一种融合定位系统在GNSS无效时位置误差计算方法及系统
By acquiring GNSS and VCU information, calculating the GNSS lock-out time period and corresponding distance, the problem of blind spots in the position error calculation of the fusion positioning system when GNSS lock-out occurs is solved, and a comprehensive evaluation of the performance of the fusion positioning system is realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN ZHONGHAITING DATA TECH CO LTD
- Filing Date
- 2023-11-14
- Publication Date
- 2026-07-17
AI Technical Summary
In intelligent driving systems, when GNSS lock is lost, the position error calculation of the fusion positioning system is in a blind spot, leading to inaccurate system performance evaluation in customer applications.
By acquiring GNSS information, VCU information, and positioning information output by the fusion positioning system under test during the road test, and using the VCU information and GNSS status of the vehicle body with local stability, the time period and corresponding distance of the most recent GNSS lockout and effective duration are calculated to determine whether the position error assessment conditions are met, and the positioning error is calculated.
It enables position error assessment of the fusion positioning system under GNSS lock-off conditions, assists customers in comprehensively evaluating the performance of the positioning module, and improves the accuracy of system assessment.
Smart Images
Figure CN117805875B_ABST