Technical Description
The invention introduces a signal processing method which measures the Brillouin frequency shift (BFS) in distributed fiber optic temperature and strain sensors by applying Cross Recurrence Plot Analysis (CRPA) to maintain precision across long distances despite high attenuation and noise.
Problems Addressed
- Coarse Step Errors
- Hidden Physical Shifts
- Low-SNR Algorithm Failure
- Weak Long-Distance Signals
- Neural Network Degradation
Tech Features
- Distributed Fiber Optic Sensing (Strain and Temperature)
- Cross Recurrence Plot Analysis (CRPA) Implementation
- Reference Spectrum Extracted from Initial Fiber Section
- Low Signal-to-Noise Ratio Tolerance (< 10 dB)
- Coarse Frequency Measurement (> 1 MHz)
- Frequency-Delay Embedding and SS-Metric RQA Quantification
Target Audience
- Network Asset Managers
- Infrastructure Safety Inspectors
- Aerospace Diagnostic Engineers
Tech ID: P13-2139 TRL 5 Patent Status: Granted Available For Exclusive and Non-exclusive License
