“…For example, major agricultural machinery manufacturers, such as John Deere, Case IH, Yanmar, and New Holland, developed autonomous driving technology or have a concept/plan to carry it out, and more than 20 of the projects are underway across the world [2,3]. John Deere presented an autonomous tractor, the 8320 [9] GNSS-RTK Automatic steering system 2.5-6.9 cm Germany Gan-Mor et al [10] GNSS-RTK tractor Centimeters Israel Han et al [11] single-frequency GNSS-RTK speed sprayer Centimeters Korea Noguchi et al [13] GNSS-RTK, a fiber optic gyroscope (FOG) and an IMU autonomous driving robot 3 cm Japan Takai et al [14] GNSS-RTK and an IMU crawler-type tractor 5 cm Japan Xiang et al [15] GNSS-RTK and IMU rice transplanter Less than 10 cm China Recently, advances in micro electromechanical system (MEMS) technology have led to the development of a small and inexpensive MEMS-IMU, and the performance of the MEMS-IMU is being improved [16]. In addition, the performance of a low-cost GNSS-RTK module is improving due to advances in the multi-GNSS positioning technique using GPS, a global navigation satellite system (GLONASS), BeiDou, Galileo, and a quasi-zenith satellite system (QZSS).…”