A constellation configuration design method for ship monitoring

By calculating the positional relationship between the ship route and the satellite sub-satellite point trajectory, designing the satellite constellation configuration, and using genetic algorithms to optimize the satellite orbit, the difficulties in signal transmission and resource allocation in maritime ship monitoring are solved, and efficient ship monitoring and satellite resource utilization are achieved.

CN118999593BActive Publication Date: 2025-09-23SUN YAT SEN UNIVERSITY SHENZHEN +1
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Patent Information

Application Number
CN202411068223.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-06
Publication Date
2025-09-23
Estimated Expiration
2044-08-06

AI Technical Summary

Technical Problem

Existing technologies are unable to effectively solve the problems of signal transmission difficulties, ship trajectory uncertainty and satellite resource allocation difficulties in maritime ship monitoring, especially in real-time monitoring of ship activities in complex maritime environments.

Method used

By calculating the positional relationship between the ship route and the satellite sub-satellite point trajectory, the satellite constellation configuration is designed, the satellite orbit is optimized using an optimization algorithm, and the constellation configuration is optimized using a genetic algorithm to ensure that satellite sensors cover the ship route, and the satellites are grouped and numbered.

Benefits of technology

It achieves effective monitoring of ships in a maritime environment, avoids the influence of uncertainty in ship motion, and realizes efficient allocation and reuse of satellite resources.

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Abstract

The present invention provides a constellation configuration design method for ship monitoring. The method includes modeling satellite orbits based on the J2 model and designing satellite regression orbits, using an imaginary line segment with the departure port and destination port as endpoints as the imaginary trajectory of the ship between the two ports; calculating the locations and number of predetermined points where the satellite subsatellite point trajectories intersect with the imaginary trajectory of the ship; grouping and numbering satellites; calculating the latitude and longitude coordinates of the subsatellite point trajectories for each group of satellites in the constellation; and optimizing the constellation configuration using a genetic algorithm. By directly calculating the geometric relationship between the satellite subsatellite points and the line connecting the two ports, the method effectively avoids the design difficulties caused by the uncertainty of the ship's actual motion. The method also utilizes regression orbit satellites, enabling the reuse of the constellation.
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