*Hiroto Ouchi¹, Yasuhide Hobara^1,2,3, Hiroshi Kikuchi^1,2, Debrupa Mondal¹, Jeff Lapierre⁴ (1.Graduate School of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan, 2.Center for Space Science and Radio Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan, 3.Research Center for Realizing Sustainable Societies, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 1828585, Japan,, 4.Earth Networks, Germantown, MD 20874, USA)