The Advanced Synthetic Aperture Radar (ASAR) on-board ENVISAT is an active C-band radar that provides land cover data regardless of cloud cover and time of day/night. ASAR was designed for continuity with the image and wave modes of the ERS-1/2 AMI-SAR. It features enhanced capability in terms of coverage, range of incidence angles, polarisation, and modes of operation. This enhanced capability is provided by significant differences in the instrument design: a full active array antenna equipped with distributed transmit/receive modules which provides distinct transmit and receive beams, a digital waveform generation for pulse "chirp" generation, a block adaptive quantisation scheme, and a ScanSAR mode of operation by beam scanning in elevation.
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More Information (under review)
- ASAR specifications and details
- ASAR product handbook
Links to further information
- The ESA ASAR website
If you have queries about these pages or about obtaining the data from the NEODC then you should contact the NEODC Support team. Your query should be answered within one working day. When follow-up work is required, the NEODC support team will carry out the work as quickly and efficiently as possible.
|The ESA ASAR website|
|ASAR specifications and details|
|ASAR product handbook|