Development of a High Precision Displacement Measurement System by Fusing a Low Cost RTK-GPS Sensor and a Force Feedback Accelerometer for Infrastructure Monitoring. - Gunhee Koo; Kiyoung Kim; Jun Yeon Chung; Jaemook Choi; Nam-Yeol Kwon; Doo-Young Kang; Hoon Sohn (Sensors, 2017)