The heart of the decoy is the radar array, which which simulates the appearance of the ship, . reflecting radar signals back towards their source. High accuracy in construction enhances the physical decoy's "size" apparent to the incoming missile. The radar array is suspended inside an inflatable framework constructed of fabric and incorporating features to facilitate speed and consistency of operation. A gassing system is used to pressurise the framework and to serve as a drogue to anchor the floating decoy. The gassing system utilises gas cylinder technology to ensure minimum stored volume and mass while providing rapid and maximum inflation.The original AN/SLQ-49 decoy system has been in operational service since 1985 with the Royal Navy, the U.S. navy and other NATO countries. Configured originally for confusion and distraction roles, it has demonstrated an effective seduction capability.