DISTANCE DETERMINATION SYSTEM FOR A VEHICLE USING HOLOGRAPHIC TECHNIQUES

摘要

A distance determining system (5) for a vehicle (10), the distance determining system (5) comprising: means (32, 34) for generating and displaying a pattern (36, 42; 210) encoded by a holographic coded medium (208; 208.1 208.2) being operatively connected to an actuator (205; 205.1; 205.2) and in communication with an electromagnetic radiation source (206) configured to generate coherent electromagnetic waves (211); an imager (46, 56) configured to obtain image data representing a field of view (47, 57) of the vehicle (10); and a distance determination module (16) in communication with the imager (46, 56) configured to locate at least one feature (41, 45) of the pattern (36, 42; 210) in the image data and an estimated distance between the image data Vehicle (10) and the at least one feature (41, 45) based at least in part on a known position of the device (32, 34), a known position of the imager (46, 56) and an arrangement of the pattern (36, 42; ), wherein the holographic coded medium (208; 208.1; 208.2) comprises a holographic pattern (209; 209.1; 209.2) and the pattern (36, 42; 210) based on the direction of the coherent electromagnetic waves (211) the holographic pattern (209; 209.1; 209.2) while the holographic coded medium (208; 208.1; 208.2) is driven for movement by the actuator (205; 205.1; 205.2).