A Turn-Projected State-Based Conflict Resolution Algorithm

State-based conflict detection and resolution (CD&R) algorithms detect conflicts and resolve them on the basis on current state information without the use of additional intent information from aircraft flight plans. Therefore, the prediction of the trajectory of aircraft is based solely upon th...

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Bibliographic Details
Published inNASA Center for AeroSpace Information (CASI). Reports
Main Authors Butler, Ricky W, Lewis, Timothy A
Format Report
LanguageEnglish
Published Hampton NASA/Langley Research Center 01.10.2013
Subjects
Aircraft
Algorithms
Computer simulation
Conflict resolution
Flight plans
Forecasting
State vectors
Traffic conflicts
Trajectories
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Summary:State-based conflict detection and resolution (CD&R) algorithms detect conflicts and resolve them on the basis on current state information without the use of additional intent information from aircraft flight plans. Therefore, the prediction of the trajectory of aircraft is based solely upon the position and velocity vectors of the traffic aircraft. Most CD&R algorithms project the traffic state using only the current state vectors. However, the past state vectors can be used to make a better prediction of the future trajectory of the traffic aircraft. This paper explores the idea of using past state vectors to detect traffic turns and resolve conflicts caused by these turns using a non-linear projection of the traffic state. A new algorithm based on this idea is presented and validated using a fast-time simulator developed for this study.