For military aircraft, a main component of the electronic warfare system is the Radar Warning Receiver (RWR). The primary function of the RWR is to detect threat radars. This provides situational awareness to the aircrew, improving survivability.
BAE Systems provides the AN/ALR-56C for the F-15 and AN/ALR-56M for the F-16 and C-130J.
Download the radar warning receiver datasheets to learn more.