Introduction to data type
Satellite data with high resolution are defined by spatial resolution of about tens of meters. These data are often obtained simultaneously in panchromatic and mulitspectral mode with significant share of spectral bands covering infrared optical spectrum. Some satellites acquire the data solely in a regular, usually a few week period. Other more modern satellites are able to take a data according to the customer’s request. In both cases extensive data archives are available containing all the images acquired since the launch of the satellite.
The data are suitable for mapping or updating of maps in the scale range 1:100,000 – 1:25,000.
Potential application
Availability (including suppliers details)
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Collection considerations (time of day, FOV, etc.)
- You shoudl take into consideration of what time of day you wish to collect your data and also keep an eye on the weather, idealy you want a clear and cloudless day, this would give you the best chance for clear images.
Processing levels
- Low
Cost
- Free through USGS: Earth Explorer
File format
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- Downloaded as a zip file
- IMG, RRD, AUX, and VSK files are found within the zip files
Coverage
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- Standard Scene: 7,7km x 42km
- Extended Scene: 7,7km x 185km
Swath width = 13.8km
Spatial, spectral, radiometric and temporal resolution
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- Spatail resolution: 30.0 m
- Spectral resolution: 30.0m
- Radiometric resolution: 16 bit
- Temporal Resolution: 30 days
Spectral range/bands
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Software requirements
- PCI
- SNAP
- Geomatica
Processing requirements
- Low
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Degree of difficulty
- Low
