Completeness and consistency analysis of state-based requirements
Proceedings of the 17th international conference on Software engineering
Elements of Mathematical Analysis in PVS
TPHOLs '96 Proceedings of the 9th International Conference on Theorem Proving in Higher Order Logics
PVS: A Prototype Verification System
CADE-11 Proceedings of the 11th International Conference on Automated Deduction: Automated Deduction
Air Traffic and Operational Data on Selected U.S. Airports With Parallel Runways
Air Traffic and Operational Data on Selected U.S. Airports With Parallel Runways
The Flight Deck Perspective of the NASA Langley AILS Concept
The Flight Deck Perspective of the NASA Langley AILS Concept
Formal Verification of Conflict Detection Algorithms
CHARME '01 Proceedings of the 11th IFIP WG 10.5 Advanced Research Working Conference on Correct Hardware Design and Verification Methods
TPHOLs '08 Proceedings of the 21st International Conference on Theorem Proving in Higher Order Logics
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The Airborne Information for Lateral Spacing (AILS) program at NASA Langley Research Center aims at giving pilots the information necessary to make independent approaches to parallel runways with spacing down to 2500 feet in Instrument Meteorological Conditions. The AILS concept consists of accurate traffic information visible on the navigation display and an alerting algorithm which warns the crew when one of the aircraft involved in a parallel landing is diverting from its intended flight path. In this paper we present a model of aircraft approaches to parallel runways. Based on this model, we analyze the alerting algorithm with the objective of verifying its correctness. The formalization is conducted in the general verification system PVS.