*Keita Murata¹, Yasuhide Hobara^1,2,3, Hiroshi Kikuchi², Hiroto Ouchi¹, Jeff Lapierre⁴ (1.Graduate School of Information and Engineering Department of Communication Engineering and Informatics, The University of Electro-Communications, 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, USA)