Abstract
In this paper we advocate the definition of a ground support tool which should assist the approach controller on issuing and monitoring spacing instructions in an ATC environment where ASAS-IM-S&M procedures are permitted. We describe the algorithmic basis for two potential sub-functions of such ground support tool, which compute feasible maneuvers to achieve the desired spacing and monitor their safe execution. The first sub-function described provides a set of proposed feasible maneuvers that allow achieving a desired separation. Algorithms use simplified geometrical calculations to compute routes and speeds required to perform the maneuvers. Feasibility, from a safety and aircraft performance point of view, is checked. The second sub-function of the ground support tool consists on a set of processes that monitor the safe execution of merging operations. Parameters such as distances, times and velocities of the involved aircraft are monitored. Then, several automated tests based on the comparison of those measures with some predefined operational thresholds are defined, guaranteeing aircraft separation and maneuver feasibility. A simulator has been developed to test the designed sub-functions of the proposed ground support tool. The aim of this simulator is to recreate the complete process of proposing a set of feasible maneuvers to the controller, allowing him selecting one of them and issuing the corresponding instruction, performing its execution and finally monitoring it to ensure everything goes as desired. The simulation takes into account inaccuracies such as inexact weather (wind) forecast and errors in ADS-B measures. The results of several simulation scenarios are presented in the paper, and conclusions are extracted from these results.
Published Version
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