Abstract: To realize the unmanned and high-precision positioning of agricultural machinery, a high precision positioning system of unmanned agricultural machinery was designed. The remote control center system based on Pixhawk flight controller, including sensor module, communication module, satellite positioning and other modules, and was mainly responsible for setting up the agricultural machinery work place, travel route and operation mode. The system was based on high-precision navigation technology, which enables the agricultural machinery to accurately and quickly reach the task point and work. Moreover, the NuttX was used in software design for operating the secondary development to improve the system’s extended functions.

Key words: positioning, precision agriculture, unmanned, high precision