What is known as the distance the plane flew between overlapping exposures in aerial photography?

The term used to describe the distance the plane flew between overlapping exposures in aerial photography is known as the Air Base. This concept is critical in aerial surveying because it defines the overlap between two consecutive aerial images taken from an aircraft. The Air Base provides essential information for photogrammetry, which is the technique used to obtain accurate measurements from photographs.

By ensuring adequate overlap, which is often around 60-80%, surveyors can accurately stitch together the images to create detailed maps or 3D reconstructions of the terrain. This overlap allows for the accurate parsing of topographical details and aids in minimizing distortions caused by the angle of capture.

Other terms listed do have their own specific applications in aerial photography and surveying. For instance, Fiducial Marks are used as reference points on a photographic plate or digital image to facilitate measurements, and the Principal Point refers to the point where the optical axis of the camera intersects the photograph. Aeronautical Base, while it sounds relevant to aviation, is not a standard term used in this context. Understanding these terms helps in grasping how aerial photography is interpreted and utilized in surveying and mapping.