Characterization of the optical encoder angular noise from terrestrial laser scanners

authored by

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.

Organisation(s)

Geodetic Institute
QuantumFrontiers

Type

Article

Journal

Optics express

Volume

29

Pages

17011-17022

No. of pages

12

ISSN

1094-4087

Publication date

24.05.2021

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

Electronic version(s)

https://doi.org/10.1364/OE.422735 (Access: Open)