The European Space Agency is making NEST available free of charge to the user community

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Geoinformatics Tutorial

Max König's Geoinformatics Tutorial shows how to Terrain Correct with NEST and remove exptreme values and outliers.

Snow detection from ENVISAT/ASAR data

Utilization of BEAM and NEST open source toolboxes in education and research

Markéta Potucková and Eva Štefanová

Charles University in Prague, Faculty of Science, Department of Applied Geoinformatics and Cartography

European Space Agency (ESA) provides several open source toolboxes for visualization, processing and analyzing satellite images acquired both in optical and microwave domains. Basic ERS & Envisat (A)ATSR and MERIS Toolbox (BEAM) was originally developed for easier handling ENVISAT optical data. Today this toolbox supports several raster data formats and datasets collected with other EO instruments such as MODIS, AVHRR, CHRIS/Proba. The NEXT ESA SAR Toolbox (NEST) has been created for processing radar data acquired from different satellites such as ERS 1&2, ENVISAT, RADARSAT or TerraSAR X. Both toolboxes are suitable for the education of the basic principles of data processing (geometric and radiometric corrections, classification, filtering of radar data) but also for research. Possibilities for utilization of these toolboxes in remote sensing courses based on two examples of practical exercises are described. Use of the NEST toolbox is demonstrated on a research project dealing with snow cover detection from SAR imagery.

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