Hybrid Feature Extraction of Pipeline Microstates Based on Φ-OTDR Sensing System

Figure 7

Hybrid feature distribution of four microstates. (a) Hybrid features of 0.2–0.1 MPa. (b) Hybrid features of 0.3–0.2 MPa. (c) Hybrid features of 0.4–0.3 MPa. (d) Hybrid features of 0.5–0.4 MPa.

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