MetOp-SG SCA Instrument Thermal Design and Verification

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2020 International Conference on Environmental Systems

"The SCA instrument on MetOp-SG SatB is a 6 beam pulsed real aperture C-band (5.355 GHz) radar in a lambda shaped antenna configuration that measures the Earth’s surface backscatter for each resolution cell from three different directions. The measured backscatter are transferred to wind vectors / soil moisture etc. via Geophysical Model Functions and are used to support Numerical Weather Prediction (NWP) and ocean state forecasts at regional and global scales through the provision of surface wind vector measurements. Airbus DS GmbH Friedrichshafen acts hereby as SCA Instrument Prime with Airbus DS S.a.U. Madrid as responsible for the SCA Antenna Subsystem as SCA Core Team Member. The paper presents the thermal design and thermal verification approach of the SCA sub systems, from electronic units, front-end electronics up to the thermal design and verification of the antenna system. An overview on performed design trades and the resulting final thermal design will be given and how the qualification is performed in view of the large size of the antenna in deployed configuration and the requirements on minimized variation in thermo-elastic deformation over the orbit and over the season. Moreover first results of the STM qualification tests, performed between Nov 2019 and April 2020, will be presented."

Ulrich Rauscher, Airbus Defence and Space GmbH, DE
José-María Garcia Garrido, Airbus Defence and Space, S.A.U., ES
Jose-Luis Pardo Garcia, Airbus Defence and Space, S.A.U., ES
ICES202: Satellite, Payload, and Instrument Thermal Control
The proceedings for the 2020 International Conference on Environmental Systems were published from July 31, 2020. The technical papers were not presented in person due to the inability to hold the event as scheduled in Lisbon, Portugal because of the COVID-19 global pandemic.
Meteorological Operational Satellite Second Generation (MetOP-SG), Shuttle carrier aircraft (SCA), Scatterometer, Thermal design