Two-dimensional velocity distribution measuring system using multiple laser beam line detectors and high order correlation analysis.

A new 2-D velocimeter which uses multiple line detectors and high order correlation analysis is proposed. In this system the information about the directions and magnitudes of the distributed velocities are extracted by higher order correlation analysis of the signals detected by stationary line detectors; therefore no mechanical or optical scanning of detecting points is required. The principle, the practical system which consists of laser beam line detectors, and some experimental results are shown. The results clearly show the effectiveness of the proposed method.