위성항법(GPS)을 이용한 항공기 자동착륙 시뮬레이션Oct 1, 1997·Doohee YunChangdon Kee· 0 min readLast updated on Oct 1, 1997 AuthorsDoohee YunPh.DAuthorsChangdon KeeProfessor Emeritus← Wide Area Differential GPS (WADGPS) in East Asia Oct 1, 1997Development of Local Ionospheric Time Delay Model for Single-frequency DGPS Users Sep 1, 1997 →