The NV-EAGLE-3000 is a multi-rotor mapping UAV system with large load, long endurance and automatic route planning. The multi-rotor UAV should be defined as "short-range low-altitude aerial survey UAV system", and its mission is: on the one hand, the aircraft platform is equipped with tilt photography and lidar systems for orthographic, oblique aerial film and laser data acquisition of different resolutions, while obtaining the corresponding data pos information, including longitude, latitude, altitude, route Angle, attitude Angle, etc. On the other hand, the collected information is processed by the ground data processing system to obtain high-precision data models such as ortho, tilt, DEM and DSM. Specifically, LiDAR scanning mapping includes the following techniques: obtaining field data, matching various types of data, correcting and processing adjustment, and processing images. Lidar and tilt photography technology with fast and efficient, flexible, low cost advantages, is slowly subvert the traditional surveying and mapping mode of operation, has become the surveying and mapping industry "new darling".