What are the components of UAV photographic aerial survey system?

Commonly used photography platforms include light aircraft, manned helicopters, unmanned airships, drones, balloons and so on. Low-altitude photogrammetry has the characteristics of fast extraction, short production cycle, low operating cost and strong operability. Especially, the low-altitude photography system developed in recent years takes unmanned aerial vehicle as remote sensing platform and digital remote sensing equipment as task load. Supported by the rapid processing system of remote sensing data, it is a miniaturized, specialized, highly mobile and low-cost remote sensing system. It has a series of advantages such as good security and simple operation. The requirements for the landing site are not high, and the task equipment is easy to install; Can fly at low altitude and low speed; It is an effective and practical technology to hover the landmark buildings on the ground to ensure the high resolution of the remote sensing images of buildings and ground targets. UAV remote sensing is an important way of aerial remote sensing, and it is increasingly becoming an important means of spatial data acquisition. It has the advantages of long battery life, real-time image transmission, high-risk area detection, low cost and flexibility, and is a powerful supplement to satellite remote sensing and manned aerial remote sensing.

The low-altitude digital aerial photography system of UAV generally consists of four parts: ground system, flight platform, digital remote sensing image acquisition system and data processing. The ground system includes vehicles for transporting ultralight aircraft, combat command and logistics support vehicles, etc. The flight platform includes UAV, maintenance system and communication system. Digital remote sensing image acquisition system includes power supply, GPS autonomous navigation and aerial photography management system, digital aerial camera (digital aerial camera), miniature stable platform system, control and recording system, etc. The data processing system includes aerial photography design, aerial photography inspection, aerial survey, orthorectification, stereo mapping and so on.