Minimize ASAR

An Advanced Synthetic Aperture Radar (ASAR), operating at C-band, ASAR ensures continuity with the image mode (SAR) and the wave mode of the ERS-1/2 AMI. 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.

Not Operational
Imaging microwave radars
Technical Characteristics
Radiometric resolution in range: 1.5-3.5 dB, Radiometric accuracy: 0.65 dB
Spatial Resolution:
Image, Wave and Alternating Polarisation modes: approx 30m x 30m.Wide Swath mode: approx 150m x 150m. Global Monitoring mode: approx1000m x 1000m.
Swath Width:
Image and alternating polarisation modes: up to 100km, Wave mode:5km, Wide swath and global monitoring modes: 400km or more
Microwave: C-band, with choice of 5 polarisation modes (VV, HH,VV/HH, HV/HH, or VH/VV)
Earth Topics
Land ( Landscape Topography ), Snow and Ice ( Snow and Ice ), Ocean and Coast ( Ocean Currents and Topography )
Available Resources Type Access
ASAR FAQ Technical Document link
Absolute calibration of ASAR Level 1 products generated withPF-ASAR Proceedings download
ENVISAT ASAR Auxiliary Data Product link
ENVISAT ASAR Wave Mode Product Description and ReconstructionProcedure Product Document download
ASAR Products Specifications - Revision C Product Document download
Annex A - Product Data Conventions Product Document download
Minimize Latest Mission Operations News

ERS/Envisat (A)SAR dissemination - Maintenance 29 August 2019

28 August 2019

Due to a scheduled maintenance on the OTF infrastructure, access to the ERS and Envisat (A)SAR data collections on the Simple Online Catalogue (SO-Cat) dissemination tool will be unavailable on Thursday 29 August 2019 from 09:00 to 11:30 CEST.