Author Affiliations
Abstract
1 Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education, Taiyuan University of Technology, Taiyuan, 030024, China
2 College of Physics and Optoelectronics, Institute of Optoelectronic Engineering, Taiyuan University of Technology, Taiyuan, 030024, China
In Raman distributed temperature system, the key factor for performance improvement is noise suppression, which seriously affects the sensing distance and temperature accuracy. Therefore, we propose and experimentally demonstrate dynamic noise difference algorithm and wavelet transform modulus maximum (WTMM) to de-noising Raman anti-Stokes signal. Experimental results show that the sensing distance can increase from 3 km to 11.5 km and the temperature accuracy increases to 1.58 ℃ at the sensing distance of 10.4km.
Optical fiber sensors Raman scattering noise suppression wavelet transform modulus maximum Photonic Sensors
2018, 8(2): 103
