Development of USV Used in Underground Floors Surveying of the Contaminated Buildings at Fukushima Daiichi NPS. - Tomoki Sakaue; Toru Nagakita; Tomoya Kaneda; Yu Yamashita; Koju Nishizawa; Kenshi Kanbara; Hajime Hanaoka; Shu Shirai; Shiro Kikuchi; Daisaku Uchijima (SSRR, 2022)