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| Data type sensor (platform) | Spatial scale extent (GRE) | Spectral resolution | Radiometric resolution | Temporal resolution frequency (time of day) | Source/cost | Archive |
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Aerial photographs PAN stereo Colour stereo CIR stereo |
Extremely fine to fine (local) Extent: 1.3 – 33km2 Per photo GRE: 5m – 250m |
Low - Broad band
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Medium Not applicable (depends on scanning device) |
User controlled (subject to weather and aircraft availability) |
$90 frame to fly and buy hardcopy Scanning and georeferencing require additional costs Various government agencies and private companies. |
Contact companies or agencies to determine (at least annual from 1970) |