TCAS Multiple Threat Encounter Analysis
Thomas B. Billingsley, I P Espindle, John Griffith · 2009
The recent development of high-fidelity U.S. airspace encounter models at Lincoln Laboratory has motivated a simulation study of the Traffic Alert and Collision Avoidance System (TCAS) multiple threat logic. We observed from archived radar data that while rarer than single-threat encounters, multiple threat encounters occur more frequently than originally expected. The multi-threat logic has not been analyzed in the past using encounter models. To generate multi-threat encounters, this report extends the statistical techniques used to develop pairwise correlated encounters. We generated and simulated a large number of multi-threat encounters using the TCAS logic imprlementad in Lincoln Laboratory's Collision Avoidance System Safety Assessment Tool.