Abstract
This paper presents a multi-model localization framework for tethered drones. The framework is composed of three independent localization strategies, each one relying in a different model. The first strategy uses simple trigonometric relations assuming that the tether is taut; the second method relies on a set of catenary equations for the case when there is slack on the tether; the third estimator is a neural network-based predictor that can cover different tether shapes. Multi-layer perceptron networks previously trained with a dataset comprised of the tether variables (i.e., length, tether angles on the drone and on the ground) as inputs are used to select which model instantaneously provides the best results. Those networks are also able to identify situations where tether localization is not possible, thus rejecting all estimates. We evaluate our methodology using an in-house built tethering system, which is also described in this paper. Our experimental results have shown that the proposed localization framework consistently selects good solutions from the three estimators and rejects them when the input tether variables suggest bad estimation results.
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Code and Data Availability
The dataset used in this study is available from the corresponding author upon a justified request. Codes are not available.
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Acknowledgements
This study was sponsored by Alpha Foundation for the Improvement of Mine Safety and Health, Inc. (ALPHA FOUNDATION). The views, opinions and recommendations expressed herein are solely those of the authors and do not imply any endorsement by the ALPHA FOUNDATION, its Directors and staff.
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This work was supported by the Alpha Foundation for the Improvement of Mine Safety and Health, Inc. (ALPHA FOUNDATION).
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Both authors contributed to the study, especially in the conceptualization and methodology. Rogerio Lima conducted the technical work by designing, assembling, and integrating the hardware. He also programmed the embedded systems and the scripts for data processing. Guilherme Pereira was responsible for funding acquisition, project administration, and work supervision. Both authors worked together on the experiments presented in the manuscript. Both authors also read and approved the final manuscript.
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Lima, R.R., Pereira, G.A.S. A Multi-model Framework for Tether-based Drone Localization. J Intell Robot Syst 108, 20 (2023). https://doi.org/10.1007/s10846-023-01851-0
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DOI: https://doi.org/10.1007/s10846-023-01851-0