Radar warning receiver

Radar warning receiver systems detect the radio emissions of radar systems. Their primary purpose is to issue a warning when a radar signal that might be a threat is detected. The warning can then be used, manually or automatically, to evade the detected threat. RWR systems can be installed in all kind of airborne, sea-based, and ground-based assets . This article is focused mainly on airborne military RWR systems, for commercial police RWR systems, see radar detector.

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