Dataset
Sentinel 1A C-band Synthetic Aperture Radar (SAR): Extra Wide (EW) mode Ground Range Detected (GRD) High Resolution (HR) 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 | 38B
Abstract
This dataset contains Extra Wide swath (EW) Ground Range Detected (GRD) High Resolution (HR) C-band Synthetic Aperture Radar (SAR) data from the Sentinel 1A satellite. Sentinel 1A was lanched 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 provided by the European Space Agency (ESA) and made 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): Extra Wide (EW) mode Ground Range Detected (GRD) High Resolution (HR) Level 1 data. European Space Agency, date of citation. https://catalogue.ceda.ac.uk/uuid/500608c3f0e9428eb624b6bfb6ecf5a8
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
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| Previously used record identifiers: |
No related previous identifiers.
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| Access rules: |
Access to these data is available to any registered CEDA user. Please Login or Register for an account to gain access.
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).
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| 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.
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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:
2014-04-10T23:00:00
End time:
Ongoing
Geographic Extent
90.0000° |
||
-180.0000° |
180.0000° |
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-90.0000° |
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