What is the difference between aerial digital imaging system and ordinary digital camera in calibration?

Aerial photogrammetry (also known as aerial digital imaging system) is an ancient subject, which uses a special camera installed on the plane to shoot the ground at a certain height. Of course, there are many technical requirements. Using photographic data, technicians can carry out corresponding topographic survey and other technical analysis.

The principle of aerial digital imaging system is the same as that of ordinary digital camera in calibration, but the shooting range of aerial digital imaging system is very wide. In addition to the calibration of ordinary digital cameras, we should also consider the earth's surface correction, because the earth's surface is not flat. Please refer to the books on measurement for details.