Originally Posted by
rssteve
yes it can, it needs to send out 2 signals., between a set time, it then measures the speed by the distance change in the set time. one bounce would only give a measurement of distance and not speed.
I said it's not directional, which it isn't. By saying 'signal' I implied that it 'fires' out the radar continuously (not twice), and interprets the returned signal/s.
You seem to be confusing 2 signals with the fact that it requires 2 photos to be taken. The photos are needed as the radar alone is too unreliable to be admissable in court. Unfortunately everyone seems to have forgotten this, and just goes off the radar data, not the photographic proof.