The police radar guns work off the doppler affect (for radar guns) or
the change in distance between pulses for lidar. My question is how
they account for angle, can a police officer who is at a 87 degree
angle correctly measure your speed? It should only work going straight
at or away from. Also, do the police always have their gun on?
Because it detects driving police cars who arn't shooting radar to my
visibility, does that just mean that the vehicle has an installed
radar gun constantly giving speeds?. And how would that account for
angle? If you know of a good website I can read please tell me.