Metrics of Communication Performance

摘要

Metrics of voice communications between pilots and air traffic control pro vide important indices of NAS system performance. They help to charac terize current operations, define requirements for future systems, and es tablish baselines against which performance of new systems can be com pared. This article presents a review of studies of communication metrics in actual operations. It summarizes what is objectively known about vari ous aspects of communication performance, including: the number of con troller transmissions per minute, the characteristics of pilot responses, communication error rates, and the time required to transmit a message. Gaps in performance data are identified, empirical links between commu nication performance and other measures of system safety are explored, and the implications for system specification and evaluation are discussed.