A computer-based laser Doppler velocimeter

A Laser-Doppler-Velocimeter is described which is specially designed for windtunnel applications. Facing other Velocimeters the data analysis is here performed digitally by use of a computer. The control of the testing procedure is also done by the computer, while a remote control is installed between computer and positioning control for the optical part of the Velocimeter, built up on two three-axis-travers mechanisms. This remote control generates or improves all signals necessary for control procedures. In addition to the description of the system's functions, necessary and desirable improvements are briefly discussed.