Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1998-07-07
2000-09-26
Tarcza, Thomas H.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
342 16, 342 17, 342368, 343824, G01S 316, G01S 328, H01Q 326, H01Q 2108, H04K 300
Patent
active
061248282
ABSTRACT:
This array antenna with anti-jamming in reception for radioelectrical or ultrasound waves is provided with radiating elements fitted out individually or in groups with amplitude-controlled and phase-controlled passive or active modules enabling aiming at transmission as well as at reception by analog beam-forming. It possesses a reception anti-jamming circuit carrying out successively two reduced, adaptive computational beam-forming operations, one in elevation which is performed on a grouping, in horizontal alignments, of the reception signals of the radiating elements and working on the reception signals by modifying the settings of the controlled modules and the other in relative bearing, performed on a grouping, in vertical alignments, of the signals of the radiating elements that which it phase-shifts and adds up to form a reception channel for the total antenna. The reception anti-jamming thus obtained has performance characteristics comparable to those that would result from a full adaptive beam-forming operation. At the same time, it requires a far smaller volume of processing.
REFERENCES:
patent: 4291310 (1981-09-01), Kruger
patent: 4596986 (1986-06-01), Andrews et al.
patent: 5068632 (1991-11-01), Champeau
patent: 5084708 (1992-01-01), Champeau et al.
patent: 5343211 (1994-08-01), Kott
patent: 5675343 (1997-10-01), Champeau
A. Farina, et al., "Wide Deterministic Nulling By Means Of Multiplicative Array Techniques," Conference Proceedings Of The 11.sup.th European Microwave Conference, (Sep. 7-11, 1981), pp. 805-812.
"Thomson-CSF"
Mull Fred H.
Tarcza Thomas H.
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