41526384c3dd463eb0fc0117b87d08f6 English 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 0bcc2457250548abb51a90f96772c374 dataset NERC EDS Centre for Environmental Data Analysis 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointOfContact 2026-05-06T02:23:32 UK GEMINI 2.3 WGS 84 Sentinel 3A Synthetic Aperture Radar Altimeter (SRAL) Level 1B-S data 2021-07-01T16:06:40 publication 2021-07-01T16:06:40 creation https://catalogue.ceda.ac.uk/uuid/41526384c3dd463eb0fc0117b87d08f6 41526384c3dd463eb0fc0117b87d08f6 NERC EDS Centre for Environmental Data Analysis This dataset contains level 1b (L1B-S) altimetry data from the Synthetic Aperture Radar Altimeter (SRAL) aboard the European Space Agency (ESA) Sentinel 3A Satellite. Sentinel 3A was launched on the 16th of February 2016. These data are fully SAR-processed and calibrated High-Resolution (HR) complex echoes arranged in stacks after slant range correction and prior to echo multi-look (multi-look processing reduces noise by averaging of adjacent pixels, and thereby reduces the standard deviation of the noise level). The L1B-S HR product contains information from Doppler beams data. Hence, it has only been defined for the Synthetic Aperture Radar (SAR) processing chain. The Doppler beams associated with a given surface location (also called stack data) are formed through the selection of all the beams that illuminate a given surface location, and that contribute to each L1B HR waveform. Beams are the result of applying Doppler processing to the waveform bursts, which allows division of the conventional altimeter footprint into a certain number of stripes, thus creating a Delay Doppler Map (DDM). With this, contributions coming from different stripes can be identified and collected separately. When all the contributions from different bursts are collected, a stack is formed. The stack waveforms are provided in In-phase (I) and Quadrature-phase (I/Q) samples (complex waveforms) in the frequency domain. Apart from the Doppler processing, the beams of a stack have also been fully calibrated and range aligned. The L1B-S also includes characterisation parameters about the stack itself. The time tag is given at each surface location (defined throughout the L1 processing chain). Data are provided by ESA and are made available via CEDA to any registered user. Copernicus author unknown author European Space Agency (ESA) author unknown author NERC EDS Centre for Environmental Data Analysis custodian 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk custodian NERC EDS Centre for Environmental Data Analysis distributor 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor European Space Agency (ESA) principal_investigator unknown principalInvestigator NERC EDS Centre for Environmental Data Analysis point_of_contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk pointofContact NERC EDS Centre for Environmental Data Analysis publisher 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk publisher continual dataset Sentinel Synthetic Aperture Radar Altimeter SRAL SAR Sentinel3 orthoimagery theme GEMET - INSPIRE themes, version 1.0 2008-06-01 publication otherRestrictions Public data: access to these data is available to both registered and non-registered users. otherRestrictions Under the following licence https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice, appropriate use of these data may fall under any use. This message is intended as guidance, always read the full licence. When using these data you must cite them correctly using the citation given on the CEDA Data Catalogue record. grid English imageryBaseMapsEarthCover -180.0 180.0 -90.0 90.0 2018-02-01T00:00:00 Data are provided by ESA in zipped SAFE format. NERC EDS Centre for Environmental Data Analysis Data Center Contact 01235446432 RAL Space STFC Rutherford Appleton Laboratory, Harwell Campus Didcot OX11 0QX United Kingdom support@ceda.ac.uk distributor https://catalogue.ceda.ac.uk/uuid/41526384c3dd463eb0fc0117b87d08f6 CEDA Data Catalogue Page Detail and access information for the resource information http://data.ceda.ac.uk/neodc/sentinel3a/data/SRAL/L1_SRA_BS_/ DOWNLOAD Download Data download https://sentinel.esa.int/web/sentinel/toolboxes/sentinel-3 Sentinel 3 Toolbox (S3TBX) No further details. information https://sentinel.esa.int/web/sentinel/user-guides/sentinel-3-altimetry Sentinel 3 Altimetry User Guide No further details. information dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 Data collected and prepared by European Space Agency (ESA). 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