Performance Enhancement and Countermeasure for GPS Failure of GPS/INS Navigation System of UAV Through Integration of 3D Magnetc Vector Sep 1, 2018· Heekwon No Junesol Song Jungbeom Kim Yonghwan Bae Changdon Kee · 0 min read Last updated on Sep 1, 2018 Authors Heekwon No Ph.D Authors Junesol Song Ph.D Authors Jungbeom Kim Ph.D Authors Yonghwan Bae Ph.D Authors Changdon Kee Professor ← L1 SFMC SBAS System to Improve the Position Accuracy of Android Device Sep 1, 2018 Precise Localization Technology of Mobile Phone on a Vehicle in Tunnel using LTE Signal Based Surface Correlation Sep 1, 2018 →