一种海底管道监测用SAS高频信号实时处理系统及方法
By constructing a frequency domain complex coherence spectrum and generating frequency domain weights, the SAS high-frequency signal real-time processing system solves the problem of severe imaging artifacts in synthetic aperture sonar under microbubble plume interference, and realizes highly reliable monitoring of subsea pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH (SHENYANG) INTELLIGENT IND TECH CO LTD
- Filing Date
- 2026-03-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing synthetic aperture sonar suffers from severe imaging artifacts and a high false alarm rate for pipeline anomaly interpretation due to frequency domain complex coherence collapse caused by microbubble plume interference, which cannot meet the high reliability requirements for monitoring micro-leakage in subsea pipelines in complex marine environments.
The SAS high-frequency signal real-time processing system is used to construct a frequency domain complex coherence spectrum, determine the complex coherence collapse gap frequency band, generate frequency domain weights, and perform weighted range compression and coherent focusing. Combined with navigation attitude data, an imaging intensity map is generated, and the gap contamination index is calculated to constrain the pipeline anomaly score.
It effectively eliminates the strip-like artifacts and local defocusing caused by bubble resonance, improves imaging clarity and pipeline boundary continuity, reduces false alarm rate, and enhances the reliability and effectiveness of subsea pipeline inspection data.
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Figure CN121805969B_ABST
Abstract
Citation Information
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