Transactions of Nanjing University of Aeronautics & Astronautics
Inter-satellite Link Topology Design and Relative Navigation for Satellite Clusters
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Abstract:
A distributed relative navigation approach via inter-satellite sensing and communication for satellite clusters is proposed. The inter-satellite link （ISL） is used for ranging and exchanging data for the relative navigation， which can improve the autonomy of the satellite cluster. The ISL topology design problem is formulated as a multi-objective optimization problem where the energy consumption and the navigation performance are considered. Further， the relative navigation is performed in a distributed fashion， where each satellite in the cluster makes observations and communicates with its neighbors via the ISL locally such that the transmission consumption and the computational complexity for the navigation are reduced. The ISL topology optimization problem is solved via the NSGA-Ⅱ algorithm， and the consensus Kalman filter is used for the distributed relative navigation. The proposed approach is flexible to varying tasks， with satellites joining or leaving the cluster anytime， and is robust to the failure of an individual satellite. Numerical simulations are presented to verify the feasibility of the proposed approach.
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This work was supported by the National Natural Science Foundation of China （No.61801213）.
Clc Number:
V448.2
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