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SCOOP (SAR Altimetry Coastal & Open
Ocean Performance)
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News:
Kick Off Meeting: 9th October 2015
Mid Term Review: 29-30 November 2016, University of Porto
SCOOP Test Data Set available for Research Use
(see letter)
Introduction:
SCOOP (SAR Altimetry Coastal & Open Ocean
Performance) is a project funded under
the ESA SEOM (Scientific
Exploitation of Operational Missions)
Programme to characterise the expected performance in the open
ocean and coastal zone of the Sentinel-3
SAR altimeter product generated by the current processing baseline;
and then to test, implement and evaluate improved retrieval methods.
The general
objectives
of the SCOOP are:
- to accurately characterise the expected performance
of Sentinel-3 SRAL SAR mode altimeter products over the open ocean and
coastal zone.
- to develop and evaluate enhancements to the current
baseline Sentinel-3 SRAL SAR data processing schemes, in order to
provide improved performance over the open ocean and in the coastal
zone.
- to support correct interpretation and application of
SRAL SAR L1 products by providing clear technical information on these
products and their processing to the user community.
- to provide recommendations for further developments
and implementations through a scientific roadmap.
In addition there are specific objectives for the Open
Ocean and Coastal Zone studies
as follows:
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SCOOP Open Ocean Study Aims
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- To characterise the performance of Cryosat-2 SAR mode
data in the open ocean using the Sentinel-3 processing baseline applied
to Cryosat-2 FBR data
- To carry out investigations on simulated Sentinel-3
data (generated by the Sentinel-3 SPS) in order to evaluate the
expected performance of Sentinel-3 over the open ocean
- To develop, test and implement modifications to the
processing of the L1B-S product (Stack of Delay Doppler beams) to the
L1B product (multi-looked SAR echo) not currently implemented in the
Sentinel-3 ground segment (such as zero-padding, multi-looking, antenna
pattern compensation, stack beam weighting), and improvements to the
implementation of the SAR echo model in the re-tracking of the SAR echo
to generate the L2 product. Evaluate the performance of products
generated by this modified processing chain and make recommendations
with regard to future implementation.
- To carry out a study into the dependency of SAR
altimeter data on swell (amplitude, direction and wavelength).
- To propose a solution for a SAR mode Sea State Bias
correction for the open ocean. This will take into account, and build
on, findings from a parallel study being funded by EUMETSAT (EUMITS ITT
No.14/209556 "Jason-CS SAR Mode Sea State Bias Study”), evaluate these
findings and propose an approach to be applied to Sentinel-3.
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SCOOP Coastal Zone Study Aims
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- To characterise the performance of Cryosat-2 SAR mode
data in the coastal zone using the Sentinel-3 processing baseline
applied to Cryosat-2 FBR data.
- To carry out investigations on simulated
Sentinel-3 data (generated by the Sentinel-3 SPS) in order to evaluate
the expected performance of Sentinel-3 over the coastal zone.
- To develop, test and implement modifications to the
processing of the L1B-S product (Stack of Delay Doppler beams) to the
L1B product (multi-looked SAR echo) not currently implemented in the
Sentinel-3 ground segment (such as zero-padding, burst weighting
window, higher posting rate). Evaluate the performance of products
generated by this modified processing chain and make recommendations
with regard to future implementation
- Through a study into SAR stack data exploitation
investigate techniques to improve performance close to the coastline by
developing techniques to identify and discriminate against the impact
of land contamination of the nadir ocean echo.
- To develop, test and implement coastal retrackers for
Sentinel-3 SAR and RDSAR data.
- To investigate how the orientation of the ground
track with respect to the coastline, and the proximity of the land
affect the performance of Sentinel-3 SRAL data.
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