Wide Area Differential GPSNov 1, 1996·Changdon Kee,Axalrad,P.,Parkinson,B. W.· 0 min readLast updated on Nov 1, 1996 AuthorsChangdon KeeProfessor Emeritus← Effect of Error in Unit Vector on DGPS Positioning Accuracy Jan 1, 1997미래의 항법장치: 광역위성 항법장치(WAAS) Nov 1, 1996 →