Semi-active radar homing, or SARH, is a common type of missile guidance system, perhaps the most common type for longer-range air-to-air and surface-to-air missile systems. The name refers to the fact that the missile itself is only a passive detector of a radar signal – provided by an external (“offboard”) source — as it reflects off the target. Semi-active missile systems use bistatic continuous-wave radar.
The NATO brevity code for a semi-active radar homing missile launch is Fox One.
Read more about Semi-active Radar Homing: Concept, Continuous-wave Radar, Electronic Counter-countermeasure (ECCM), Combat Record
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