Accession Number : AD0716625

Title :   A Methodology for Evaluating the Capacity of Air Traffic Control Systems.

Descriptive Note : Annual rept. no. 1, Sep 69-Aug 70,

Corporate Author : STANFORD RESEARCH INST MENLO PARK CALIF

Personal Author(s) : Ratner,R. S. ; Siddiquee,Waheed ; Glaser,Myron B. ; Burford,Robert ; Holden,Paul

Report Date : OCT 1970

Pagination or Media Count : 184

Abstract : The report describes results obtained in a project to develop a methodology for evaluating the capacity of air traffic control systems. The meaning of capacity in an ATC system and the relationship of capacities of functional and geographical system elements to system capacity measures is qualitatively analyzed. Capacity is defined in terms of aircraft movement numbers and rates as limited by a number of factors, including safety and performance. The need for a family of computer-based capacity-evaluation models is identified, to balance the fidelity required in modeling the ATC process for capacity assessment, against the heavy computational requirements of such modeling. A decomposition concept is applied to achieve this balance. The conceptual design of members of the family, and some preliminary algorithm development, are reported. Members of the family of models are designed to measure each of the capacity limitations associated with system operating strategies, scheduling, and routing, with delays resulting from congestion, with flow-control techniques, with separation minima, control procedures, and other safety aspects as they affect aircraft flight paths, and to measure the delays and aircraft movement limitations associated with high-workload models. The results are reported of a fast-time flight-path simulation of a future Chicago terminal area, demonstrating the use of one member of the family of models. Also reported are the experimental results of a congestion propagation simulation. (Author)

Descriptors :   (*AIR TRAFFIC CONTROL SYSTEMS, PERFORMANCE(ENGINEERING)), OPERATION, AVIATION SAFETY, MATHEMATICAL MODELS, SIMULATION

Subject Categories : Air Navigation and Guidance

Distribution Statement : APPROVED FOR PUBLIC RELEASE