Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1988-12-22
1990-06-26
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
342154, G01S 316, G01S 328
Patent
active
049375849
ABSTRACT:
A method of nulling out interference sources in a large-aperture phased ay radar system is described. The system has apriori knowledge of the interference sources and depends upon access to the array element phase shifters for injection of phase only or phase and amplitude perturbations, of a mainbeam aperture distribution, into said array element phase shifters. The phase or phase and amplitude perturbations are derived from an aperture ripple modulation algorithm. The system does not require any auxiliary elements or correlators or beamformers.
A method of nulling out interference sources in a monopulse large-aperture phased array radar system is also described wherein the phase only or phase and amplitude perturbations are injected into both the sum and difference beams.
REFERENCES:
patent: 4555706 (1985-11-01), Haupt
patent: 4575724 (1986-03-01), Wiener
patent: 4720712 (1988-01-01), Brookner et al.
Cheston Theodore C.
Gabriel William F.
Blum Theodore M.
McDonnell Thomas E.
Rutkowski Peter T.
United States of America as represented by the Secretary of the
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