Research and Software Design of an Φ-OTDR-Based Optical Fiber Vibration Recognition Algorithm

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Features</td><td class="align_center">Nonintrusion</td><td class="align_center">Tapping</td><td class="align_center">Climbing</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Short-term energy</td><td class="align_center">1.7 × 10<sup>7</sup></td><td class="align_center">9.8 × 10<sup>8</sup></td><td class="align_center">1.9 × 10<sup>9</sup></td></tr><tr><td class="align_left">Short-term threshold rate</td><td class="align_center">5</td><td class="align_center">341</td><td class="align_center">751</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Time-domain characteristics of a frame fiber vibration signal.</div>

Journal of Electrical and Computer Engineering

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Table 2

Table 2: Research and Software Design of an Φ-OTDR-Based Optical Fiber Vibration Recognition Algorithm 