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
Fersiynau electronig
Dogfennau
Dangosydd eitem ddigidol (DOI)
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.
| Iaith wreiddiol | Saesneg |
|---|---|
| Tudalennau (o-i) | 9326-9333 |
| Nifer y tudalennau | 8 |
| Cyfnodolyn | Applied Optics |
| Cyfrol | 62 |
| Rhif y cyfnodolyn | 35 |
| Dyddiad ar-lein cynnar | 2 Rhag 2023 |
| Dynodwyr Gwrthrych Digidol (DOIs) | |
| Statws | Cyhoeddwyd - 10 Rhag 2023 |