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. 2024 Oct 30;24(21):6967. doi: 10.3390/s24216967

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© 2024 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Illustration of measurement method using proximity sensor (S) positioned at $p_{s e} (= O)$ . (a) Location of a sensor and measurement parameters; (b) Computations by pairs of distances and angles.