DOPPLER VELOCITY INTERFEROMETER
Jan 1, 1998 — The DVI 99 noncontact velocity recording system from Martin, Froeschner & Associates detects spontaneous changes in the frequency of light reflected from a moving surface. This turnkey system, which is housed in a 3-in. rack-mounted chassis, is connected to viewing optics via optical fibers and to a PC-based data acquisition and analysis system. The fast amplified photodiodes located in the data acquisition system can record changes in velocity with subnanosecond resolution. Unlike vibrometers,...
Martin, Froeschner & Associates