Ryo Natsuaki received the B.S., M.S., and Ph.D. degrees in electrical engineering from The University of Tokyo, Tokyo, Japan, in 2009, 2011, and 2014, respectively. He was an Aerospace Project Research Associate of the Japan Aerospace Exploration Agency, Tokyo, from 2014 to 2017. He is currently a Lecturer with the Department of Electrical Engineering and Information Systems, The University of Tokyo. He is also a Guest Scientist with German Aerospace Center (DLR) by JSPS Overseas Research Fellowships from 2018 to 2020. His research interests include active remote sensing with synthetic aperture radar. Dr. Natsuaki is a member of the IEEE Geoscience and Remote Sensing Society (GRSS) and the Institute of Electronics, Information and Communication Engineers (IEICE). He currently serves as an Assistant Secretary of the IEICE Technical Committee on Space, Aeronautical, and Navigational Electronics.