Patent ID: 8629977

Claim:
A system for determining the position and speed of objects, the system comprising: a beam source operable to generate a beam; a transmit reflection device operable to reflect the beam at the objects, the transmit reflection device including a plurality of transmit faces, at least a portion of the transmit faces oriented at a different angle and operable to reflect the beam at a different height, such that the beam reflection off each transmit face creates a sweep and a portion of each sweep reflected from the first transmit face to the last transmit face overlaps the sweeps adjacent thereto; a beam receiver operable to detect the beam; a receive reflection device including a plurality of receive faces, at least a portion of the receive faces oriented at a different angle and operable to focus the beam reflected from objects at different heights onto the beam receiver; and a controller operable to determine the position of the objects over time and calculate the speed of the objects based on a change in the position of the objects.