A Preliminary Study of Korean Dual-Frequency SBAS Mar 1, 2014· Ho Yun Deokhwa Han Changdon Kee · 0 min read DOI Last updated on Mar 1, 2014 Authors Ho Yun Ph.D Authors Deokhwa Han Ph.D Authors Changdon Kee Professor ← A Pseudolite-Based Positioning System for Legacy GNSS Receivers Apr 1, 2014 “Improvement of DGPS Positioning Accuracy for Low Cost Receiver using FKP Correction Message Jan 1, 2014 →