Introduction to the steps of aerial surveying and mapping
- 1. Introduction to the steps of aerial surveying and mapping Surveying and mapping is the most widely used field of industrial-grade drones. It can be widely used in many fields such as national basic surveying and mapping, digital city construction, land and resources survey, and address environmental survey. MMC mapping UAV solution, through the ortho camera, tilt camera, photoelectric pod, laser radar and other equipment, can quickly obtain 3D models and images of the terrain surface, perform high-precision mapping and inspection tasks, can be used for mapping The unit saves a lot of time and capital costs. For the specific application to the supervision of illegal buildings, it is possible to obtain image data in real time by shooting the surveillance area with a tilt camera, and compare it with the previous data to discover the behavior of suspected illegal land use and timely grasp the land change pattern. Then, for the operation of the mapping drone, let me give you a brief introduction today. 1. Determine weather conditions UAV aerial survey, the weather conditions are good or bad. Before starting the aerial photography, it is necessary to grasp the weather conditions of the day and observe the thickness of the clouds, the illumination and the visibility of the air. Observe the thickness of the clouds.
- 2. 2. Arrive at the take-off location After determining the weather conditions and the distribution of clouds, it is suitable for aerial photography, and bring the drones, catapults, radio stations, computers and other related equipment to the aerial take-off point. The take-off point is usually inspected in advance, requiring the site to be relatively flat, without wires, high-rise buildings, etc., and determine the order and sequence of aerial photographs in advance. 3. Determine the wind speed at the scene After arriving at the scene, the wind speed was measured. 4, set up the catapult In order to ensure the aircraft take off smoothly, the catapult is generally erected against the wind. 5. Setting up a radio station is used for communication between ground stations and drones. 6, the day's job log Record the wind speed, weather, takeoff and landing coordinates and other information on the day, keep the future data reference and analysis summary. 7, attitude angle adjustment For take-off locations that are more than 200km from the last take-off location, the attitude and angle of the aircraft must be adjusted to ensure accurate communication.
- 3. 8, the drone is placed on the catapult During installation, it is necessary to check whether the components of the drone are tightly connected, whether the power supply wiring of the ejection frame is properly connected, and the power is sufficient. 9. Manual remote control test Set the flight mode to the manual remote flight state to test whether the nose, fuselage and rear wing can be operated according to the instructions. The manual remote control mode is mainly used for emergency treatment when the drone takes off and land in case of special circumstances. 10. Prepare before takeoff. Before taking off, check whether the aerial camera and the flight control system are connected. The parachute bag is on standby, parallel to the wind direction, and no personnel vehicles are moving. 11, the drone takes off After the preparations are completed, you can take off. At this time, the operator should hold the manual lever to stand by, observe the situation on the spot, and manually adjust the attitude and flight height of the aircraft at any time as needed. Release order, take off 12. Flight monitoring This process mainly does three tasks: 1 monitoring the altitude, speed and flight path; 2 monitoring the engine speed and airspeed, ground speed; 3 checking the number of photo shots at any time.
- 4. 13, drone landing After the drone has completed the aerial flight according to the set route, it landed at the designated location. The manual remote control operator is on standby at the designated place, and the landing site is adjusted in time when the windy scene and the personnel move around at the landing site. 14, data export check After landing, the photo data and the aircraft as a whole are inspected and evaluated, combined with the line rate and attitude angle to determine whether or not to go around, and continue to complete the aerial mission or transition in the nearby area. Theoretically, the flight control range of a landing point is 300 square kilometers. . Copy flight data and aerial photography of drones. Nationally, UAV remote sensing technology has been applied to rural land rights determination work many times. The technology is mature, not only the accuracy of the results is much better than the traditional measurement method, but also the work time is greatly shortened. It has reduced the workload of rural grassroots management personnel, saved manpower and material resources, and is worth promoting in the work of rural land security. The surveying and mapping drone is serving all aspects of economic and social development with its high mobility, cost-effectiveness and high security.
- 5. MMC Griflion M8 is a vertical take-off and landing (VTOL) fixed-wing UAV with the V-shape tail that is made of carbon composite material. Griflion M8 is capable of long-distance cruise flying and features long duration time, fast cruising Speed, and high working efficiency, etc. Griflion M8 is compatible with the orthographic camera, the oblique camera, zoom camera and electro-optical pod to run a high precision surveying and mapping or patrol mission.