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ASAR Image Mode Precision Image
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Last update: 2 August 2016
This is a multi-look, ground range, digital image generated from Level 0 data collected when the instrument is in Image Mode (7 possible swaths HH or VV polarisation). The product includes slant range to ground range correction. It is for users wishing to perform applications-oriented analysis and applies to multi-temporal imaging and to derive backscattering coefficients.
The stand-alone image is generated using the Range/Doppler algorithm. The processing uses up to date (at time of processing) auxiliary parameters corrected for antenna elevation gain, and range spreading loss. Engineering corrections and relative calibration are applied to compensate for well-understood sources of system variability. Absolute calibration parameters, when available (depending on external calibration activities) are provided in the product annotations.
This product provides a continuation of the ERS-SAR_PRI product.
Spatial Resolution: 30 m ground range x 30 m azimuth
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
ASAR Products Specification - Revision C
Range Doppler Algorithm
ASA_IMP_1P File Structure
Envisat ASAR Science and Applications
ASAR Level 1 Algorithms
ASAR Product Handbook
More ASAR 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.