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Bluetooth Phased-array Aided Inertial Navigation Using Factor Graphs: Experimental Verification

2026-02-19 14:34:04
Glen Hjelmerud M{\o}rkbak S{\o}rensen, Torleiv H. Bryne, Kristoffer Gryte, Tor Arne Johansen
arXiv_RO
     
Abstract

Phased-array Bluetooth systems have emerged as a low-cost alternative for performing aided inertial navigation in GNSS-denied use cases such as warehouse logistics, drone landings, and autonomous docking. Basing a navigation system off of commercial-off-the-shelf components may reduce the barrier of entry for phased-array radio navigation systems, albeit at the cost of significantly noisier measurements and relatively short feasible range. In this paper, we compare robust estimation strategies for a factor graph optimisation-based estimator using experimental data collected from multirotor drone flight. We evaluate performance in loss-of-GNSS scenarios when aided by Bluetooth angular measurements, as well as range or barometric pressure.

Abstract (translated)

URL

https://arxiv.org/abs/2602.17407

PDF

https://arxiv.org/pdf/2602.17407.pdf

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