Abstract :
This paper describes a system whereby the cathode-ray tube of a radar display is photographed, and the exposed film rapidly processed and projected so that a large bright high contrast theatre-type presentation of the radar display is obtained. The picture is renewed automatically every few seconds. Either front or rear projection can be employed with a horizontal plotting table or a vertical screen. Mention is made of the use of colour film. Examples of the application of this system to air traffic control and marine and harbour radar are given and the operational advantages of such a system in these fields are discussed. In particular the 16 mm ra processor and projector system installed in the S.S. Canberra is described.
