Characterization of the optical encoder angular noise from terrestrial laser scanners

Gaël Kermarrec; Jens Hartmann

doi:10.1364/OE.422735

Characterization of the optical encoder angular noise from terrestrial laser scanners

Gaël Kermarrec^*, Jens Hartmann

^*Corresponding author for this work

Research output: Contribution to journal › Article › Research › peer review

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.

Original language	English
Pages (from-to)	17011-17022
Number of pages	12
Journal	Optics express
Volume	29
Issue number	11
E-pub ahead of print	18 May 2021
DOIs	https://doi.org/10.1364/OE.422735
Publication status	Published - 24 May 2021

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.422735Licence: Other

Cite this

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title = "Characterization of the optical encoder angular noise from terrestrial laser scanners",

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{\textquoteright} 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.",

author = "Ga{\"e}l Kermarrec and Jens Hartmann",

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Characterization of the optical encoder angular noise from terrestrial laser scanners

Abstract

ASJC Scopus subject areas

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QuantumFrontiers: Cluster of Excellence 2123/1: Light and Matter at the Quantum Frontier

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Characterization of the optical encoder angular noise from terrestrial laser scanners

Abstract

ASJC Scopus subject areas

Access to Document

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Projects

QuantumFrontiers: Cluster of Excellence 2123/1: Light and Matter at the Quantum Frontier

Cite this