“Orbit Determination of an LEO Orbiter with Less Than Four Visible GPS Satellites Jan 1, 2015· Sun Kyoung YU Ghangho Kim , Jungbeom Kim and Changdon KEE · 0 min read Last updated on Jan 1, 2015 Authors Ghangho Kim Ph.D ← “Navigation Augmentation in Urban Area with Pseudolite Equipped High Altitude Long Endurance UAV Jan 1, 2015 A New Approach for GNSS Frequency Selection Considering Detection of Cycle Slip Insensitive Pairs of Ionospheric Combination for Dual-Frequency Receivers Jan 1, 2015 →