In recent years, the industry of aerial photo drone has been developed quickly and has made great progress. Some products have already been exported abroad. In contrast, aerial remote sensing technology is a new technology developed on the basis of remote sensing technology, with the advantage that it can get the data of geographical location quickly and accurately. The principle of aerial remote sensing technology is to install aeronautical digital cameras on aerial photo drone and use related technologies to carry out related aerial photography. The operation height of this technique is less than 1000 meters. Now, the application of aerial remote sensing technology is used more and more widely. It has become a necessarily important technical support in our country. It not only accumulates a lot of technical resources for our country's surveying and mapping industry, but also promotes the development of our society. Aerial mapping technology has also been adopted in surveying and mapping engineering in China mainly in the digital city construction.
1 Mapping of topographic maps. First, the precision is required according to the topographic map, and the angle and resolution of the aerial photo drone
are adjusted. After shooting the Orthophoto Image, the mapping software is used to synthesize.
2 New rural construction surveying and mapping. The most important thing is to survey the house, electricity, traffic and so on. In the investigation, the length of the border should be drawn according to the specific conditions, and the correction will be carried out continuously so that the measurement data of the house will be more accurate. Mapping should also be carried out according to the New Rural Construction Surveying And Mapping Support Service Technical Outline.
3 Land expropriation measurement. The land expropriation is to convert all the land into the country's land, and then to measure the land, which is mainly to protect the national land and provide a strong data support for the economic construction. Generally speaking, there are many disputes between villagers and between villagers and collectives. Especially when the slope of land acquisition is relatively large, the villagers are measuring according to their own standards, which is not feasible. Accurate measurements should be made according to the national standards. If using aerial survey and using orthophoto map to plot the land, the contradiction between villagers will be reduced, and they will prefer this way.
4 Earthwork measurement. You may also be very curious. How does an aerial survey calculate the amount of earth and rock? In fact, the UAV in the flight process, there will be a fixed height, called the altitude of the flight, the altitude of the flight is to maintain a certain distance from the ground, so it can get its flight path, then can get to the elevation value, PostFlightTerra3D software then can be implement. .