Generation of digital models of elevation through radargrametry with Radarsat-1 satellite images

• Grant number: 99/06271-7
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: February 01, 2000
• End date: September 30, 2003
• Field of knowledge: Physical Sciences and Mathematics - Geosciences
• Principal Investigator: Waldir Renato Paradella
• Grantee: Waldir Renato Paradella
• Company: Geoambiente Sensoriamento Remoto Ltda
• City: São José dos Campos

Abstract

The proposed research project is aimed at the training of the company in the generation of Digital Elevation Models – (DEM), by means of orbital radar images, as an aid to the creation of topographical charts and SAR Integrated Products for geoenvironmental applications. The methodology is based on radargrametry with the use of Standard and Fine images from the Canadian Radarsat-1satellite. The proposal prioritizes, also, the establishment of a culture in the use of the radar imaging technology in the company. Brazil has the dimensions of a continent and a poor cartographic knowledge. Only 60 per cent of the country is mapped topographically on the scale 1:100,000 and the bulk of this is out of date. In this sense, the use of Integrated Radar Products has great potential for added value, but this depends on a rigorous geometric correction (orthorectification) of the images. The project focuses on the generation of DEM of a test area located in the Carajás mountains (state of Pará), through Radarsat Fine and Standard images, treated with OrthoEngine SE software (PCI Geomatics), with a radargrametric approach (radar stereoscopy). In addition we will investigate the potential for creating topographical charts on the semidetail scale (1:100,000). In its second phase we intend to refine the results focusing on the generation of DEMs in the creation of topographic charts and Integrated Radar Products for geoenvironmental applications. In addition to this we will look on the international market for alternative devices (hardware and software) which will enable the plotting of the GCPs in three-dimensional vision (less propagation of error in the accuracy of the final elevation of the DEMs). (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE OLIVEIRA‚ C.G.; PARADELLA‚ W.R.. An assessment of the altimetric information derived from spaceborne SAR (RADARSAT-1‚ SRTM3) and optical (ASTER) data for cartographic application in the Amazon region. SENSORS, v. 8, n. 6, p. 3819-3829, 2008. (99/06271-7)