GPS 수신기를 이용한 전리층 시간지연측정 및 L1/L2 오차의 추정 Apr 1, 1997· Doohee Yun Changdon Kee · 0 min read Last updated on Apr 1, 1997 Authors Doohee Yun Ph.D Authors Changdon Kee Professor ← Algorithms and Implementation of Wide Area Differential GPS Apr 1, 1997 Estimation of Multipath Error in GPS Pseudorange Measurements Mar 1, 1997 →