Accession Number : ADD016025

Title :   Heterodyne Array for Measurement of Target Velocity.

Descriptive Note : Patent, Filed 30 Jun 92, patented 3 Aug 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Mermelstein, Marc D

Report Date : 03 Aug 1993

Pagination or Media Count : 15

Abstract : A system for determining the angular velocity of a mobile target relative to a station. The system develops first and second reference beams and a beam to the target to enable the target to generate first and second signals. Optical devices preferably fiber-optical devices, responsive to the first and second reference beams and to the first and second signals respectively received from the target at discrete first and second positions on the station, respectively produce first and second interference pattern signals. Each of said received signals has a Doppler shift as a function of the movement of the target. An electrical processing circuit then processes the interference pattern signals to develop a signal indicative of the target's angular velocity.

Descriptors :   *OPTICAL EQUIPMENT, *PATENTS, *VELOCIMETERS, HETERODYNING, ARRAYS, TARGETS, MOBILE, PATTERN RECOGNITION, SIGNAL PROCESSING

Subject Categories : Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE