A Solution of a Natural way to Implement WADGPS in East Asia : Decentralized WADGPS Oct 1, 1999· Chulsu Pyeong Changdon Kee · 0 min read Last updated on Oct 1, 1999 Authors Chulsu Pyeong M.S Authors Changdon Kee Professor ← A Natural Way to Implement WADGPS in East-Asia: Decentralized WADGPS Oct 1, 1999 Flight Test of DGPS-based Helicopter Landing System and Cockpit Display Oct 1, 1999 →