Accession Number : ADD008683

Title :   Direction Finding and Frequency Identification Method and Apparatus.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Klose,Dirk R ; Skudera,William J , Jr

Report Date : 15 Jun 1981

Pagination or Media Count : 20

Abstract : A surface acoustic wave interferometer direction finding and frequency identification method and apparatus is disclosed. The invention utilizes a plurality of dispersive delay lines in order to represent a multiplicity of signals, having different frequencies and angles of arrival at a plurality of antennae, by a train of pulses which retain phase information. Analysis of the interpulse spacing among the pulses in this pulse train, which represents the difference in frequency among the multiplicity of signals arriving at the antennae of the invention, and a pulse comparison of the signals at each of the antennas, allows selective correlation of signal with angle of arrival. (Author)

Descriptors :   *Patent applications, *Direction finding, *Acoustic delay lines, Surface waves, Interferometers, Dispersion relations, Angle of arrival, Pulse trains, Phase studies

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE