전리층 보정정보의 구면 조화 함수 생성을 위한 반송파 이중차분 측정치 기반 전리층 지연 보정정보 추정 연구 Jun 21, 2017· Cheolsun Im Byungwoon Park Donguk Kim Changdon Kee , Seungu Seo , Junpyo Park · 0 min read Last updated on Jun 21, 2017 Authors Byungwoon Park Ph.D Authors Donguk Kim Ph.D Authors Changdon Kee Professor ← Accuracy Improvement of DGPS for Low-Cost Single-Frequency Receiver Using Modified Flächen Korrektur Parameter Correction Jul 1, 2017 A Study on GPS/GLONASS Compact Network RTK and Anlaysis on Temporal Variations of Carrier Phase Corrections for Reducing Broadcast May 1, 2017 →