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A MATHEMATICAL ANALYSIS OF THE PERFORMANCE OF THE ATC RADAR BEACON SYSTEM,
AIRBORNE INSTRUMENTS LAB DEER PARK N Y
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A mathematical model representing the current New York environment affecting the capacity of the Air Traffic Control Radar Beacon System was developed for 21 stations to evaluate the effects upon system performance when 1 changes are made in system parameters and 2 various combinations of system improvements are incorporated. The combined effect of all stations on the reply rate from any aircraft in the area is calculated as well as the aircraft information available for display and utilization at the Idlewild enroute beacon station. To indicate the optimum future configurations, the computations are performed for combinations of 1 the basic system and three different sidelobe suppression techniques, 2 receiver subtraction, 3 single and double defruiting, and 4 several decoder settings. Various settings of dead-time, suppress-time, and reply-limit are imposed on each of the combined systems. An interrogation-channel analysis for a 60-station mathematical model is also presented. Additional discussion and analysis is given to anti-cross-moding effects, low-cost transponders, monopulse techniques, and echo-suppression circuitry. Author
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