Geodetic Methods
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. OUTLIER=GROSS ERROR? DO ONLY GROSS ERRORS CAUSE OUTLIERS IN GEODETIC NETWORKS? ADDRESSING THESE AND OTHER QUESTIONS
Abstract This article has theoretically discussed some points regarding outliers caused by errors in geodetic observations (see consideration made). Comments have also been made on the usual 3σ-rule to identify outliers and its common approachs in the simulation of outliers in geodetic networks. Three simulated experiments have been conducted to verify the
Bol. Ciênc. Geod.. Publicado em: 14/10/2019
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2. SHORELINE MONITORING BY GNSS-PPP AIMING TO ATTENDANCE THE LAW 14.258/2010 FROM PERNAMBUCO STATE, BRAZIL
Abstract The geodetic shoreline positioning has socioeconomic importance due to decision-making support related to the coastal zone. The Pernambuco state, Brazil, has established a state law no. 14.258/2010 sanctioned as part of Coastal Zone Management State Policy. The state act no. 42.010/2015 enacted the baseline information for Pernambuco shoreline. Cons
Bol. Ciênc. Geod.. Publicado em: 18/07/2019
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3. Modelamiento geométrico del cambio de coordenadas UTM causadas por mudanza de referencial geodésico: Caso Sirgas - Chile
Technological advances in recent decades have allowed determining with increasing precision, parameters related to size, shape and gravitational field of the Earth. These new technologies and methods of observation and analysis, accept the use of different Geodetic Reference Systems (GRS) that enable the description of position of any point on Earth's surfac
Bol. Ciênc. Geod.. Publicado em: 2012-12
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4. Horizontal and vertical positional accuracy assement of cartographic products of the amazon region derived from interferometric sar data in X and P bands from ORBISAR sensor / Avaliação da acurácia posicional planialtimétrica de produtos cartográficos da Região Amazônica extraídos de dados SAR interferométricos nas bandas X e P do sensor ORBISAR
The Geographic Service of the Brazilian Army (DSG) is running a major mapping project in Brazil, called ´´Radiography Amazon", the region known as ´´Empty Mapping the Amazon." This area, approximately 1,8 million km$^2$, has not had, to date, appropriate land information mapping at scales larger than 1:250,000, except insufficient cartographic documents
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2011
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5. Aplicação do teste de congruência global e análise geométrica para detecção de deslocamentos em redes geodésicas: estudo de caso na UHE de Itaipu. / Application of global congruency test and geometric analysis for detection of displacements in geodetic networks: a case study in the itaipu dam.
Grandes estruturas, sejam elas naturais ou artificiais, estão sujeitas a variações, em suas dimensões e posição, no espaço e no tempo. O monitoramento de estruturas está diretamente ligado com a segurança das mesmas, pois o colapso de uma estrutura artificial ou movimentação de estruturas naturais podem causar perdas econômicas, impactar o meio a
Publicado em: 2010
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6. Algoritmos de navegação em tempo real para um sistema GPS de posicionamento relativo de precisão / Real time navigation algorithms for a percise GPS relative positioning system
The GPS signal is subject to several error sources in the measurements. The combined effects of these errors in the propagation signal cause a degradation in precision of positioning. However, using carrier phase measurements, it is possible to reduce positioning error up to 100 times, if compared with positioning using code measurernents. However, this type
Publicado em: 2009
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7. COMPARAÇÃO DE PROCEDIMENTOS PARA A INTEGRAÇÃO DE LEVANTAMENTOS TOPOGRÁFICOS E LEVANTAMENTOS COM GPS / COMPARISON OF PROCEDURES FOR THE INTEGRATION OF TOPOGRAPHICAL SURVEYS AND GPS SURVEYS
The georeferencing consists of the description of the rural property, characteristics and confrontations, of descriptive memorial containing the border coordinates, georeferenced to the Brazilian Geodetic System following the positioning precision defined by INCRA. The perimeter survey of a rural property can be done only using GPS receivers, or only with to
Publicado em: 2009
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8. Gestão municipal com o uso de geotecnologias / Municipal administration with use of geothecnologies
This paper has the purpose of presenting procedures for planning and implementing a Municipal Geographic Information System (GIS) with an emphasis on the precision, exactness, reliability, safety, and interoperability of the data and geographical information. The methodologies and techniques for elaborating a Digital Cartographic Base with a topological stru
Publicado em: 2007
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9. InvestigaÃÃes metodolÃgicas sobre o monitoramento da subsidÃncia do solo devido à extraÃÃo de Ãgua subterrÃnea - caso da RegiÃo Metropolitana de Recife
Soil subsidence is a serious phenomenon that consists in ground settlement caused by fluid removal from the soil and underneath layers with reduction of the soil support capacity. Several metropolitan regions have damage due to subsidence occurrence. Many countries have registered subsidence cases due to groundwater overexploitation in sedimentary and carst
Publicado em: 2005
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10. MÃtodos geodÃsicos para a racionalizaÃÃo construtiva no posicionamento preciso de edificaÃÃes prediais
The main objective of this work is to develop a methodology that allows the use of geodetic and topographical techniques for using in urban works of small and medium building constructions. The use of these techniques contributes to the improvement in the processes of constructive rationalization, for dimensional controlling of engineering work, and for upda
Publicado em: 2003