*Koji Wada¹, Jakob Deller², Jessica Agarwal², Hans Martin Braun³, Kieran Carroll⁴, Hannah Goldberg⁵, Martin Jutzi⁶, Özgür Karatekin⁷, Tomáš Kohout⁸, Sampsa Pursiainen⁹, Birgit Ritter⁷, Olaf Roders², Francisco da Silva Pais Cabral¹⁰, Fredrik Sjoberg¹¹, Mika Takala⁹, Esa Vilenius², Patrick Bambach², Ryo Ishimaru¹, Yutaka WADA¹, Masahiko Arakawa¹², Takanao Saiki¹³ (1.Planetary Exploration Research Center, Chiba Institute of Technology, 2.Max Planck Institute, Göttingen, 3.RST Radar System Technik, 4.Gedex Systems Inc, 5.GOMSpace, 6.University of Bern, 7.Royal Observatory of Belgium, 8.University of Helsinki, 9.Tampere University of Technology, 10.GMV, 11.OHB, 12.Kobe University, 13.JAXA)