Rtk resolving method, system and electronic device based on beidou satellite signal

By employing an RTK solution method based on BeiDou satellite signals and a solution strategy combining wide lane constraints and ionosphere-free operation, the problems of ambiguity fixation and error decomposition in single BeiDou mode are solved, achieving high-precision and reliable positioning solution, suitable for centimeter-level real-time positioning in power grid scenarios.

CN122283784APending Publication Date: 2026-06-26GUANGDONG POWER GRID CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUANGDONG POWER GRID CO LTD
Filing Date
2026-04-27
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing network RTK systems struggle to achieve autonomous and controllable ambiguity fixation and error decomposition model optimization in single BeiDou mode. Furthermore, they lack flexible grid correction products in scenarios with significant elevation differences, making it difficult to balance real-time performance and scalability.

Method used

The RTK solution method based on BeiDou satellite signals is adopted. By introducing a solution strategy that combines wide lane constraints and ionosphere-free operation, and combining covariance propagation and LAMBDA integer least squares search algorithm, a complete double-difference observation modeling and ambiguity fixing process is constructed, which supports real-time correction and parallel output of grid products.

Benefits of technology

It improves the success rate and stability of fixing integer ambiguity in narrow alleys, shortens the initialization time, enhances the reliability and accuracy of positioning calculation, and meets the high-precision positioning needs of multiple scenarios.

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Abstract

This application provides an RTK solution method, system, and electronic device based on BeiDou satellite signals. The method acquires BeiDou carrier phase observations and pseudorange observations from multiple reference stations, performs ambiguity resolution based on the double-difference observation equation to obtain a fixed baseline solution for multiple reference stations. Based on the fixed baseline solution, it estimates and outputs the ionospheric delay correction, tropospheric delay correction, and comprehensive error correction including orbital error and multipath effect for each baseline. According to the approximate coordinates of the rover, it uses the inverse distance weighted method with weighted least squares to interpolate all error corrections to the rover's position. It applies a water vapor-scale height exponential decay model to compensate for the height of the interpolated tropospheric wet delay correction, thereby obtaining the corrected tropospheric correction. It generates real-time differential correction data for the rover, realizing a high-precision and scalable BeiDou network RTK service.
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