Photonic Sensors, 2018, 8 (2): 114, 网络出版: 2018-08-04
Brillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation
Brillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation
Brillouin optical time-domain reflectometry (BOTDR auto-regressive (AR) model spectral estimation distributed fiber-optic sensing
摘要
Abstract
Auto-regressive (AR) spectral estimation technology is proposed to analyze the Brillouin scattering spectrum in Brillouin optical time-domain refelectometry. It shows that AR based method can reliably estimate the Brillouin frequency shift with an accuracy much better than fast Fourier transform (FFT) based methods provided the data length is not too short. It enables about 3 times improvement over FFT at a moderate spatial resolution.
Mengyun HUANG, Wei LI, Zhangyun LIU, Linghao CHENG, Bai-Ou GUAN. Brillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation[J]. Photonic Sensors, 2018, 8(2): 114. Mengyun HUANG, Wei LI, Zhangyun LIU, Linghao CHENG, Bai-Ou GUAN. Brillouin Scattering Spectrum Analysis Based on Auto-Regressive Spectral Estimation[J]. Photonic Sensors, 2018, 8(2): 114.