Distributed Optical Fiber Temperature Measurement System Assisted By Rayleigh Scattering
In order to improve the performance of the single mode fiber based distributed optical fiber Raman temperature measurement system based on the Rayleigh scattering signal and anti-Stokes signal intensity ratio of duplex demodulation scheme,a Rayleigh scatter-ing assisted distributed optical fiber temperature measuring system is designed,and on the basis of the cumulative average denoising al-gorithm,using the wavelet threshold de-noising algorithm,the system performance is effectively improved.The experimental results show that the temperature measurement accuracy of the system can reach±1.0℃on 10.5 km single-mode fiber,and the multi-point heating experiment is realized,which can meet the needs of practical engineering applications.
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