What is Surveying and Mapping Aerial Photography

May 25, 2023

Surveying and mapping aerial photography is the use of aerial photography to obtain the image data of the target object, which can be subdivided into frame aerial photography, push-broom aerial photography, oblique aerial photography, lidar aerial photography, hyperspectral aerial photography, and synthetic aperture radar aerial photography. aerial photography, thermal infrared aerial photography, and multi-spectral aerial photography.

Frame aerial photography

Frame aerial photography acquires rich information, simple process flow, and convenient follow-up work.

Push-broom aerial photography

The push-broom aerial photography uses the push-broom detector to obtain the scanning line of digital images, and obtains a group of adjacent rows of images through the movement of the detector integrated carrying platform along the course, and thus constitutes a photography process of a larger continuous image.

Tilt aerial photography

Oblique aerial photography collects images synchronously from one vertical, four oblique, and five different viewing angles, and obtains rich high-resolution textures of building top surfaces and side views.

LiDAR aerial photography

The density of laser point cloud data obtained by lidar aerial photography is relatively high, and the accuracy is very high. These data can directly check the three-dimensional coordinate characteristics of laser points and effectively establish digital elevation models.

Hyperspectral aerial photography

A spectral image with a spectral resolution in the range of 10l is called a hyperspectral image.

Synthetic Aperture Radar aerial photography

Synthetic aperture radar aerial photography is to use a small antenna to move rapidly along the trajectory of a long linear array and radiate coherent signals, and coherently process the echoes received at different positions to obtain a higher-resolution imaging radar.

Thermal infrared aerial photography

Thermal infrared aerial photography is to use various detectors to receive infrared radiation emitted by objects, then process photoelectric information, and finally display it in the form of numbers, signals, images, etc.