Time and Frequency Localized Pulse Shape for Resolution Enhancement in STFT-BOTDR

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left"> </td><td class="align_center">Rectangular</td><td class="align_center">Lorentzian</td><td class="align_center">Gaussian</td><td class="align_center">Triangular</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">TEW (ns)</td><td class="align_center">33.2</td><td class="align_center">80.2</td><td class="align_center">41</td><td class="align_center">42.1</td></tr><tr><td class="align_left">Physical spatial resolution (m)</td><td class="align_center">3.32</td><td class="align_center">8.02</td><td class="align_center">4.1</td><td class="align_center">4.21</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Effective pulse width and the corresponding effective spatial resolution for the four pulse shapes.

Journal of Sensors

tab3

Table 3

Table 3: Time and Frequency Localized Pulse Shape for Resolution Enhancement in STFT-BOTDR 