Preprints
https://doi.org/10.5194/amt-2021-342
https://doi.org/10.5194/amt-2021-342

  24 Nov 2021

24 Nov 2021

Review status: this preprint is currently under review for the journal AMT.

End to end simulator for the WIVERN W-band Doppler conically scanning spaceborne radar

Alessandro Battaglia1,2,3, Paolo Martire1, Eric Caubet4, Laurent Phalippou4, Fabrizio Stesina1, Pavlos Kollias5,6, and Anthony Illingworth7 Alessandro Battaglia et al.
  • 1Politecnico of Torino, Italy
  • 2University of Leicester, UK
  • 3National Centre for Earth Observation, UK
  • 4Thales Alenia Space, Toulouse, France
  • 5Department of Environmental and Climate Sciences, Brookhaven National Laboratory, Upton, NY, USA
  • 6Division of Atmospheric Sciences, Stony Brook University, Stony Brook, NY, USA
  • 7University of Reading, Reading, UK

Abstract. The WIVERN (WInd VElocity Radar Nephoscope) mission, soon entering in Phase-0 of the ESA Earth Explorer program, promises to complement Doppler wind lidar by globally observing, for the first time, vertical profiles of winds in cloudy areas. This work describes an end to end simulator of the WIVERN conically scanning 94 GHz Doppler radar, the only payload of the mission. Specific features of the simulator are: the conically scanning geometry; the inclusion of cross-polarization effects and of the simulation of a radiometric mode; the applicability to global cloud model outputs via an orbital model; the incorporation of a mispointing model accounting for thermo-elastic distortions, microvibrations, star-trackers uncertainties, etc.; the inclusion of the surface clutter. Some of the simulator capabilities are showcased for a case study involving a full rotational scan of the instrument.

The simulator represents a very useful tool for studying the performances of the WIVERN concept and possible trade-offs for the different configurations (e.g. different antenna sizes, pulse lengths, antenna patterns, .....). Thanks to its modular structure the simulator can be easily adapted to different orbits, different scanning geometries and different frequencies.

Alessandro Battaglia et al.

Status: open (until 12 Jan 2022)

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Alessandro Battaglia et al.

Alessandro Battaglia et al.

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Short summary
We present an instrument simulator for a new sensor, WIVERN, a conically scanning radar payload with Doppler capabilities, recently downselected as one of the four candidates for the European Space Agency Earth Explorer 11 program. The mission aims at measuring horizontal winds in cloudy areas. The simulator is instrumental in the definition and consolidation of the mission requirements and the evaluation of mission performances.