| |
Research
EPS Second Generation scatterometer
Following the succesful series of C-band scatterometers, EUMETSAT started the
process of defining the next generation scatterometer, i.e., for the
EUMETSAT Polar System Second Generation (EPS SG; see related link). ESA's role
is to design and build the EPS system based on the EPS SG mission
requirements of EUMETSAT. Therefore, ESA led a project to simulate the
wind performance of scatterometer systems considered for EPS SG,
wherein KNMI participated.
For supporting the instrument concept elaboration by the industrial
study teams during EPS SG Phase 0, KNMI has developed retrieval
algorithms tailored to those concepts, derived from the ASCAT
operational algorithms. Moreover, specific metrics were defined to
characterize the associated retrieval performance. The metrics used for
the performance assessment were:
- Wind vector RMS error
- Ambiguity susceptibility
- Wind biases
The end-to-end performance evaluation makes use as input of an ensemble
of wind-fields having a climatological distribution, generates the
output wind-fields which account for the measurement system
imperfections and geophysical noise, and computes the performance
metrics.
KNMI concludes that that two concepts are able to meet the observation
requirements of EPS SG, namely a fixed fan beam scatterometer and a
rotating fan beam scatterometer. A pencil-beam C-band scatterometer
would not fulfil the EPS SG requirements.
The concepts studied are VV polarisation and performance assessment of
concepts including horiziontal polarization are still under
consideration.
Please contact us for your
comments or your interest in the EPS SG scatterometer simulator
software.
Available documents
Belmonte Rivas, M., J. de Kloe and A. Stoffelen,
Study of an Objective Performance Measure for Spaceborne Wind Sensors
Document external project: 2010, ESA Contract No. 18041/04/NL/AR, 2010.
Complete text (pdf)
Lin, C.C., M. Betto, M. Belmonte Rivas, A. Stoffelen and J. de Kloe,
Post-EPS Wind Scatterometer concept trade-offs and wind retrieval performance assessment
2010 EUMETSAT Meteorological Satellite Conference, 20/9/2010-24/9/2010, EUMETSAT (Ed), 2010, Cordoba, Spain, EUMETSAT, EUMETSAT, ISBN 978-92-9110-089-7.
Complete text (pdf)
Stoffelen, A., M. Belmonte Rivas and J. de Kloe,
On Performance Measures for Spaceborne Wind Sensors
Presentation: International Ocean Vector Winds Science Team, 18/5/2010-22/5/2010, Barcelona, CSIC (int.).
Egger, G. and M. Belmonte Rivas,
Post-EPS Competing Scatterometer Designs: ASCAT versus RFSCAT
ARSI - Advanced RF Sensors and Remote Sensing Instruments, 16/11/2009-18/11/2009, 2009, Noordwijk (The Netherlands), European Space Agency.
Complete text (pdf)
Stoffelen, A., M. Belmonte-Rivas and J. de Kloe,
Scatterometer wind retrieval simulator and figure of merit
Presentation: The China-French CFOsat science team meeting, 13/10/2009-15/10/2009, Xi'an, China, CNSA/SOA (int.).
Complete text (pdf)
Further information
Please contact
Ad Stoffelen.
| |
Near real time Wind Products
OSI SAF Wind Climate Data Records
Discontinued Wind Products
Software
R&D work
Projects
Related links
|
