Three-dimensional water tank coordinate self-calibration method based on multi-station closed net residual constraint
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- RUIDI OOKANG (QINGDAO) TECHNOLOGY CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for detecting the positioning accuracy of three-dimensional water tanks lack a spatial measurement network with closed constraints, making it impossible to achieve self-consistent verification and separation of errors. Furthermore, they lack a feedback correction mechanism based on residual constraints, resulting in insufficient positioning accuracy and inaccurate measurement results.
By employing a multi-station closed-network residual constraint method, a spatial measurement network is constructed by collecting multi-station observation data of target points under empty and water-filled conditions. The closed residual is calculated, a mechanical error direction function model is established, a low-order path disturbance model is constructed, and differential processing and iterative updates are performed to achieve coordinate self-calibration.
It improves error separation capability and calibration process stability, realizes coordinate self-consistent convergence calibration without external reference, and enhances the positioning accuracy of the three-dimensional water tank and the accuracy of measurement results.
Smart Images
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