C.R.T. display of alpha-numeric information applied to radar data handling

The problem of extracting and classifying the large volume of information presented by a long-range radar is discussed, and the types of information an operator may require to have displayed to him in alpha-numeric form on the radar c.r.t. are detailed. The necessity to time-share the beam deflection circuits between many signal sources makes a high speed writing method essential. Several methods are considered, and one using digital techniques is examined in detail. The writing speed attainable is a function of the screen positions in which consecutive digits are to be presented, but may reach 3 × 104 characters per second.