Sounds like some quite advanced detection algorythms and a lot of computing power packed into a comparatively small missile.
What impresses me most is the ability to identify a target by itself. I got a chance to get a demonstration of the new battlefield RADAR for the Bundeswehr
Targets are only detected by their dopler-shift, imaging is not possible, target classification done is manualy by translating the dopler-shift into sound and the operator must decide wether the sound is characteristic for a wheeled vehicle, tracked vehicle, helicopter, etc.
Ok ist works but it takes a skilled operator.