The Dynamic Displacement Monitoring Method Using Unmanned Aerial Vehicles Based on Digital Close-Range Photogrammetry

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">CMOS size</td><td class="align_center">1 inch</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Video resolution</td><td class="align_center">3840 × 2160 30 fps</td></tr><tr><td class="align_left">Focal length</td><td class="align_center">8.8 mm</td></tr><tr><td class="align_left">Aperture</td><td class="align_center">f/2.8–f/11</td></tr><tr><td class="align_left">Focus distance</td><td class="align_center">1 m∼∞</td></tr><tr><td class="align_left">Angular jitter</td><td class="align_center">±0.02°</td></tr><tr><td class="align_left" rowspan="2">Hover precision (Visual positioning works)</td><td class="align_center">Vertical: ±0.1 m</td></tr><tr><td class="align_left">Horizontal: ±0.3 m</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Parameters of the DJI phantom 4 pro [<a href="/journals/mpe/2022/1949213/#B15" target="_blank">15</a>].</div>

Mathematical Problems in Engineering

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Table 1

Table 1: The Dynamic Displacement Monitoring Method Using Unmanned Aerial Vehicles Based on Digital Close-Range Photogrammetry 