[PPS08-10] Permittivity of subsurface on Mars and its importance for electromagnetic wave reflection method such as radar sounder and ground penetrating radar *小林 真輝人1、新原 隆史1、宮本 英昭1、熊本 篤志2、西堀 俊幸3 (1.東京大学、2.東北大学、3.JAXA)