The Patriot missile homes on an electronic signal "painted" on the target by the radar, and relays its position in relation to the target back to the radar and on to the control centre.
Barkley's radar was again off target when he attempted to convert and things rapidly went from bad to worse for the visitors.
He cites the 1991 visit of an American inspection team to the Pechora radar in the Arctic Circle, when inspectors learned that the radar was passing along target-tracking information to a central command.
Conventional defence systems use one rotating radar unit to find a target and a second to subsequently track it for risk assessment.
Its defining characteristic is the low-observable, or stealth, features that make it nearly impossible to track or target using conventional radar or heat-seeking missiles.
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Described as "an electronic question and answer system", it sends a radar signal to any unidentified target to which a friendly will respond automatically with a coded reply.
The company is one potential target that has been on the radar of larger defense companies, a second industry source said.
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By incorporating a commercial radar (the Cerberus Scout surveillance system), target detection reached 100 percent.
This S-Band radar provided real-time discrimination and classification of the target, information that considerably enhances the probability of intercept.
Larne goalkeeper Ryan Brown is another possible target on the the Warden Street club's radar.
Like its cousins radar and sonar, lidar (light detection and ranging), works by broadcasting electromagnetic waves towards a target and then building up a picture from the reflection.
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