LIVE system concept: Locating and identifying vehicle equipment

The LIVE-system is a concept that enables detection of aircraft and ground vehicles on the manoeuvering area of airports based on unmodified secondary surveillance radar (SSR) transponders. The aim of the system is to support routines that prevent runaway incursions and to achieve better airport capacity during adverse visibility conditions. SSR was never workable for airport surface traffic due to garbling and reflection problems. The concept of the LIVE-system solves these problems, by creating a large number of small areas of SSR coverage, each of which interrogates its area during a small period of time, enabling the total of the surface of the airport during one second. The LIVE-system has a central system that determines the precise position of targets with trilateration. A feature is added to the system to prevent aircraft on the ground from responding to interrogations of other SSR interrogators in the vicinity of the airport.