Surveying and mapping drone aerial survey operation diagram

In rural land security, the local government departments provide local image maps with low resolution and insufficient precision, which cannot be used as a working base map. In order to obtain a suitable image map of the scale, the low-altitude aerial photography technology of the UAV has become the most important means at present. The surveying and mapping drone can perform full coverage aerial photography with a resolution of 0.05 meters, select the ground control point for orthorectification, improve the geometric accuracy of the image, enhance the interpretability, and make the current situation strong, high precision and accurate positioning. : Orthographic image of 1000 scale.

The surveying and mapping drone aerial photography team can be equipped with 2-3 people. After the aerial photography task is finished, the data will be checked. After passing the test, the subsequent data processing can be performed. In order to give readers a more intuitive experience, we went to Lanzhou, Gansu, to take pictures of the P700E UAV operation scene in the field, and detailed the operation process of mapping UAVs in rural land confirmation, hoping to benefit your work and study. .

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 light and the visibility of the air.

Observe the thickness of the cloud

2. Arrive at the take-off location

After determining the weather conditions and cloud distribution for aerial photography, 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 a relatively flat site, no wires, high-rise buildings, etc., and the aerial order and sequence are determined in advance.

3. Determine the wind speed at the scene

After arriving at the scene, the wind speed was measured. The China P700E mapping UAV can withstand 6 wind speeds and adapt to temperatures between minus 20 ° C and 60 ° C.

Measuring site wind speed


4, set up the catapult

In order to ensure the aircraft take off smoothly, the catapult is generally erected against the wind. The P700E adopts the configuration of the integrated ejection frame, which has small requirements on the site and strong adaptability to the terrain. Compared with other products, the design of the projectile rope is more convenient and quicker, and at the same time guarantees the safety of the operator to the greatest extent.

Erection of the ejection frame

5, set up a radio station

The radio is used for communication between the ground station and the drone. At this stage, most surveying and mapping drones use radio to exchange data between drones and ground stations. The high-frequency radio of P700E can conduct ultra-long-distance monitoring of up to 50 kilometers to ensure safe and efficient operation of the aircraft.

Set up a radio station

6, the day's job log

Record the wind speed, weather, takeoff and landing coordinates and other information on the day, and keep a reference for future data reference and analysis.

7, attitude angle adjustment

For departure points 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. The drone machine is equipped with electronic compass, magnetic calibration and other equipment to ensure the self-attitude control of the aircraft during flight. Due to the different geomagnetic conditions, the P700E self-contained calibration system is used to deal with different geomagnetic conditions. Human-machine interference and safety hazards.

Determine control point coordinates and flight angle

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.

Install drone to catapult

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