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Datamodel

Datamodel. Vector Raster Lattice Tin Image tabel. Vector. Raster: GRID. Tin. Images. The Netherlands. Stereographic projection Ellipsoid of Bessel Amersfoort False easting 155000, false northing 463000 NAP http://www.rdnap.nl. Datasets of the Netherlands. Top10vector & Top10NL

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Datamodel

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  1. Datamodel • Vector • Raster • Lattice • Tin • Image • tabel

  2. Vector

  3. Raster: GRID

  4. Tin

  5. Images

  6. The Netherlands • Stereographic projection • Ellipsoid of Bessel • Amersfoort • False easting 155000, false northing 463000 • NAP • http://www.rdnap.nl

  7. Datasets of the Netherlands • Top10vector & Top10NL • GBKN (via wms) • Bodemstatistiek CBS • LGN (4) • AHN (1) + proefset versie 2 • Aerial photography • Alterra Soilmap/Geomorphology

  8. Datasets of the Netherlands • Rijkswaterstaat: Ecotopes • Nationaalwegenbestand: Roads • Administrative maps: • Bonne blaadjes (historic topography) • Dino • And many more….

  9. metadata • www.nationaalgeoregister.nl • www.provinciaalgeoregister.nl

  10. Top10vector & Top10NL • Vector (10, 50) • Raster (25,50,250) • Cover  shapefile  Geodatabase

  11. BodemstatistiekFunctional landuse • CBS • Top10 base • 1989, 1993,1996, 2000, • 2003, 2006, 2008

  12. AHN • www.ahn.nl • 16 m2 min #1pt • 5cm sd=15cm

  13. Techniques http://www.minvenw.nl/rws/mdi/geoloket/ahn.html

  14. Aerial photography • Oblique • Stereo • Ortho • Jaarlijks (DLG)

  15. protocols • Open Geospatial Consortium (OGC) • Web Map Service (WMS) • Web Feature Service (WFS) • Web Coverage Service (WCS)

  16. UMN mapserver GeoServer ArcGIS Server Thredds (TDS) Mscross Google earth Arcgis Desktop Arcexplorer uDig gvSIG server/client (OGC)

  17. Google Earth • KML/KMZ

  18. What is RS Remote Sensing is the science or the technique of deriving information about objects at the Earth surface from images using (parts of) the electromagnetic spectrum • Measuring electromagnetic energy (light), reflected or emitted • Non-destructive method, no physical contact • Surveying the spatial distribution of objects • Determining properties of objects • Monitoring the dynamics of features

  19. Global datasets • MSS/TM5/TM7 • ASTER + ASTER GDEM • GTOPO30/SRTM30/3/1 • VMAP0

  20. MSS/TM5/TM7

  21. TM5_mrsid • RGB=7,4,2 • 30 meter • 23.4 Gb

  22. TM7_mrsid • RGB=7,4,2 • 15 meter • 117 Gb

  23. World DEM • GTOPO30 • SRTM30 • SRTM3 • SRTM1

  24. GTOPO30 • 30 arcseconds

  25. Shuttle Radar Topography Mission (SRTM) • Uses radar interferometry (SIR-C/X-SAR) • Maps 80% of the Earth in 11 days • Horizontal accuracy: 20 m • Vertical accuracy: 16 m • Resolution: 1 arc second (ca. 30 m) http://www.jpl.nasa.gov/srtm/mission.htm

  26. ASTER/MODIS Product Description The Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of a number of instruments on board the Terra platform, which was launched in December 1999. ASTER provides fourteen spectral bands with 15- to 90-meter resolution depending on bands. ASTER does not acquire data continuously, and its sensors are activated only to collect specific scenes upon request. The instrument consists of three separate telescopes, each of which provides different spectral range and resolution. The VNIR (visible and near-infrared) sensor provides 4 bands at 15-meter resolution. The SWIR (short-wave infrared) sensor provides 6 bands at 30-meter resolution. The TIR (thermal infrared) sensor provides 5 bands at 90-meter resolution. The swath width for all sensors is 60 kilometers. ASTER data is generally available in the Universal Transverse Mercator (UTM) projection, although some individual scenes may be cast to an alternative projection. The data is referenced to the World Geodetic Survey (WGS) system of 1984 (WGS84). Files are in the HDF-EOS format, and are distributed on CD-ROM, DVD, DLT, 8-mm tape, and File Transfer Protocol (FTP).

  27. ASTER GDEM http://www.gdem.aster.ersdac.or.jp/ http://gdex.cr.usgs.gov/gdex/

  28. VMAP0 • Based on DCW • 1:1000000

  29. Mars datasets • Themis IR • DEM

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