Imagem da capa

Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination

The techniques of leveling used were: precision geometric leveling with equal aims method and electronic level; precision trigonometric leveling - Leap-Frog technique - with medium and high precision total stations; and an adaptation of a methodology recommended by the Brazilian Institute of Geograp...

ver descrição completa

Principais autores: Nicacio, Eurico Lourenço, Santacruz Jaramillo, Andrea Galudht, Zanetti, Gabriel Zehnpfennig, Faggion, Pedro Luis
Formato: Artigo
Idioma: Português
Publicado em: Universidade Tecnológica Federal do Paraná (UTFPR) 2018
Acesso em linha: http://periodicos.utfpr.edu.br/rbgeo/article/view/6889
Tags: Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
id peri-article-6889
recordtype ojs
spelling peri-article-68892018-12-14T12:24:19Z Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination Avaliação de técnicas de nivelamento e métodos de posicionamento GNSS para determinação de desnível de primeira ordem Nicacio, Eurico Lourenço Santacruz Jaramillo, Andrea Galudht Zanetti, Gabriel Zehnpfennig Faggion, Pedro Luis Geociências Nivelamento Geométrico; Nivelamento Trigonométrico; Travessia de Rio; Leap-Frog; Levantamento Altimétrico de Alta Precisão; Posicionamento GNSS Geometric Levelling; Trigonometric Levelling; River-crossing; Leap-Frog; High Precision; GNSS Positioning The techniques of leveling used were: precision geometric leveling with equal aims method and electronic level; precision trigonometric leveling - Leap-Frog technique - with medium and high precision total stations; and an adaptation of a methodology recommended by the Brazilian Institute of Geography and Statistics - IBGE for river crossing with precision leveling, using optical level. The different GNSS positioning and processing techniques used were: static relative method with transmitted ephemeris; static relative method with precise ephemeris; and Precise Point Positioning [PPP], from IBGE. After the experiments carried out, it was observed that all the leveling techniques presented accuracy within the limits indicated by IBGE for first order leveling (3mm√k). Regarding the use of GNSS positioning methods, the results obtained were unsatisfactory to the required precision. In particular, the adaptation of the river crossing technique with precision leveling proved to be a possible application for the determination of unevenness that, although old and not very widespread, provided the proper precision to the operation. Este artigo descreve estudos realizados com o intuito de verificar e avaliar a precisão obtida através do emprego de diferentes técnicas de nivelamento e métodos de posicionamento GNSS com diferentes métodos de processamento. As técnicas de nivelamento utilizadas foram: nivelamento geométrico de precisão – método de visadas iguais com nível eletrônico; nivelamento trigonométrico de precisão – técnica Leap-Frog – com estações totais de média e alta precisão; e adaptação de metodologia recomendada pelo Instituto Brasileiro de Geografia e Estatística – IBGE para travessia de rios com nivelamento de precisão, utilizando nível óptico. As diferentes técnicas de posicionamento e processamento GNSS utilizados foram: método relativo estático com efemérides transmitidas; método relativo estático com efemérides precisas; e Processamento por Ponto Preciso [PPP], do IBGE. Após a realização dos experimentos, como resultado observou-se que todas as técnicas de nivelamento apresentaram precisão dentro dos limites indicados pelo IBGE na Resolução para nivelamento pelo IBGE para nivelamento de 1ª ordem (3mm√k). Com relação ao uso dos métodos de posicionamento GNSS, os resultados obtidos foram insatisfatórios para a precisão exigida. Em especial, a adaptação da técnica de travessia de rios com nivelamento de precisão mostrou-se como uma possível aplicação para determinação de desnível que, apesar de antiga e pouco difundida, forneceu a precisão adequada à a operação. Universidade Tecnológica Federal do Paraná (UTFPR) 2018-12-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf http://periodicos.utfpr.edu.br/rbgeo/article/view/6889 10.3895/rbgeo.v6n4.6889 Revista Brasileira de Geomática; v. 6, n. 4 (2018); 274-293 Revista Brasileira de Geomática; v. 6, n. 4 (2018); 274-293 2317-4285 10.3895/rbgeo.v6n4 por http://periodicos.utfpr.edu.br/rbgeo/article/view/6889/5812 Direitos autorais 2018 CC-BY http://creativecommons.org/licenses/by/4.0
institution Universidade Tecnológica Federal do Paraná
collection PERI
language Português
format Artigo
author Nicacio, Eurico Lourenço
Santacruz Jaramillo, Andrea Galudht
Zanetti, Gabriel Zehnpfennig
Faggion, Pedro Luis
spellingShingle Nicacio, Eurico Lourenço
Santacruz Jaramillo, Andrea Galudht
Zanetti, Gabriel Zehnpfennig
Faggion, Pedro Luis
Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination
author_sort Nicacio, Eurico Lourenço
title Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination
title_short Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination
title_full Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination
title_fullStr Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination
title_full_unstemmed Evaluation of levelling techniques and GNSS positioning methods for 1st order height difference determination
title_sort evaluation of levelling techniques and gnss positioning methods for 1st order height difference determination
description The techniques of leveling used were: precision geometric leveling with equal aims method and electronic level; precision trigonometric leveling - Leap-Frog technique - with medium and high precision total stations; and an adaptation of a methodology recommended by the Brazilian Institute of Geography and Statistics - IBGE for river crossing with precision leveling, using optical level. The different GNSS positioning and processing techniques used were: static relative method with transmitted ephemeris; static relative method with precise ephemeris; and Precise Point Positioning [PPP], from IBGE. After the experiments carried out, it was observed that all the leveling techniques presented accuracy within the limits indicated by IBGE for first order leveling (3mm√k). Regarding the use of GNSS positioning methods, the results obtained were unsatisfactory to the required precision. In particular, the adaptation of the river crossing technique with precision leveling proved to be a possible application for the determination of unevenness that, although old and not very widespread, provided the proper precision to the operation.
publisher Universidade Tecnológica Federal do Paraná (UTFPR)
publishDate 2018
url http://periodicos.utfpr.edu.br/rbgeo/article/view/6889
_version_ 1805295406796505088
score 10,814766

Registros relacionados