Hybrid Model Visualization in Requirements and Design: A Preliminary Investigation

Authors:
Jeff Magee;Jeff Kramer;Bashar Nuseibeh;David Bush;Julia Sonander
Affiliations:
Department of Computing, Imperial College, London SW7 2BZ, UK.;Department of Computing, Imperial College, London SW7 2BZ, UK.;Department of Computing, Imperial College, London SW7 2BZ, UK.;National Air Traffic Services Ltd, 1 Kemble Street, London WC2B 4AP, UK;National Air Traffic Services Ltd, 1 Kemble Street, London WC2B 4AP, UK
Venue:
IWSSD '00 Proceedings of the 10th International Workshop on Software Specification and Design
Year:
2000

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Abstract

This paper reports on a preliminary investigation into applying work on graphic animation of behavioral models to an air traffic control case studythe National Air Traffic Services (NATS) Short Term Conflict Alert (STCA) system that advises controllers of potential conflicts between aircraft in controlled airspace. Graphic animation permits a model to be visualized in the context of a problem domain. The paper describes how, in order to construct a satisfactory visualization, the finite state behavioral model of the STCA system is extended with Boolean functions over continuous variables to form a hybrid model. The rationale for constructing this hybrid model and its potential use in requirements and design are discussed.