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Lock-on is a feature of many radar systems that allows it to automatically follow a selected target. Lock-on was first designed for the AI Mk. IX radar in the UK, but first used extensively by US ground-based SCR-584 radar. The SCR-584 demonstrated the ability to easily track almost any airborne target, from aircraft to artillery shells.

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How is a missile lock detected?

The subject of a radar lock-on may become aware of the fact that it is being actively targeted by virtue of the electro-magnetic emissions of the tracking system, notably the illuminator. This …
Matthew Lock's user avatar