Development and Preliminary Test Results of Korean WADGPS Test Bed Using NDGPS Infrastructure in Korea Sep 1, 2006· D. Kim Youngsun Yun , B. Sungmin Park , Jeon , Y. Sohn Changdon Kee · 0 min read Last updated on Sep 1, 2006 Authors Youngsun Yun Ph.D Authors Changdon Kee Professor ← Detecting RFI Through Integrity Monitoring at a DGPS Reference Station Sep 1, 2006 Fully Automatic Control from Takeoff to Landing of a UAV Based on a Single-Antenna GPS Receiver Sep 1, 2006 →