Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1
Autor(a) principal: | |
---|---|
Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/225558 |
Resumo: | To prevent large errors in the GPS positioning, cycle slips should be detected and corrected. Such procedure is not trivial, mainly for single frequency receivers, but normally it is not noticed by the users. Thus, it will be discussed some practical and more used methods for cycle slips detection and correction using just GPS single-frequency observations. In the detection, the triple (TD) and tetra differences were used. In relation to the correction, in general, each slip is corrected in the pre-processing. Otherwise, other strategies should be adopted during the processing. In this paper, the option was to the second option, and two strategies were tested. In one of them, the elements of the covariance matrix of the involved ambiguities are modified and new ambiguity estimation starts. In the one, a new ambiguity is introduced as additional unknown when a cycle slip is detected. These possibilities are discussed and compared in this paper, as well as the aspects related to the practicity, implementation and viability of each one. Some experiments were carried out using simulated data with cycle slips in different satellites and epochs of the data. This allowed assessing and comparing the results of different occurrence of cycle slip and correction in several conditions. |
id |
UNSP_89b1bb3e9e4d4a21eb48974cb8d760e0 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/225558 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1Assessment of strategies for detection and correction of cycle slips on GPS L1 observablesCicle slipsDouble differencesRTKTetra differencesTo prevent large errors in the GPS positioning, cycle slips should be detected and corrected. Such procedure is not trivial, mainly for single frequency receivers, but normally it is not noticed by the users. Thus, it will be discussed some practical and more used methods for cycle slips detection and correction using just GPS single-frequency observations. In the detection, the triple (TD) and tetra differences were used. In relation to the correction, in general, each slip is corrected in the pre-processing. Otherwise, other strategies should be adopted during the processing. In this paper, the option was to the second option, and two strategies were tested. In one of them, the elements of the covariance matrix of the involved ambiguities are modified and new ambiguity estimation starts. In the one, a new ambiguity is introduced as additional unknown when a cycle slip is detected. These possibilities are discussed and compared in this paper, as well as the aspects related to the practicity, implementation and viability of each one. Some experiments were carried out using simulated data with cycle slips in different satellites and epochs of the data. This allowed assessing and comparing the results of different occurrence of cycle slip and correction in several conditions.Universidade Estadual Paulista - UNESP Faculdade de Ciências e Tecnologia - FCT Departamento de Cartografia, Presidente Prudente - SPFundação Instituto Brasileiro de Geografia e Estatística - IBGE Unidade Estadual do IBGE em Santa Catarina/UE-SC Gerência de Geodésia e Cartografia - GGCUniversidade Estadual Paulista - UNESP Faculdade de Ciências e Tecnologia - FCT Departamento de Cartografia, Presidente Prudente - SPUniversidade Estadual Paulista (UNESP)Gerência de Geodésia e Cartografia - GGCMonico, João Francisco Galera [UNESP]de Souza, Eniuce Menezes [UNESP]Machado, Wagner Carrupt2022-04-28T20:54:27Z2022-04-28T20:54:27Z2009-08-04info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article178-193Boletim de Ciencias Geodesicas, v. 15, n. 2, p. 178-193, 2009.1413-4853http://hdl.handle.net/11449/2255582-s2.0-67849124343Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporBoletim de Ciencias Geodesicasinfo:eu-repo/semantics/openAccess2022-04-28T20:54:27Zoai:repositorio.unesp.br:11449/225558Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T20:54:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 Assessment of strategies for detection and correction of cycle slips on GPS L1 observables |
title |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 |
spellingShingle |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 Monico, João Francisco Galera [UNESP] Cicle slips Double differences RTK Tetra differences |
title_short |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 |
title_full |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 |
title_fullStr |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 |
title_full_unstemmed |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 |
title_sort |
Avaliação de estratégias de detecção e correção de perdas de ciclos na portadora GPS L1 |
author |
Monico, João Francisco Galera [UNESP] |
author_facet |
Monico, João Francisco Galera [UNESP] de Souza, Eniuce Menezes [UNESP] Machado, Wagner Carrupt |
author_role |
author |
author2 |
de Souza, Eniuce Menezes [UNESP] Machado, Wagner Carrupt |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) Gerência de Geodésia e Cartografia - GGC |
dc.contributor.author.fl_str_mv |
Monico, João Francisco Galera [UNESP] de Souza, Eniuce Menezes [UNESP] Machado, Wagner Carrupt |
dc.subject.por.fl_str_mv |
Cicle slips Double differences RTK Tetra differences |
topic |
Cicle slips Double differences RTK Tetra differences |
description |
To prevent large errors in the GPS positioning, cycle slips should be detected and corrected. Such procedure is not trivial, mainly for single frequency receivers, but normally it is not noticed by the users. Thus, it will be discussed some practical and more used methods for cycle slips detection and correction using just GPS single-frequency observations. In the detection, the triple (TD) and tetra differences were used. In relation to the correction, in general, each slip is corrected in the pre-processing. Otherwise, other strategies should be adopted during the processing. In this paper, the option was to the second option, and two strategies were tested. In one of them, the elements of the covariance matrix of the involved ambiguities are modified and new ambiguity estimation starts. In the one, a new ambiguity is introduced as additional unknown when a cycle slip is detected. These possibilities are discussed and compared in this paper, as well as the aspects related to the practicity, implementation and viability of each one. Some experiments were carried out using simulated data with cycle slips in different satellites and epochs of the data. This allowed assessing and comparing the results of different occurrence of cycle slip and correction in several conditions. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-08-04 2022-04-28T20:54:27Z 2022-04-28T20:54:27Z |
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 |
Boletim de Ciencias Geodesicas, v. 15, n. 2, p. 178-193, 2009. 1413-4853 http://hdl.handle.net/11449/225558 2-s2.0-67849124343 |
identifier_str_mv |
Boletim de Ciencias Geodesicas, v. 15, n. 2, p. 178-193, 2009. 1413-4853 2-s2.0-67849124343 |
url |
http://hdl.handle.net/11449/225558 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Boletim de Ciencias Geodesicas |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
178-193 |
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_ |
1797789698977955840 |