From the descriptions I could find it seemed more like it was a small missile
that released a cloud of fragments to intercept the RPG... Pretty impressive.
I have often thought about how to detect hidden explosives from a distance using lasers, It may not be possible- probably isn't since we would already be doing it if it was... But I have wondered if some sort of remote long range spectrocopy could detect the molecules outgassing from an explosive. After all, such molecules are outgassing in a quantity that dogs can detect them...
It would be wonderful if IED's could be detected before you are right up beside them...