The system passes signals between the base and mobile stations via the A3 flight controller during flight, and utilize the D-RTK antennas to access GPS + GLONASS via a dual-positioning module for centimeter-level, precision 3D positioning, enhanced altitude accuracy, and a true heading that is resistant to magnetic interference. For additional flight management, drone calibration, and more, D-RTK supports both the DJI GO and Assistant 2 apps.