2017-Noise level estimation of BOTDA for optimal non-local means denoising

2018-12-07 Hits:

Teaching and Research Group:光纤传感与器件

Journal:Applied Optics

Key Words:Optical sensing and sensors;Scattering, stimulated Brillouin; Optical amplifiers

Abstract:Due to the similarity of Brillouin optical time domain analyzer (BOTDA) signals, image denoising could be utilized to remove the noise. However, the performance can be much degraded due to inaccurate noise level estimation. By numerical and experimental study, we compare the noise level estimation of three different methods for BOTDA: calculating the standard deviation (STD) of the measurements, a filter-based estimation algorithm, and a patch-based estimation algorithm proposed in this paper, which selects weak textured patches of BOTDA signal and then estimates noise level using principal...

All the Authors:Han Wu, Qiheng He, Wei Sun, Naitian Xue, Bin Zhang, Zinan Wang, Xinhong Jia,Xianyang Qian

First Author:Xianyang Qian

Indexed by:Unit Twenty Basic Research

Correspondence Author:Zinan Wang

Discipline:Engineering

First-Level Discipline:Optical engineering

Volume:56

Issue:16

Page Number:Applied Optics 56, 4727-4734

Translation or Not:no

Date of Publication:2017-06-01

Date of Publication:2017-06-01