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Free Satellite Image Data

Free global satellite image data is available from an increasing number of sources. Here are the most important archives and other useful data:

• Free Global Satellite Imagery Data Sources:

• USGS Global Visualization Viewer (GLOVIS)
• Landsat
• ASTER
• Aerial
• EO-1
• MODIS


• USGS Earth Explorer
• Landsat
• ASTER
• Aerial
• EO-1
• MODIS
• Declassified Satellite
• DLG
• DRG


• USGS LandsatLook Viewer
• Landsat


• USGS Geospatial Data Gateway
• NAIP
• Ortho
• Transportation
• DEM
• other


• USGS National Map
• US Topo
• Historical Topo Maps
• Structures
• Transportation
• Boundaries
• Geographic Names
• USGS Map Indices
• Hydrography
• Contours
• Land Cover
• Elevation
• Orthoimagery


• Natural Resources Canada Geogratis
• Landsat
• SPOT


• University of Maryland Global Land Cover Facility (GLCF)
• Landsat
• ASTER
• SRTM DEM
• EO-1
• MODIS


• Landsat.org
• Landsat orthorectified data


• GeoBase SPOT and Landsat imagery
• Landsat
• SPOT


• Earth Now Real Time Landsat Swath Imagery
• This website shows near-realtime Landsat swath imagery. About a two hour delay.


• LP-DAAC ASTER/MODIS Data Pool
• USA ASTER


• NASA Echo-Reverb
• Landsat
• ASTER
• Too many to mention


• NASA WorldWind Java SDK site
• Landsat
• SRTM elevation data


• NASA ZULU GeoCover site
• Pan Sharpened Landsat 7, 4, 2 data


• NASA MODIS Rapid Response site
• MODIS resolution is very coarse but it is multispectral data available in near-realtime.



• The USGS Digital Spectral Library contains reflectance spectra for a wide variety of organic and inorganic materials. These can be used with the PANCROMA Spectral Analyzer for mineral prospecting and land use studies. One of the most valuable sites on the Internet.

• The JPL ASTER Spectral Library is another excellent source of reflectance spectra.

• Although not as powerful as true multispectral analysis using PANCROMA Point Spectrum Generator and Spectral Analysis tools, Landsat Band Combinations are also commonly used for prospecting and land use.

• More information on band combinations at the Portland State University Landsat band data

• Geostationary Weather Imagery:

• NOAA National Hurricane Center Imagery
• Visible Flash
• IR Flash
• Water Vapor Flash
• Visible Image
• IR Image
• Water Vapor Image
• Other Global Weather Images


• NOAA GOES Geostationary Server
• Visible
• IR


• NOAA GOES Aviation Weather
• Turbulance
• Icing
• Convection
• Winds


• University of Wisconson Geostationary Weather Images
• Visible
• IR


• Australia Geostationary Satellite Images
• Visible
• IR
• NDVI
• Solar Irradiation


• Eumesat Satellite Images
• Visual
• Infrared


• SAT24 Global Weather Satellite Images
• Airmass
• Ash
• Convection
• Dust
• Much more interesting data

• Sample Data for Experimenting with PANCROMA™:

• Zipped Sample GeoTiff Band Files 1,2,3 PAN for experimenting with RGB color composites and pan sharpening. These are subset files from a full sized Landsat data set.

• Zipped Landsat Sample GeoTiff Band Files Bands 1,2,3,4,5 and 7 for experimenting with PANCROMA™ Spectral Analysis utilities.

• Use these Landsat Sample GeoTiff Band File Sets for Gap Filling in order to experiment with the gap filling routines. The zip file contains six images subsetted and matched using PANCROMA™.

• Zipped Landsat Sample GeoTiff Band File Sets for Spectal Analyzer™ with Readme file and Spectral Criteral Form slider settings.

• Zipped Landsat Sample Landsat 8 Multispectral Band Data. Subsetted using PANCROMA™ subset utility.

• Link to USGS full Sample Landsat 8 Data Set.

• DEM Data:

• USGS Global Data Explorer.

• SRTM
• ASTER DEM
• GTOPO 30

• Useful Manuals and Reports

• Landsat 8 Level 0 Reformatted Data Format Control Book

• Landsat 8 Data Format Control Book 1

• Landsat 8 Data Format Control Book 2

• LDCM CAL/VALALGORITHM DESCRIPTION DOCUMENT

• Landsat 8 versus Landsat 7 false color band combination comparison.

• PANCROMA Instruction Manual

• Landsat 7 Science Data Users Handbook

• Landsat 5 TM Radiometric Calibration Procedures

• WorldView2 Technical Notes

• DTED File Format

• Transformation Functions for Image Registration

• USGS Landsat Image Normalization Tutorial

• Franklin Approximation Final Report

• 2011 Digital Globe Data Fusion Contest Paper

• SPOT Technical Data

• SPOT FAQ

• How to Obtain ASTER Data

• ASTER Theoretical Basis

• Computing ASTER Reflectance

• EO-1 User Guide

• ALI Data Format Guide

• Radiometric Calibration Coefficients for Landsat and ALI

• The ASTER Spectral Library Version 2.0

• Landsat 7 on-orbit modulation transfer function estimation

• 3DEM Manual

• Impact of sensor’s point spread function on land cover characterization: assessment and deconvolution

• Useful Free Software

• Multispec

• Gimp

• MicroDem

• 3DEM

• TERRAINMAP.com Data List

• The TERRAINMAP.com Free Data List contains a comprehensive compilation of DEM and topographic map sources.

PANCROMA™ used world wide. Add your country to the list!