The BB4 UAV is a high-end multirotor drone optimized for the CHCNAV AlphaUni 300/900/1300 LiDAR scanner series. Its 7 kg payload breaks the capacity barrier, and over 45 minutes of flight time redefines the LiDAR airborne survey ability. In addition, the dual DJI A3 IMUs and GNSS units provide reliable centimeter RTK positioning, meeting the demand for high accuracy in the geospatial and mapping industry.