Large-aperture sparse array detector system for multiple emitter

Details Large-aperture sparse array detector system for multiple emitter Large-aperture sparse array detector system for multiple emitter

1988-11-25

1992-09-01

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Utilizing correlation techniques

342373, G01S 316, G01S 328

Patent

active

051443228

ABSTRACT:
A detector beamformer array system having a sparse array and a reference ay. 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.

REFERENCES:
patent: 4313116 (1982-01-01), Powell et al.
patent: 4495502 (1985-01-01), Masak
patent: 4516126 (1985-05-01), Masak
patent: 4555706 (1985-11-01), Haupt
patent: 4692768 (1987-09-01), Becavin

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