Radar simulators

The need for radar simulators for personnel training and evaluation purposes is discussed. The equipment must faithfully reproduce the characteristics of the target as well as of the radar, and the performance specification on the synthetic targets is laid down. Radar pulse widths and repetition rates present no problem. The necessity for a true antenna pattern function generator is considered in some detail. Various methods of analogue computation to determine the position of the targets are discussed. Two computing systems operating from 400 c/s supplies are described.