845 resultados para Sistema de Posicionamento Global


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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Pós-graduação em Geografia - IGCE

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Pós-graduação em Ciências Cartográficas - FCT

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Pós-graduação em Ciências Cartográficas - FCT

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The use of the Global Positioning System technology has brought a real revolution in the surveying and georeferencing techniques, which are the basis for many others relevant studies to the many fields of Geography. In this sense, it was seen a massive growth of the use of GNSS receivers in Brazil from the early 2000s, due the duty of Georreferencing Rural Properties to comply with the 10.267/2001 law. For Georreferencing, it is needed high accuracy receivers, and most of time, it is used two receivers: one static base and one rover. To do the adjustment of the base (in order to correct errors), two ways are utilized: post-processing via the brazilian GNSS network - Rede Brasileira de Monitoramento Contínuo dos Sistemas GNSS (RBMC) or via Precise Point Positioning - Posicionamento por Ponto Preciso, both managed by IBGE. Given the wide range of applications as well as discussions on the accuracy of both methods, this monograph aims to conduct a comparative analysis and prove the effectiveness of both methods considering the INCRA’s Standard for Rural Properties Georreferencing. From the processing of GNSS data collected in Piracicaba, Ituverava, Iperó and São Pedro, it could be seen that the research reached the objectives and shows that both methods are accurate and feasible

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Due to an intense process of population growth and urban density in Americana (SP), mainly due to the development of the local textile industry after 1970, there was, concomitant to the occupation of the margin of rivers and streams, soil sealing that increased the level of superficial runoff, triggering frequent floods. Based on the analysis of these processes we investigate the conditions of one densely urbanized area of the county, the Córrego do Parque, in three time series, 1977, 1996 and 2008. Taking as the starting the characterization and spatial distribution of landscape physiography, we prepared thematic letters and synthetic maps digital scale 1:10,000 from photointerpretation of aeroframes. The thematic maps were produced by scanning with subsequent edition using the software Auto-Cad Map. Checking the data and of geographic coordinates with GPS (Global Positioning System). Regarding land use classes, we used the description of the Soil Conservation Service (1975) which allowed us to get the Curve Number parameter, which will be used in hydrologic modeling for verification of flooding (Tucci, 1989). For the process of hydrologic modeling, we used models based on Methodology Object Oriented Modeling Applied to Water Resource Systems, Viegas Filho (1999), using the computer program called IPHS1, which uses models of the Soil Conservation Service (SCS , 2004), for conversion of rainfall-runoff and the spread of excessive rain. The results indicate that increased waterproofing generated by the change in use and occupation over the past decades promoted the increased surface runoff and drainage system overload, increasing the intensity of floods

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)