A method, device, medium and product for determining continuity of low-orbit satellite navigation messages at a monitoring station

By acquiring and analyzing the navigation message packets received by the monitoring station and calculating the actual and theoretical number of received navigation message packets, the problem of unclear continuity analysis of low-orbit satellite navigation messages was solved, and real-time quality monitoring of navigation messages and reliability improvement of navigation and positioning services were achieved.

CN118962744BActive Publication Date: 2025-09-09NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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Patent Information

Application Number
CN202411080860.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-08
Publication Date
2025-09-09
Estimated Expiration
2044-08-08

AI Technical Summary

Technical Problem

The lack of low-orbit satellite navigation messages affects the continuity and reliability of navigation and positioning services, and the continuity analysis method of low-orbit satellite navigation messages transmitted back by existing monitoring stations is unclear.

Method used

By obtaining the navigation message packets received by multiple monitoring stations, based on the monitoring station identifier, satellite number identifier, message type identifier and reception time identifier, the low-orbit satellite navigation message and its reception time at different frequencies of each monitoring station are determined, the actual and theoretical number of received navigation message packets are calculated, and the continuity of the navigation message is judged.

Benefits of technology

Real-time and continuous monitoring of low-orbit satellite navigation messages is achieved, ensuring the quality of navigation messages and improving the reliability of navigation and positioning services.

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Abstract

The present application discloses a method, device, medium, and product for determining the continuity of low-orbit satellite navigation messages at a monitoring station, which relates to the field of navigation and positioning. The method involves obtaining navigation message packets received by multiple monitoring stations within a preset time and range; determining the low-orbit satellite navigation messages at different frequencies and the corresponding reception times of the low-orbit satellite navigation messages at each monitoring station based on the monitoring station identifier, satellite number identifier, message type identifier, frequency identifier, and reception time identifier according to all navigation message packets; determining the actual number of navigation message packets received and the theoretical number of navigation message packets received at each frequency at each monitoring station based on the reception time and the theoretical broadcast interval of the navigation message; and determining the continuity of the low-orbit satellite navigation messages received by each monitoring station based on the actual number of navigation message packets received and the theoretical number of navigation message packets received at each frequency at each monitoring station. The present application can monitor the continuity of the navigation messages received by each monitoring station in real time.
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