Research interests: -. Radar remote sensing of earth terrain: soil moisture, surface roughness, and vegetation. Positions: -. Professor Emeritus, Hongik University, Seoul, Korea. -. IEEE Life Fellow -. KIEES Fellow Experiences -. 1994~2022: Profesdor, Hongik University, Seoul, Korea -. 2019~2018: Visiting Professor, Technion, Haifa, Israel. -. 2009~2010: Visiting Professor, Stanford University, CA, USA Education: 1993: PhD, University of Michigan, Ann Arbor, Electrical Engineering, MI, USA. 1988: MS, University of Missouri, Rolla, MO, USA. 1982: BS, Yonsei University, Seoul, Korea.