Data orbital and airborne sensors represent an esse ntial source of data in topographic mapping. Therefore, the aim of this wor k is to compare three Digital Elevation Models (DEMs): ASTER, SRTM and TOPODATA, with planialtimetric digital model on a rural property with old gold min ing operation, located in the municipality of Paranaíta-MT. The orbital data for analysis were acquired free of charge, and homogenized in the same cartographic pr ojection system, being then possible to extract the altitudes to points of coor dinates (x, y) of planialtimetric the field survey. Subsequently carried out a quantitati ve and qualitative analysis of the accuracy of altitudes. Then we used image sensor l' Observation Système Pour la Terre (SPOT) to classify land cover and land use, i n order to investigate the relations of classes with altimetric accuracy of the sensors. Qualitative analysis compared the DEMs differ in distinct ways with advantages and li mitations. The DEM ASTER has higher spatial resolution, but shows some discontin uity in some areas, and underestimate altitudes in areas of dense forest, i n contrast, showed excellent results in the quantitative analysis by Mean Squared (9.69) method compared with TOPODATA 10.83 and SRTM 11.07. In qualitative analy sis MDE TOPODATA showed better results compared to other DEMs, howev er, with limitations related to the identification of variations in bit wavy relief areas. Relating the qualitative and quantitative variables, TOPODATA showed best agreem ent between digital elevation models, compared to the survey.

Author Name: Otacílio Santos de Araújo, Everton Valdomiro Pedroso Brum, Edgley Pereira da Silva, Charles Caioni, Wesley Vicente Claudino

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Keywords: Attributes of land; conventional optical stereosco py; interferometry.

ISSN: 1809-0583

EISSN: 2317-2606

EOI/DOI:

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