Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.

Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.

Robotic total stations have been widely used in continuous automatic monitoring of dam deformations. In this regard, monitoring accuracy is an important factor affecting deformation analysis. First the displacements calculation methods for dam deformation monitoring with total stations are presented...

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Autores principales: Jianguo Zhou, Bo Shi, Guanlan Liu, Shujun Ju
Formato: article
Lenguaje:EN
Publicado: Public Library of Science (PLoS) 2021
Materias:
Medicine
R
Science
Q
Acceso en línea:https://doaj.org/article/e8eceee82024402e9aac0bdf9d1eeebb
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spelling oai:doaj.org-article:e8eceee82024402e9aac0bdf9d1eeebb2021-11-25T06:19:19ZAccuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.1932-620310.1371/journal.pone.0251281https://doaj.org/article/e8eceee82024402e9aac0bdf9d1eeebb2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0251281https://doaj.org/toc/1932-6203Robotic total stations have been widely used in continuous automatic monitoring of dam deformations. In this regard, monitoring accuracy is an important factor affecting deformation analysis. First the displacements calculation methods for dam deformation monitoring with total stations are presented, and the corresponding mean square error formulas are derived. Then for errors caused by atmospheric refraction, two correction methods are described. Simulations were conducted to compare the displacement accuracy calculated through different methods. It indicated that the difference between polar coordinate method and forward intersection is less than 0.5mm within around 400m' monitoring range, and in such cases, the polar coordinate method is preferred, as only one total station is required. Refraction correction tests with observations from two dams demonstrated that both correction methods could effectively enhance the monitoring accuracy. For observation correction, correction through the closest reference point achieves better correction results.Jianguo ZhouBo ShiGuanlan LiuShujun JuPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 5, p e0251281 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Jianguo Zhou
Bo Shi
Guanlan Liu
Shujun Ju
Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
description Robotic total stations have been widely used in continuous automatic monitoring of dam deformations. In this regard, monitoring accuracy is an important factor affecting deformation analysis. First the displacements calculation methods for dam deformation monitoring with total stations are presented, and the corresponding mean square error formulas are derived. Then for errors caused by atmospheric refraction, two correction methods are described. Simulations were conducted to compare the displacement accuracy calculated through different methods. It indicated that the difference between polar coordinate method and forward intersection is less than 0.5mm within around 400m' monitoring range, and in such cases, the polar coordinate method is preferred, as only one total station is required. Refraction correction tests with observations from two dams demonstrated that both correction methods could effectively enhance the monitoring accuracy. For observation correction, correction through the closest reference point achieves better correction results.
format article
author Jianguo Zhou
Bo Shi
Guanlan Liu
Shujun Ju
author_facet Jianguo Zhou
Bo Shi
Guanlan Liu
Shujun Ju
author_sort Jianguo Zhou
title Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
title_short Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
title_full Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
title_fullStr Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
title_full_unstemmed Accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
title_sort accuracy analysis of dam deformation monitoring and correction of refraction with robotic total station.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/e8eceee82024402e9aac0bdf9d1eeebb
work_keys_str_mv AT jianguozhou accuracyanalysisofdamdeformationmonitoringandcorrectionofrefractionwithrobotictotalstation
AT boshi accuracyanalysisofdamdeformationmonitoringandcorrectionofrefractionwithrobotictotalstation
AT guanlanliu accuracyanalysisofdamdeformationmonitoringandcorrectionofrefractionwithrobotictotalstation
AT shujunju accuracyanalysisofdamdeformationmonitoringandcorrectionofrefractionwithrobotictotalstation
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