一种基于双窗锁相融合的钢质管道内目标定位方法
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2026-04-28
- Publication Date
- 2026-07-17
AI Technical Summary
In steel oil and gas pipelines, magnetic signal detection and positioning are affected by magnetic field shielding and noise interference, making it difficult for existing technologies to achieve automatic detection and positioning, especially when the receiver is in motion.
A dual-window phase-locked fusion method is adopted, which uses short-time window and long-time window sliding window phase-locked detection, combined with receiver motion information, to perform signal preprocessing and local background adaptive threshold filtering, thereby realizing automatic detection and positioning of target signals.
This invention suppresses false alarms due to noise in a steel pipe shielded environment, enabling real-time detection and positioning of target signals, and outputting the target position and relative distance. It is suitable for mobile receiving scenarios and improves the reliability and response efficiency of detection.
Smart Images
Figure CN122244162B_ABST