Accuracy Improvement of DGPS for Low-Cost Single-Frequency Receiver Using Modified Flächen Korrektur Parameter Correction. - Jungbeom Kim; Junesol Song; Heekwon No; Deokhwa Han; Donguk Kim 004; Byungwoon Park; Changdon Kee (ISPRS Int. J. Geo Inf., 2017)

Improving the Accuracy of Regional Ionospheric Mapping with Double-Difference Carrier Phase Measurement. - Deokhwa Han; Donguk Kim 004; Junesol Song; Changdon Kee (Remote. Sens., 2019)

A New Method to Improve the Detection of Co-Seismic Ionospheric Disturbances using Sequential Measurement Combination. - Seonho Kang; Junesol Song; Deokhwa Han; Bugyeom Kim; Hyoungmin So; Kap-jin Kim; Changdon Kee (Sensors, 2019)