An adaptive map matching optimization method and device fusing road feature information
By using an adaptive map matching method and leveraging inertial trajectory feature monitoring and error feedback mechanisms, the problem of untimely positioning errors in existing map matching algorithms in both feature-rich and feature-poor scenarios is solved, thereby improving the accuracy of inertial autonomous positioning.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF SPACE LAUNCH TECH
- Filing Date
- 2023-11-24
- Publication Date
- 2026-06-02
AI Technical Summary
Existing map matching algorithms suffer from problems such as untimely or missed positioning error correction in both road feature-poor and rich scene scenarios, resulting in insufficient accuracy of inertial autonomous positioning.
An adaptive map matching method is adopted. By monitoring the curvature characteristics of the inertial trajectory, it is determined whether the criteria are met, and the line matching algorithm is corrected. The positioning error is corrected by using road feature information. Combined with the error feedback mechanism of the inertial device, adaptive adjustment is achieved.
It improves the positioning accuracy of map matching devices, especially in feature-rich road sections where the positioning error correction effect is significant, thus significantly improving the accuracy of navigation and positioning.
Smart Images
Figure CN117664113B_ABST