Definition

The aerotriangulation procedure, either graphical or analytical, in which directions from the RADIAL CENTRE, or approximate RADIAL CENTRE, of each overlapping PHOTOGRAPH are used for horizontal-control extension by the successive INTERSECTION and RESECTION of these direction lines. A radial triangulation also is correctly called a radial plot or a minor-control plot. If made by analytical methods, it is called an analytical radial triangulation. A radial triangulation is assumed to be graphical unless prefixed by the word analytical.