F9P RTK module is a high-accuracy centimeter-level four-satellite multi-frequency navigation and positioning system developed for flight control systems. Through real-time kinematic positioning technology,the 3D positioning accuracyisimproved from meter level to centimeter level. lt integrates positioning, altitude detection and dual-module direction finding functions. RTK technology makes up for the shortcomings of traditional GPS, barometer, and magnetic compass, enables UAVs to adapt to complex magnetic field environments, and provides accurate and reliable systematic solutions for high-accuracy applications.