“A Combined Numerical-Empirical Orbit Propagation Algorithm for Satellite Tracking and Backup Navigation System Jan 1, 2012· Ghangho Kim Sanghoon Jeon Chongwon Kim Deokhwa Han Changdon Kee · 0 min read Last updated on Jan 1, 2012 Authors Ghangho Kim Ph.D Authors Sanghoon Jeon Ph.D Authors Chongwon Kim Ph.D Authors Deokhwa Han Ph.D Authors Changdon Kee Professor ← 의사위성의 펄싱방법에 대한 GPS 소프트웨어 수신기의 L1, L2C 신호획득 성능분석 Feb 1, 2012 “A New Concept of APNT: MOSAIC/DME 3D- Positioning with a Single DME Station Jan 1, 2012 →