“Precise Orbit Determination of LEO Satellites with Less than Four Visible GPS Satellites Oct 1, 2014· Sunkyoung Yu Ghangho Kim Changdon Kee · 0 min read Last updated on Oct 1, 2014 Authors Sunkyoung Yu Ph.D Authors Ghangho Kim Ph.D Authors Changdon Kee Professor ← “Performance of Single-antenna GPS-based Attitude integrated with Gyroscope and Magnetometer under GPS Outage Oct 1, 2014 “Smartphone based 3D PDR System Development and its Performance Analysis in Various Indoor Environment Oct 1, 2014 →