I understand how you’d detect lasing but not radar lock, especially at the distances and intensities involved (like I’m familiar with how an NMR machine works but I cannot correlate it with RWR).
MAWS also make sense – you’re scanning with radar or laser or IR and use doppler effects to notice something is moving towards you.
In: Engineering
RWR is basically a radar receiver. The lock is (or can be) a tighter lock beam than normal radar. Also pulses coming from an active missle are a different strength, possibly a different frequency, and after firing from an aircraft or SAM will be blue-shifted toward the receiver.
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