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Ers
Products
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Geometric & Radiometric
Quality
ERS data are subject to speckle, SAR antenna
pattern loss and range-spreading loss,
and are acquired in slant range. There
may also be terrain-induced radiometric
effects and terrain distortion. Various
levels of correction are available:
• Speckle reduction by multi-look
processing
• SAR antenna pattern loss and range-spreading
loss corrected by calibration
• Slant range corrected to ground
range
• Terrain-induced effects corrected
by applying a Digital Elevation Model
• Data georeferenced to a map projection
ESA produces a variety of standard ERS
products from data acquired at the Earthnet
stations (Kiruna and Matera). ESA also
produces standard products from data acquired
at the International Ground Stations. Formats
from IGS may differ slightly from ESA standards. |
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