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Characteristics of medium resolution satellite
imagery
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Date of image: October 20, 1993
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Spatial resolution: 30 meters
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Smallest resolvable object: ~75 meters
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Source: digital data collected in 7 spectral bands (3 visible,
3 infrared, 1 thermal infrared) by CCD on satellite (Landsat)
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Access: EOSAT, EROS Data Center, Space Imaging Corp.
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Uses: land cover and land use analysis and classification,
change detection, crop yields, soil surveys, geological investigations
and geomorphological mapping, forest inventory, hydrologic studies, water
quality monitoring, and oceanography
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Characteristics of medium scale aerial photograph
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Date of photograph: March 21, 1982
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Scale: 1:42,000
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Smallest resolvable object: 5 meters
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Source: color photographic film/camera in aircraft
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Access: National Ocean Service
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Uses: mapping and monitoring in the fields of agriculture,
forestry, geology, geomorphology, hydrology, oceanography, and urban development
and planning
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Characteristics of large scale aerial photograph
|
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Date of photograph: October 7, 1975
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Scale: 1:15,000
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Smallest resolvable object: 1 meter
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Source: color photographic film/camera in aircraft
|
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Access: National Ocean Service
|
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Uses: mapping and monitoring in the fields of agriculture,
forestry, geology, geomorphology, hydrology, oceanography, and urban development
and planning
|
Imagery Examples from the Map
& Imagery Laboratory
