A water surface high-precision positioning and evaluation method based on marine beidou positioning enhancement

By deploying BeiDou positioning enhancement differential base stations at sea and constructing a satellite-related error correction model, combined with real-time precise single-point and single-point dual-frequency positioning methods, the problem of insufficient positioning accuracy of the BeiDou satellite navigation system was solved, achieving high-precision positioning and relative positioning assessment at sea.

CN116047563BActive Publication Date: 2026-07-24JIANGSU AUTOMATION RESEARCH INSTITUTE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU AUTOMATION RESEARCH INSTITUTE
Filing Date
2022-12-06
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

The positioning accuracy of the existing BeiDou satellite navigation system is insufficient and cannot meet the needs of marine users for high-precision positioning.

Method used

Using real-time precise point positioning (PPP) and single-point dual-frequency high-precision positioning methods, combined with relative positioning of the moving platform, high-precision positioning information is broadcast in real time by deploying BeiDou positioning enhancement differential base stations at sea, and high-precision positioning terminals are set up on the moving platform at sea. Satellite-related error correction models and ionospheric desiccation combined observation equations are constructed to perform high-precision positioning calculations.

Benefits of technology

It achieves high-precision positioning at sea, ranging from centimeters to meters, meeting different precision requirements, and provides a positioning benchmark for underwater users through relative positioning evaluation.

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Abstract

The application discloses a kind of water surface high-precision positioning and evaluation method based on marine Beidou positioning enhancement, first, Beidou positioning enhancement differential base station is laid out, high-precision positioning information after differential solution is broadcasted to marine user in the radiation range of base station in real time, marine Beidou high-precision positioning terminal is set in marine moving platform;Afterwards, according to demand, marine moving platform is positioned with single point high-precision or relative high-precision, finally, marine moving platform is set in the radiation range of Beidou positioning enhancement differential base station, and the positioning data based on the result of single point high-precision positioning and relative high-precision positioning and the positioning data based on Beidou positioning enhancement differential base station terminal are compared, and positioning accuracy evaluation result is obtained.The application can select different positioning method according to actual situation, realizes buoy sub-meter-meters level position solution according to marine Beidou high-precision positioning terminal and real-time kinematic differential measurement base station and terminal, and also provides water surface positioning reference for underwater user positioning.
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