Marco Chini, Luxembourg Institute of Science and Technology, Luxembourg; Carlos Lopez-Martinez, Universitat Politècnica de Catalunya (UPC), Spain; Nazzareno Pierdicca, Sapienza University of Rome, Italy; Charles Werner, Gamma Remote Sensing AG, Switzerland; Miriam Machwitz, Christian Bossung, Jean François Iffly, Olivier Faber, Philippe Pinheiro, Patrick Matgen, Luxembourg Institute of Science and Technology, Luxembourg; Julia Kubanek, European Space Agency, Netherlands