Enhancement of Signal-to-noise Ratio Based on Multiplication Function for Phi-OTDR

作     者：Li, Meng Xiong, Xinglong Zhao, Yifei Ma, Yuzhao 

作者机构：Civil Aviat Univ China Key Lab Operat Programming & Safety Technol Air T Tianjin 300300 Peoples R China Civil Aviat Univ China Tianjin Key Lab Adv Signal Proc Tianjin 300300 Peoples R China Tianjin Univ Coll Precis Instrument & Optoelect Engn Tianjin 300072 Peoples R China 

出 版 物：《CURRENT OPTICS AND PHOTONICS》 (Curr. Opt. Photonics)

年 卷 期：2018年第2卷第5期

页      面：413-421页

核心收录：

基　　金：National Natural Science Foundation of China [U1533113] air traffic management research institute [KGYJY2018002] Fundamental Research Funds for the Central Universities [3122018D029] 

主　　题：phi optical time domain reflectometer system extreme-mean complementary empirical mode decomposition signal-to-noise ratio 

摘      要：We propose a novel methodology based on the multiplication function to improve the signal-to-noise ratio (SNR) for vibration detection in a phi optical time-domain reflectometer system (phi-OTDR). The extreme-mean complementary empirical mode decomposition (ECEMD) is designed to break down the original signal into a set of inherent mode functions (IAFs). The multiplication function in terms of selected IMFs is used to determine a vibration s position. By this method, the SNR of a phi-OTDR system is enhanced by several orders of magnitude. Simulations and experiments applying the method to real data prove the validity of the proposed approach.