Development of model radar systems between 30 and 900 GHz

Practical use has been made of frequencies above 30 GHz for the last 20 years in the UK National Radar Modelling Facility to investigate the characteristics of radar reflections from typical radar targets. This paper discusses the purposes, principles and methods of radar scale modelling. It also describes the several different types of measuring radar which are being used at frequencies up to 890 GHz to investigate various aspects of radar scattering. Some comments are made on methods of data reduction to simplify their use in the investigation of real radar problems. Possible future trends towards operation at frequencies up to 2 THz are indicated.