Altimetry By Gps
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. A QUANTITATIVE EVALUATION OF DGPS PERFORMANCE IN THE POSITION AND PSEUDORANGE DOMAINS
Abstract: This study compares in quantitative terms two methods of differential corrections to GPS positioning from the code-based pseudoranges. The differential method calculated from the coordinates (Latitude, Longitude and Altitude), called Position-Domain DGPS, has simple implementation and easy transmission by the correction vector. The second method, c
Bol. Ciênc. Geod.. Publicado em: 02/12/2019
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2. Testes sobre a eficiência do modelo do geopotencial EGM2008 na cidade de Porto Alegre
Este estudo apresenta o teste da eficiência do Earth Global Model 2008 (EGM2008) na geração de um modelo geoidal local, através da compatiblização com a ondulação obtida por posicionamento GPS (Global Positioning System) em 63 Referências de Nível (RN’s) localizadas no município de Porto Alegre, Rio Grande do Sul. O objetivo geral da dissertaç�
Publicado em: 2010
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3. TERRAIN ELEVATION MODELLING WITH CONVENTIONAL ALTIMETRY AND GPS / MODELAGEM DA ELEVAÇÃO DO TERRENO COM ALTIMETRIA CONVENCIONAL E GPS
The Global Positioning System has all heights referred to the ellipsoid. However, for engineering applications it is necessary to have heights related to the earth gravitational field, which have physical meaning. In order to determine the orthometric height from the geoidal height, which is given at the GPS, it is necessary to know the geoidal undulation. T
Publicado em: 2006
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4. Propostas para o controle de qualidade de bases cartográficas com ênfase na componente posicional. / Purpose from the cartographic bases quality control with emphasis in the positional component.
The purpose from this job is to create new alternatives and solutions for the mapping quality control with emphasis on the positional component. A bibliographic revision of cartography standards from over 60 countries have been done, what has resulted in suggestions for the Brazilian ones. The following themes have been tackled: number of control points for
Publicado em: 2005
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5. Calibração dos modelos digitais de elevação gerados por interferometria SAR nas bandas PEX / x
The objective of this work is to evaluate and calibrate the altimetric models generated by techniques of interferometry SAR in X and P bands, as well as evaluating erros in the method used in the acquisition of ground data. The calibration was performed in order to compensate the interferometric methodology erros, acquisitions erros and ground control points
Publicado em: 2005
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6. Performance assessment of gps receivers in land leveling. / Avaliação do desempenho de receptores GPS em levantamentos altimétricos, para fim de sistematização de terras.
The constant evolution of the equipments and softwares in the surveing field has brought a lot of gain in productivity and quality to make maps that are the foundation for the engineering projects. The purpose of this work is the comparative analyses of the data obtained by 3 different equipments that are very used in the national market - the Total Station,
Publicado em: 2003