Dataset
Sentinel 1A C-band Synthetic Aperture Radar (SAR): Extra Wide (EW) mode Ground Range Detected (GRD) Medium Resolution (MR) Level 1 data
Update Frequency: As Needed
Latest Data Update: 2020-04-30
Status: Ongoing
Online Status: ONLINE
Publication State: Published
Publication Date: 2015-06-14
Download Stats: last 12 months
Dataset Size: 534.53K Files | 31TB
Abstract
This dataset contains Extra Wide swath (EW) 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 launched on 3rd April 2014 and provides continuous all-weather, day and night imaging radar data. The EW mode is primarily used for wide area coastal monitoring. The EW 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: Copernicus; European Space Agency (2015): Sentinel 1A C-band Synthetic Aperture Radar (SAR): Extra Wide (EW) mode Ground Range Detected (GRD) Medium Resolution (MR) Level 1 data. Centre for Environmental Data Analysis, date of citation. https://catalogue.ceda.ac.uk/uuid/ca2641a75ea847f7beb38d4e15a282db
Abbreviation: Not defined
Keywords: Sentinel, radar, Synthetic Aperture Radar, SAR, Extra Wide, EW, Ground Range Detected, GRD
Details
| 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: https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice. 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 | None |
- long_name: Radar
- gcmd_url: http://vocab.ndg.nerc.ac.uk/term/P041/4/H420
- gcmd_keyword: EARTH SCIENCE > Spectral/Engineering > Radar
- names: EARTH SCIENCE > Spectral/Engineering > Radar, http://vocab.ndg.nerc.ac.uk/term/P041/4/H420
- long_name: Radar Imagery
- gcmd_url: http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0673
- gcmd_keyword: Radar Imagery
- names: http://vocab.ndg.nerc.ac.uk/term/P141/4/GVAR0673, Radar Imagery
Co-ordinate Variables
Coverage
Temporal Range
Start time:
2015-04-03T05:00:00
End time:
Ongoing
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
|
-90.0000° |
Related parties