Characterization of the optical encoder angular noise from terrestrial laser scanners

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OriginalspracheEnglisch
Seiten (von - bis)17011-17022
Seitenumfang12
FachzeitschriftOptics express
Jahrgang29
Ausgabenummer11
Frühes Online-Datum18 Mai 2021
PublikationsstatusVeröffentlicht - 24 Mai 2021

Abstract

Rigorous statistical testing of deformation using a terrestrial laser scanner (TLS) can avoid events such as structure collapses. Such a procedure necessitates an accurate description of the TLS measurements’ noise, which should include the correlations between angles. Unfortunately, these correlations are often unaccounted for due to a lack of knowledge. This contribution addresses this challenge. We combine (i) a least-square approximation to extract the geometry of the TLS point cloud with the aim to analyze the residuals of the fitting and (ii) a specific filtering coupled with a maximum likelihood estimation to quantify the amount of flicker noise versus white noise. This allows us to set up fully populated variance covariance matrices of the TLS noise as a result.

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Characterization of the optical encoder angular noise from terrestrial laser scanners. / Kermarrec, Gaël; Hartmann, Jens.
in: Optics express, Jahrgang 29, Nr. 11, 24.05.2021, S. 17011-17022.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Kermarrec G, Hartmann J. Characterization of the optical encoder angular noise from terrestrial laser scanners. Optics express. 2021 Mai 24;29(11):17011-17022. Epub 2021 Mai 18. doi: 10.1364/OE.422735
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