Performance analysis of 1090 MHz automatic dependent surveillance roadcast (ADS-B) using OPNET modeler [ATC]

Automatic dependent surveillance broadcast (ADS-B) is an application which allows aircraft to broadcast identification, state, and intent information to neighboring aircraft and nearby ground stations, in order to provide better situational awareness of the local airspace to all parties concerned. The successful performance of ADS-B could have a significant impact on the introduction of free flight concepts in the national airspace system (NAS). We are modeling 1090 MHz mode S ADS-B, taking into account the interference from replies at the same frequency to secondary surveillance radar (SSR) interrogations from ATCRBS (air traffic control radar beacon system) and mode S ground stations, to better understand the capability of ADS-B to meet performance parameters necessary for implementation of DAG-TM (distributed air-ground traffic management) concepts.