Highly discriminative and adaptive feature extraction method based on NMF-MFCC for event recognition of Φ-OTDR
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Yn: Applied Optics, Cyfrol 62, Rhif 35, 10.12.2023, t. 9326-9333.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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T1 - Highly discriminative and adaptive feature extraction method based on NMF-MFCC for event recognition of Φ-OTDR
AU - Huang, Yi
AU - Dai, Jingyi
AU - Shen, Wei
AU - Chen, Xiaofeng
AU - Hu, Chengyong
AU - Deng, Chuanlu
AU - Chen, Lin
AU - Zhang, Xiaobei
AU - Jin, Wei
AU - Tang, Jianming
AU - Wang, Tingyun
PY - 2023/12/10
Y1 - 2023/12/10
N2 - To enhance the capability of phase-sensitive optical time domain reflectometers (Φ-OTDR) to recognize disturbance events, an improved adaptive feature extraction method based on NMF-MFCC is proposed, which replaces the fixed filter bank used in the traditional method to extract the mel-frequency cepstral coefficient (MFCC) features by a spectral structure obtained from the Φ-OTDR signal spectrum using nonnegative matrix factorization (NMF). Three typical events on fences are set as recognition targets in our experiments, and the results show that the NMF-MFCC features have higher distinguishability, with the corresponding recognition accuracy reaching 98.47%, which is 7% higher than that using the traditional MFCC features.
AB - To enhance the capability of phase-sensitive optical time domain reflectometers (Φ-OTDR) to recognize disturbance events, an improved adaptive feature extraction method based on NMF-MFCC is proposed, which replaces the fixed filter bank used in the traditional method to extract the mel-frequency cepstral coefficient (MFCC) features by a spectral structure obtained from the Φ-OTDR signal spectrum using nonnegative matrix factorization (NMF). Three typical events on fences are set as recognition targets in our experiments, and the results show that the NMF-MFCC features have higher distinguishability, with the corresponding recognition accuracy reaching 98.47%, which is 7% higher than that using the traditional MFCC features.
U2 - 10.1364/AO.506307
DO - 10.1364/AO.506307
M3 - Article
C2 - 38108704
VL - 62
SP - 9326
EP - 9333
JO - Applied Optics
JF - Applied Optics
SN - 1559-128X
IS - 35
ER -