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Earth Topics (Applications)
ERS-1/2 - SAR Level 1 Precision Image Product
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Last update: 10 April 2017
The SAR Precision product is a multi-look (speckle-reduced), ground range image acquired in Image Mode. This product type is most applicable to users interested in remote sensing applications, but is also suitable for calibration purposes. The products are calibrated and corrected for the SAR antenna pattern and range-spreading loss. Radar backscatter can be derived from the products for geophysical modelling, but no correction is applied for terrain-induced radiometric effects. The images are not geocoded, and terrain distortion (foreshortening and layover) has not been removed.
The numbering sequence relates to the satellite position and therefore differs between Ascending and Descending scenes.
Data Set Specifications
How to access this data
Terms & Conditions applicable
Utilisation of this data is subject to ESA's Earth Observation Terms and Conditions
Envisat Format Product Specification
ERS-1 SAR Sensor Performance, Products and Algorithms
ERS-2 SAR Sensor Performance, Products and Algorithms
Basic Envisat SAR Toolbox (BEST)
Next ESA SAR Toolbox (NEST)
Sentinel-1 Toolbox / Sentinel Application Platform (SNAP)
Derivation of Backscattering Coefficient Sigma 0 in ESA ERS SAR PRI Products
Review of the impact of the ERS-2 Piloting Modes on the SAR Doppler Stability
More SAR Documents
How to access EO data
From Delivery to Acquisition
ESA Earth Observation Campaigns Data
ESA has been involved in many Earth Observation campaigns over the past 25 years, from ground-based surveys, to ships at sea, aircraft and balloons in the atmosphere and the orbiting satellites in space.
To learn more about these campaigns and available datasets from them, please see the Campaigns page.