This website uses cookies. By continuing to use this website you are agreeing to our use of cookies. 



Sentinel 1A C-band Synthetic Aperture Radar (SAR): Interferometric Wide (IW) mode Ground Range Detected (GRD) Medium Resolution (MR) Level 1 data

Update Frequency: Not Planned
Latest Data Update: 2015-06-19
Status: Ongoing
Online Status: ONLINE
Publication State: Working
Publication Date:
Download Stats: last 12 months
Dataset Size: 1 Files | 40B


This dataset contains Interferometric Wide swath (IW) Ground Range Detected (GRD) Medium Resolution (MR) C-band Synthetic Aperture Radar (SAR) data from the European Space Agency (ESA) Sentinel 1A satellite. Sentinel 1A was lanched on 3rd April 2014 and provides continuous all-weather, day and night imaging radar data. The IW mode is the main operational mode. The IW mode supports single (HH or VV) and dual (HH+HV or VV+VH) polarisation. These data are available via CEDA to any registered scientific user in the UK.

Citable as:  European Space Agency (9999): Sentinel 1A C-band Synthetic Aperture Radar (SAR): Interferometric Wide (IW) mode Ground Range Detected (GRD) Medium Resolution (MR) Level 1 data. European Space Agency, date of citation.
Abbreviation: Not defined
Keywords: Sentinel, radar, Synthetic Aperture Radar, SAR, Interferometric Wide, IW, Ground Range Detected, GRD


Previous Info:
No news update for this record
Previously used record identifiers:
No related previous identifiers.
Access rules:
Public data: access to these data is available to both registered and non-registered users.
Use of these data is covered by the following licence: When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record.
Data lineage:

Data collected and prepared by European Space Agency (ESA). Downloaded from the Collaborative Hub for use by the UK scientific community.

Data Quality:
Data are as given by the data provider, no quality control has been performed by the Centre for Environmental Data Analysis (CEDA).
File Format:
Image data files are in a binary format. Quicklook images are in png format. Manifest files with relevant metadata are in SAFE format.

Process overview

This dataset was generated by a combination of instruments deployed on platforms and computations as detailed below.

Instrument/Platform pairings

Sentinel 1 Synthetic Aperture Radar (SAR) Deployed on: Sentinel 1A

Computation Element: 1

Title Level 1 processing algorithm applied to Sentinel 1 raw data, Instrument Processing Facility (IPF) v2
Abstract This computation involves the Level 1 processing algorithm applied to raw Synthetic Aperture Radar (SAR) data. This consists of Level 1 preprocessing, special handling for TOPSAR mode, Doppler centroid estimation, Level 1 Single Look Complex (SLC) processing algorithms and Level 1 post-processing to generate the output Single Look Complex (SLC) and Ground Range Detected (GRD) products as well as quicklook images. Level-1 Single Look Complex (SLC) products consist of focused SAR data, geo-referenced using orbit and attitude data from the satellite, and provided in slant-range geometry. Slant range is the natural radar range observation coordinate, defined as the line-of-sight from the radar to each reflecting object. The products are in zero-Doppler orientation where each row of pixels represents points along a line perpendicular to the sub-satellite track. The products include a single look in each dimension using the full available signal bandwidth and complex samples (real and imaginary) preserving the phase information. The products have been geo-referenced using the orbit and attitude data from the satellite and have been corrected for azimuth bi-static delay, elevation antenna pattern and range spreading loss. For more information on the changes for this processing version please see the Sentinel 1 document libary under the docs tab.
Input Description None
Output Description None
Software Reference None
Output Description


  • long_name: Radar
  • gcmd_url:
  • gcmd_keyword: EARTH SCIENCE > Spectral/Engineering > Radar
  • names: EARTH SCIENCE > Spectral/Engineering > Radar,
  • long_name: Radar Imagery
  • gcmd_url:
  • gcmd_keyword: Radar Imagery
  • names:, Radar Imagery

Co-ordinate Variables

Temporal Range
Start time:
End time:
Geographic Extent