Accession Number : ADD014303

Title :   Large-Aperture Sparse Array Detector System for Multiple Emitter Location.

Descriptive Note : Patent Application, Filed 25 Sep 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Gabriel, W F

Report Date : 25 Nov 1989

Pagination or Media Count : 13

Abstract : A detector beamformer array system having a sparse array and a reference array. The reference array is adapted, according to known principles, to have an output response with one main lobe significantly larger than all other side lobes, and with a substantially flat response. Signals received by both arrays are cross-correlated with one another, and only signals sufficiently correlated are annunciated. The resulting adaptive array system has a resolution even better than that of the sparse array's aperture, and with directional sector selectivity corresponding to the angular width of the reference array's mainlobe, providing a system having high resolution and directional selectivity, but with far fewer sensors than with filled arrays used for this purpose. Patent applications. (RH)

Descriptors :   *ANTENNA ARRAYS, *BEAM FORMING, *ANTENNA APERTURES, *PATENT APPLICATIONS, *DIRECTION FINDING, ADAPTIVE SYSTEMS, ANGLES, ANTENNA LOBES, DETECTORS, DIRECTIONAL, EMITTERS, HIGH RESOLUTION, POSITION(LOCATION), SIDELOBES, SIGNALS, WIDTH

Subject Categories : Target Direction, Range and Position Finding

Distribution Statement : APPROVED FOR PUBLIC RELEASE