Method, system and storage medium for fast fixing ambiguity between reference stations

By generating a Delaunay triangulation between reference stations and using geometric constraints and the Kalman filter method, the integer ambiguity between reference stations can be quickly fixed, solving the problem of low solution efficiency in existing technologies and improving the real-time and reliability of positioning.

CN114509797BActive Publication Date: 2025-09-05NAT AUTOMOBILE UNIV SPACE-TIME TECH (ANQING) CO LTD
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Patent Information

Application Number
CN202210137169.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-15
Publication Date
2025-09-05
Estimated Expiration
2042-02-15

AI Technical Summary

Technical Problem

The existing technology only considers the baseline relationship between two reference stations when resolving ambiguity between reference stations. The resolution efficiency still has a lot of room for improvement, which affects the real-time and reliability of terminal mobile user positioning.

Method used

By utilizing the geometric constraints between reference stations and the solved baseline information, a Delaunay triangulation is generated, and a double-difference observation equation is constructed. Combined with the Kalman filter and the LAMBDA method, the integer ambiguity between reference stations can be quickly fixed.

Benefits of technology

The efficiency of resolving ambiguity between reference stations is improved, ensuring the real-time, reliability and effectiveness of terminal mobile user positioning.

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Abstract

The present invention discloses a method, system, and storage medium for rapidly fixing ambiguities between reference stations. When the baseline to be resolved has geometric constraints and information about other baselines, the integer ambiguities for that baseline are obtained using these constraints. If these constraints do not exist, the integer ambiguities for that baseline are resolved using conventional resolution methods. This technical solution, utilizing geometric constraints between baselines and resolved baseline information, can rapidly fix ambiguities between reference stations, improving resolution efficiency and ensuring the real-time, reliable, and effective positioning of mobile users.
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