An Ultra-Wideband Handover System for GPS-Free Bridge Inspection Using Drones

This study proposes an ultra-wideband (UWB) handover system that increases the range of UWB positioning for bridge inspection using an unmanned aerial vehicle (UAV). A bipartite graph and a greedy algorithm are used, and the problem is transformed into vertex coloring to address the challenge of a l...

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Bibliographic Details
Published inSensors (Basel, Switzerland) Vol. 25; no. 6; p. 1923
Main Authors Wang, Ping-Hsiang, Wu, Ruey-Beei
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 19.03.2025
MDPI
Subjects
Accuracy
Algorithms
bipartite graph
Bridges
Drone aircraft
Energy conservation
greedy algorithm
Ground stations
handover system
Inspection
Inspections
Localization
Propagation
UAV
ultra-wideband (UWB)
vertex coloring
internet of things
handover system
UAV
bipartite graph
greedy algorithm
ultra-wideband (UWB)
vertex coloring
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Summary:This study proposes an ultra-wideband (UWB) handover system that increases the range of UWB positioning for bridge inspection using an unmanned aerial vehicle (UAV). A bipartite graph and a greedy algorithm are used, and the problem is transformed into vertex coloring to address the challenge of a large number of anchors and insufficient anchor IDs because the area is long and there are numerous beams and columns under the bridge. Simulation and experiment show that the solution reduces the number of anchors that are required from 27 to 14, which significantly saves deployment costs and reduces power consumption.
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ISSN:1424-8220
1424-8220
DOI:10.3390/s25061923