Modified Tomographic Estimation of the Ionosphere using Fewer CoefficientsMay 1, 2004·Youngho SohnChangdon Kee· 0 min read DOILast updated on May 1, 2004 AuthorsYoungho SohnPh.DAuthorsChangdon KeeProfessor Emeritus← The Need for Range Rate Correctionsin DGPS Correction Messages Sep 1, 2004Line-of-Sight 단위벡터 오차가 의사위성 항법시스템에 미치는 영향 분석 Apr 1, 2004 →