Modelování procesů na stanovištích letištní služby řízení letového provozu na regionálních letištích

Abstract

This dissertation addresses the modelling of processes associated with the provision of aerodrome air traffic control services at regional airports, with a focus on the operational workload of airport control towers. A specific characteristic of regional airports is the pronounced seasonality of traffic demand, which is particularly difficult to predict at non-coordinated airports. At regional airports, aerodrome air traffic control services are often provided under the Single Person Operation (SPO) regime. This operational mode places increased demands on capacity planning and on the timely identification of threshold states leading to air traffic controller overload. The dissertation considers the processes taking place at the aerodrome control tower as a queueing system with priority requests. Based on an analysis of activities performed by air traffic controllers, models with two and five priority classes of service requests are defined. The service times of individual classes are modelled using a shifted (three-parameter) Weibull distribution, the suitability of which is verified through statistical analysis of data measured at the aerodrome control tower of Ostrava/Mošnov Airport. To evaluate capacity characteristics, analytical and simulation models based on queueing theory and Coloured Petri Nets are developed and implemented using CPN Tools. The results of the dissertation enable the direct calculation of limiting airport traffic intensities at which the mean waiting time for the issuance of ATC departure clearances increases to a predefined limit value, and allow identification of the appropriate moment for activating a dedicated ATC Clearance Delivery position. The main contribution of the dissertation lies in the proposal of a methodological approach that can be used to support decision-making in capacity planning of aerodrome control towers at regional airports and to enhance operational efficiency while maintaining the required level of safety.