Hiroyo Ohya

Radio observation network of Tohoku University

Hiroaki Misawa, Fuminori Tsuchiya, Masato Kagitani, 2014 .

Detection of spread-F echoes in ionograms using machine learning

Yuta Goto, Toshiaki Takano, Hiroyuki Nakata, 2019 .

Development of an automatic procedure to estimate the reflection height of tweek atmospherics

Kazuo Shiokawa, Hiroyo Ohya, Yoshizumi Miyoshi, 2008 .

Daytime tweek atmospherics

Kazuo Shiokawa, Hiroyo Ohya, Yoshizumi Miyoshi, 2015 .

Equivalent electron densities at reflection heights of tweek atmospherics in the low-middle latitude D-region ionosphere

Yasuhiro Murayama, Kiyoshi Igarashi, Hiroyo Ohya, 2003 .