Satellite multispectral Close Window

Data type sensor (platform) | Spatial scale extent (GRE) | Spectral resolution | Radiometric resolution | Temporal resolution frequency (time of day) | Source/cost | Archive
Ikonos Quickbird | Extremely fine (local) Extent: 10km–20km GRE: 1m (pan) or 4m (multi) | Medium range: 400–1000nm #bands: 3 | Medium 8 bit (256 levels) | AM 3 days – pointable | Geoimage US$29/km2 for georeferenced image | There are extensive archivers for each sensor: Quickbird Ikonos Geoimage is an Australian company responsible for coordinating multi-agency purchases and has access to a number of archives of these data in Australia ACRES maintains Landsat and SPOT archives SeaWiFS data can be accessed through the oceancolor website
Landsat ETM Landsat TM SPOT XS IRS | Medium (Province - Region) Extent: 34225km2 or 185km x 185km GRE: 15–30m | Medium range: 400–2500nm 10um–12.5um #bands: 4–7 | Medium 8 bit (256 levels) | AM 16 days AM 16 days AM 26 days — pointable AM 24 days | Geoimage or ACRES $1950 for geocoded full scene (200km)
SPOT VMI NOAA AVHRR | Coarse (Region) Extent: 2500km wide GRE: 1km | Medium range: 400–2500nm 10um–12.5um #bands:4 | High 10 bit (1024 levels) | AM 2 days AM + PM twice daily |
SeaWifs (Orbview 2 or SEASTAR) | Coarse (Region) Extent: 2200km wide GRE: 1km | Medium range: 400–885nm #bands: 8 | High 10 bit (1024 levels) | AM 1 day |

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