Aerial Surveying by Rapid Methods

Abstract

IN the course of the operations during the War in Palestine, it was found that a very practicable method of making maps was to take a series of air-photographs in long, straight strips, forming a frame work of triangles, or other figures; the detail inside these strips of photographs being filled in by photo graphs taken in parallel flights, so close together that the photographs overlapped. In this system, instead of having three or four points on each photograph, of which the relative positions were accurately fixed, it was possible to work from points fixed at very wide intervals; instead of having four fixed points a square mile, let us say, it was possible to construct a very fairly accurate map with three or four fixed points in a hundred square miles, or even less. It was on this system that the map of Palestine was built up on the scale of 1: 40,000.

Aerial Surveying by Rapid Methods.

By Prof. Bennett Melvill Jones Major J. C. Griffiths. Pp. xvi + 159 + 26 plates. (Cambridge: At the University Press, 1925.) 16s. net.