1. CommSensLab Research Group, Polytechnic University of Catalonia, Barcelona, Spain
2. Department of Physical Oceanography, Institute of Marine Sciences, CSIC and Barcelona Expert Center, Passeig Maritim de la Barceloneta, Barcelona, Spain
3. Zenithal Blue Technologies S.L.U., European Space Agency, Barcelona, Spain
4. European Space Research and Technology Center, European Space Agency, AG Noordwijk, The Netherlands