Coding Requirements for the ATC Radar Beacon System

Based on the experience gained during two years of simulation and flight testing of the air traffic control (atc) radar beacon system, this paper outlines the desired functional characteristics of an expanded beacon system for air traffic control and explains the operational factors involved. The expanded system would utilize recent developments in altitude transducers and multichannel activereadout decoding techniques, to provide the air traffic controller with a filtered display incorporating a positive cross reference between aircraft position, identification, and altitude data.