Details
| Original language | English |
|---|---|
| Pages (from-to) | 17011-17022 |
| Number of pages | 12 |
| Journal | Optics express |
| Volume | 29 |
| Issue number | 11 |
| Early online date | 18 May 2021 |
| Publication status | Published - 24 May 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.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
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In: Optics express, Vol. 29, No. 11, 24.05.2021, p. 17011-17022.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Characterization of the optical encoder angular noise from terrestrial laser scanners
AU - Kermarrec, Gaël
AU - Hartmann, Jens
N1 - Funding Information: Acknowledgments. The authors warmly thank Kamiel-Karl Heidberg for having performed the measurements. The publication of this article was funded by the Open Access fund of Leibniz Universität Hannover.
PY - 2021/5/24
Y1 - 2021/5/24
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85106045384&partnerID=8YFLogxK
U2 - 10.1364/OE.422735
DO - 10.1364/OE.422735
M3 - Article
AN - SCOPUS:85106045384
VL - 29
SP - 17011
EP - 17022
JO - Optics express
JF - Optics express
SN - 1094-4087
IS - 11
ER -