Zehua BU, Bangning MAO, Zhaopeng SI, Huaping GONG, Ben XU, Juan KANG, Yi LI, Chunliu ZHAO. Signal Recognition of φ-OTDR System Based on Wavelet Packet Decomposition and SVM[J]. Acta Photonica Sinica, 2022, 51(11): 1106003
- Acta Photonica Sinica
- Vol. 51, Issue 11, 1106003 (2022)
Fig. 1. φ-OTDR system based on coherent detection
Fig. 2. Three-layer wavelet packet decomposition
Fig. 3. Binary confusion matrix
Fig. 4. Experimental environment
Fig. 5. Location results of three disturbance signals
Fig. 6. Typical time domain waveforms of four different signals
Fig. 7. Typical energy spectrum of three-layer wavelet packet decomposition
Fig. 8. Average energy distribution of four differrent events
Fig. 9. Signal recognition results of SVM
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