Single-target vision-assisted Beidou observation station coordinate monitoring method

The single-target visual-assisted BeiDou positioning method solves the problem of reduced positioning accuracy caused by satellite signal blockage through real-time monitoring and coordinate fusion, and achieves high-precision, continuous displacement monitoring, making it suitable for rapid deployment in complex environments.

CN121763335APending Publication Date: 2026-03-31SOUTH SURVEYING & MAPPING INSTR
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Patent Information

Application Number
CN202511858456.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-10
Publication Date
2026-03-31

AI Technical Summary

Technical Problem

In complex environments, satellite signal blockage or multipath effects can lead to a decrease in BeiDou positioning accuracy. Existing multi-target visual-assisted positioning methods are complex to install, costly, and have poor robustness, making it difficult to achieve continuous and high-precision displacement monitoring.

Method used

The single-target visual-assisted BeiDou positioning method is adopted. By acquiring the initial BeiDou coordinates of the station and the initial pixel coordinates of the target, the current pixel coordinates and BeiDou coordinates of the target are monitored in real time. Based on visual displacement and preset azimuth angle, the northeast coordinates are corrected and fused, and the current northeast celestial coordinates of the station are output.

Benefits of technology

It improves the monitoring accuracy and continuity in environments where BeiDou signals are blocked, simplifies the deployment process, reduces costs, enhances robustness, and is suitable for rapid installation and temporary monitoring scenarios.

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Abstract

The invention provides a single-target vision-assisted Beidou observation station coordinate monitoring method, which comprises the following steps of: firstly, acquiring initial coordinates of an observation station and a target, and performing coordinate conversion to obtain initial east-north-sky coordinates of the observation station; in real-time monitoring, the current pixel coordinates of the target and the current Beidou coordinates of the observation station are collected, the visual displacement is obtained by comparing the current pixel coordinates and the initial pixel coordinates of the target, northeast coordinate correction is carried out by combining a preset visual azimuth angle, and the visual northeast displacement of the target is obtained. And then performing visual estimation based on the displacement and the initial east-north-sky coordinates of the observation station to obtain the current visual east-north-sky coordinates of the observation station. And finally, fusing with the current Beidou coordinate of the observation station, and outputting the current northeast-east-sky coordinate of the observation station. According to the single-target vision-assisted Beidou observation station coordinate monitoring method provided by the invention, Beidou positioning is assisted based on single-target vision, the monitoring precision and continuity in an environment in which Beidou signals are shielded or interfered are improved, and stable and reliable displacement monitoring capability is maintained in a complex environment.
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