autonomous orbit maintenance by using AOD results. A navigation constellation consisting of three GPS satellites and one libration point satellite are designed for simulation. The simulation results show that libration point satellites can achieve autonomous navigation and autonomous orbit maintenance by only using inter-satellite ranging information. The rotation drift error of the Earth navigation constellation is also suppressed. |
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Keywords: | Libration points Autonomous orbit determination Orbit maintenance Inter-satellite ranging |
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