Hybrid Pulse-Compression φ-OTDR and Forward Vibration Sensing using Residual Carrier Modulation

Keyphrases

• Pulse Compression 100%
• Rayleigh Backscattering 100%
• Vibration Sensing 100%
• Residual Carrier 100%
• Carrier Modulation 100%
• Single Fiber 75%
• High-frequency Vibration 75%
• Backscattered Signal 75%
• Fiber Architecture 50%
• Transceiver 50%
• Vibration Detection 50%
• Interferometric Signal 50%
• Interferometer 25%
• Sensing Scheme 25%
• Demodulation 25%
• Signal Enhancement 25%
• Sensing System 25%
• Frequency Response 25%
• Fiber Interferometer 25%
• Long Distance 25%
• Joint Analysis 25%
• Reduced System 25%
• Fully Distributed 25%
• Negative Frequency 25%
• System Complexity 25%
• Interferometric Demodulation 25%
• System Capability 25%
• Distributed Vibration Sensing 25%
• Long-reach 25%
• Reflectometry 25%
• Positive-negative 25%
• Effective Detection 25%
• Kilometer-scale 25%
• Frequency Demodulation 25%

Engineering

• Rayleigh Backscattering 100%
• Pulse Compression 100%
• Frequency Vibration 75%
• Single Fibre Efficiency 75%
• Demodulation 75%
• Transceiver 50%
• Interferometer 50%
• Experimental Result 25%
• Sensing System 25%
• Joints (Structural Components) 25%
• Negative Frequency 25%
• Frequency Response 25%

Physics

• Backscattering 100%
• Interferometer 50%