Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1989-11-20
1997-07-29
Blum, Thoeodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
G01S 316, G01S 328
Patent
active
056525915
ABSTRACT:
A wideband, wide angle sidelobe cancellation array system is disclosed. The system includes a main array formed of a plurality of regularly spaced elements, and an auxiliary array formed of two auxiliary antenna elements spaced from the outermost elements of the main array a distance equal to one-half the spacing of the main array elements. The received signals from the main array elements are combined to form a main array signal. The contributions from the auxiliary array elements are combined to form an auxiliary array signal. The two array signals have a good amplitude and phase match over a wide frequency and angle range. The main array and auxiliary array signals are then combined to form a system array signal wherein the sidelobe energy in the main array signal has been substantially cancelled. The system can be made an adaptive one by the addition of adaptive RF phase and amplitude weighting to the auxiliary array signal prior to combining with the main array signal.
REFERENCES:
patent: 3500414 (1970-03-01), Woerrlein
patent: 3803624 (1974-04-01), Kinsey
patent: 4222051 (1980-09-01), Kretschmer, Jr.
patent: 4313116 (1982-01-01), Powell et al.
patent: 4390881 (1983-06-01), Lewis et al.
patent: 4408205 (1983-10-01), Hockham
patent: 4638320 (1987-01-01), Eggert et al.
patent: 4697188 (1987-09-01), Lin
"Direct Search: Solution of Numerical and Statistical Problems," Robert Hooke and T.A. Jeeves, JACM, 8, Apr., 1961.
"Adaptive Array Bandwidth with Tapped Delay-Line Processing," W.E. Rodgers, R.T. Compton, Jr., IEEE Transaction on Aerospace and Electronics Systems, vol. AES-15, No. 1 Jan. 1979.
"A New Class of Adaptive Array Processors," J.H. Chang, F.B. Tuteur, Journal of the Acoustical Society of America, pp. 639-649, Aug. 10, 1970.
Ajioka James S.
Gibson Donald J.
Liu Sien-chang Charles
Tang Raymond
Wong Nam S.
Blum Thoeodore M.
Denson-Low Wanda
Grunebach Georgann S.
Sales Michael W.
LandOfFree
Wideband and wide angle sidelobe cancellation technique does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wideband and wide angle sidelobe cancellation technique, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wideband and wide angle sidelobe cancellation technique will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-636555