Masters Student Dong Uk Kim, Ph.D. Student Deok Hwa Han and Dr. Youn Ho of SNU Mechanical and Aerospace Engineering’s GNSS Lab (Professor Chang-Don Ki) has claimed  Excellent Paper Awards in the 2014 KISS Conference with the presentation of a research titled “Ionosphere Delay Calculation Performance Analysis of Single Frequency SBAS Users Through Multiple Sat-Nav Systems” held in Dae Jeon Mokwon University last 17^th of October 2014.