Postprocessing synchronization of a laser scanning system aboard a UAV
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.14358/PERS.85.10.753 http://hdl.handle.net/11449/199592 |
Resumo: | Synchronization of airborne laser scanning devices is a critical process that directly affects data accuracy. This process can be more challenging with low-cost airborne laser scanning (ALS) systems because some device connections from off-the-shelf sensors are less stable. An alternative to synchronization is performing a postprocessing clock correction. This article presents a technique for postprocessing synchronization (off-line) that estimates clock differences based on the correlation between the signals from the global navigation satellite system (GNSS) trajectory and the light detection and ranging (lidar) range, followed by refinement with a least-squares method. The correlation between signals was automatically estimated considering the planned flight maneuvers, in a flat terrain, to produce altimetric trajectory variations. Experiments were performed with an Ibeo LUX laser unit integrated with a No-vAtel SPAN-IGM-S1 inertial navigation system that was transported by an unmanned aerial vehicle (UAV). The planimetric and altimetric accuracies of the point cloud obtained with the proposed postprocessing synchronization technique were 28 cm and 10 cm, respectively, at a flight height of 35 m. |
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Repositório Institucional da UNESP |
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spelling |
Postprocessing synchronization of a laser scanning system aboard a UAVSynchronization of airborne laser scanning devices is a critical process that directly affects data accuracy. This process can be more challenging with low-cost airborne laser scanning (ALS) systems because some device connections from off-the-shelf sensors are less stable. An alternative to synchronization is performing a postprocessing clock correction. This article presents a technique for postprocessing synchronization (off-line) that estimates clock differences based on the correlation between the signals from the global navigation satellite system (GNSS) trajectory and the light detection and ranging (lidar) range, followed by refinement with a least-squares method. The correlation between signals was automatically estimated considering the planned flight maneuvers, in a flat terrain, to produce altimetric trajectory variations. Experiments were performed with an Ibeo LUX laser unit integrated with a No-vAtel SPAN-IGM-S1 inertial navigation system that was transported by an unmanned aerial vehicle (UAV). The planimetric and altimetric accuracies of the point cloud obtained with the proposed postprocessing synchronization technique were 28 cm and 10 cm, respectively, at a flight height of 35 m.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)São Paulo State University (UNESP) School of Technology and Sciences Department of CartographyBrazilian Institute of Geography and Statistics (IBGE) Geodesy and Cartography Division (GGC)São Paulo State University (UNESP) School of Technology and Sciences Department of CartographyCAPES: 1481339CNPq: 155739/2018-2CAPES: 1774533FAPESP: 2013/50426-4Universidade Estadual Paulista (Unesp)Geodesy and Cartography Division (GGC)Machado, Marcela Do Valle [UNESP]Tommaselli, Antonio Maria Garcia [UNESP]Torres, Fernanda Magri [UNESP]Campos, Mariana Batista [UNESP]2020-12-12T01:44:03Z2020-12-12T01:44:03Z2019-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article753-763http://dx.doi.org/10.14358/PERS.85.10.753Photogrammetric Engineering and Remote Sensing, v. 85, n. 10, p. 753-763, 2019.0099-1112http://hdl.handle.net/11449/19959210.14358/PERS.85.10.7532-s2.0-85074394062Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPhotogrammetric Engineering and Remote Sensinginfo:eu-repo/semantics/openAccess2021-10-23T08:25:07Zoai:repositorio.unesp.br:11449/199592Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T08:25:07Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Postprocessing synchronization of a laser scanning system aboard a UAV |
title |
Postprocessing synchronization of a laser scanning system aboard a UAV |
spellingShingle |
Postprocessing synchronization of a laser scanning system aboard a UAV Machado, Marcela Do Valle [UNESP] |
title_short |
Postprocessing synchronization of a laser scanning system aboard a UAV |
title_full |
Postprocessing synchronization of a laser scanning system aboard a UAV |
title_fullStr |
Postprocessing synchronization of a laser scanning system aboard a UAV |
title_full_unstemmed |
Postprocessing synchronization of a laser scanning system aboard a UAV |
title_sort |
Postprocessing synchronization of a laser scanning system aboard a UAV |
author |
Machado, Marcela Do Valle [UNESP] |
author_facet |
Machado, Marcela Do Valle [UNESP] Tommaselli, Antonio Maria Garcia [UNESP] Torres, Fernanda Magri [UNESP] Campos, Mariana Batista [UNESP] |
author_role |
author |
author2 |
Tommaselli, Antonio Maria Garcia [UNESP] Torres, Fernanda Magri [UNESP] Campos, Mariana Batista [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Geodesy and Cartography Division (GGC) |
dc.contributor.author.fl_str_mv |
Machado, Marcela Do Valle [UNESP] Tommaselli, Antonio Maria Garcia [UNESP] Torres, Fernanda Magri [UNESP] Campos, Mariana Batista [UNESP] |
description |
Synchronization of airborne laser scanning devices is a critical process that directly affects data accuracy. This process can be more challenging with low-cost airborne laser scanning (ALS) systems because some device connections from off-the-shelf sensors are less stable. An alternative to synchronization is performing a postprocessing clock correction. This article presents a technique for postprocessing synchronization (off-line) that estimates clock differences based on the correlation between the signals from the global navigation satellite system (GNSS) trajectory and the light detection and ranging (lidar) range, followed by refinement with a least-squares method. The correlation between signals was automatically estimated considering the planned flight maneuvers, in a flat terrain, to produce altimetric trajectory variations. Experiments were performed with an Ibeo LUX laser unit integrated with a No-vAtel SPAN-IGM-S1 inertial navigation system that was transported by an unmanned aerial vehicle (UAV). The planimetric and altimetric accuracies of the point cloud obtained with the proposed postprocessing synchronization technique were 28 cm and 10 cm, respectively, at a flight height of 35 m. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-01 2020-12-12T01:44:03Z 2020-12-12T01:44:03Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.14358/PERS.85.10.753 Photogrammetric Engineering and Remote Sensing, v. 85, n. 10, p. 753-763, 2019. 0099-1112 http://hdl.handle.net/11449/199592 10.14358/PERS.85.10.753 2-s2.0-85074394062 |
url |
http://dx.doi.org/10.14358/PERS.85.10.753 http://hdl.handle.net/11449/199592 |
identifier_str_mv |
Photogrammetric Engineering and Remote Sensing, v. 85, n. 10, p. 753-763, 2019. 0099-1112 10.14358/PERS.85.10.753 2-s2.0-85074394062 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Photogrammetric Engineering and Remote Sensing |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
753-763 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799964747974574080 |