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Characterization of the optical encoder angular noise from terrestrial laser scanners

verfasst von
Gaël Kermarrec, Jens Hartmann
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.

Organisationseinheit(en)
Geodätisches Institut
QuantumFrontiers
Typ
Artikel
Journal
Optics express
Band
29
Seiten
17011-17022
Anzahl der Seiten
12
ISSN
1094-4087
Publikationsdatum
24.05.2021
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Atom- und Molekularphysik sowie Optik
Elektronische Version(en)
https://doi.org/10.1364/OE.422735 (Zugang: Offen)
 

Details im Forschungsportal „Research@Leibniz University“