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Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 7, Issue 4, Pages 1,595-1,612, DOI: https://doi.org/10.21307/ijssis-2017-722
License : (CC BY-NC-ND 4.0)
Received Date : 15-July-2014 / Accepted: 30-October-2014 / Published Online: 01-December-2014
In this paper the working principle and application status of distributed optical fiber
temperature sensor, amplified spontaneous Raman scattering phenomenon and its time-domain
characteristics are analyzed. A new measuring principle based on amplified spontaneous Raman
scattering light pulse signal temperature effect is presented, and is applied to distributed optical fiber
sensor systems. Noise inevitably exists in data collected by distributed optical fiber temperature sensing
systems. According to the needs of high-temperature oil well testing, distributed high temperature
single-mode fiber sensors and detection equipment are designed, and gives two-dimensional data of oil
well temperature testing. Because of the weak Raman backwards scattered signal and serious noise
disturbance, multi-resolution wavelet analysis and reconstruction method are adopted for the denoising
of testing signal.
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