Photonic Sensors, 2018, 8 (2): 103, 网络出版: 2018-08-04
Performance Improvement of Raman Distributed Temperature System by Using Noise Suppression
Performance Improvement of Raman Distributed Temperature System by Using Noise Suppression
摘要
Abstract
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.
Jian LI, Yunting LI, Mingjiang ZHANG, Yi LIU, Jianzhong ZHANG, Baoqiang YAN, Dong WANG, Baoquan JIN. Performance Improvement of Raman Distributed Temperature System by Using Noise Suppression[J]. Photonic Sensors, 2018, 8(2): 103. Jian LI, Yunting LI, Mingjiang ZHANG, Yi LIU, Jianzhong ZHANG, Baoqiang YAN, Dong WANG, Baoquan JIN. Performance Improvement of Raman Distributed Temperature System by Using Noise Suppression[J]. Photonic Sensors, 2018, 8(2): 103.