Multi-radio integrated navigation system M&S software design for GNSS back-up. - Junhak Lee; Heyone Kim; Dong-Hwan Hwang; Sang-Heon Oh; Hyoungmin So (PLANS, 2018)

Note on Coarse Alignment of Gyro-Free Inertial Navigation System. - Heyone Kim; Jae-Hoon Son; Sang-Heon Oh; Dong-Hwan Hwang (Sensors, 2023)