*Gonghui Wang¹, Ning Ma², Issei Doi¹, Gen Furuya³, Naoki Watanabe⁴, Satoshi Ishimaru⁵, Hiromichi Koyasu⁵ (1.Kyoto University, 2.Southwest Jiaotong University, 3.Toyama Prefectural University, 4.Niigata University, 5.Hokkaido Research Organization)