Active jamming individual protection station SAP-518 was designed by Kaluga Research Radio-Technical Institute. It protects the aircraft from strikes by modern and prospective surface-to-air and air-to-air missiles. The station is specifically effective against missiles with active radar self-targeting systems. It also jams aircraft radars and ground and seaborne air defense.
The latest electronic achievements are used in SAP-518, including powerful broadband active antenna arrays. The station is mounted in two suspended containers on the wingtips. One container carries the receiver to determine emission frequency. The second one holds digital radio frequency memory with a jamming transmitter.
SAP-518 selects the most dangerous targets and produces effective programs to suppress them. The device uses the so-called digital frequency memory technology. Multichannel memory devices can receive and store hundreds of radio signals. The system can thus generate dummy targets which are difficult to distinguish from the real ones. The signals are actually radio portraits of various targets. The system actually misinforms the adversary and it has to spend a major resource to track dummy targets which decreases the aiming efficiency