Direct RF Sampling Hyperspectral Microwave Radiometer (DSμRAD) for Ground Use. - Takashi Maeda; Noriyuki Kawaguchi; Ken-Ichi Harada; Kensuke Ozeki; Yuichi Chikahiro; Hirofumi Onuki; Yoshinori Hayashi; Kenji Ema; Kazuhiro Naoki; Masashige Nakayama; Tadashi Takano (IEEE Geosci. Remote. Sens. Lett., 2021)