Communications: directive radio wave systems and devices (e.g. – Directive – Utilizing correlation techniques
Patent
1985-08-12
1988-01-19
Blum, Theodore M.
Communications: directive radio wave systems and devices (e.g.,
Directive
Utilizing correlation techniques
G01S 316, G01S 328
Patent
active
047207124
ABSTRACT:
A beam forming apparatus is provided having a plurality of beam ports producing a corresponding plurality of differently directed beams, each one of such beams being associated with a corresponding one of the beam ports, one of such beams being directed at a desired signal source and at least one of the beams being directed at an interfering signal source. A processor is coupled to the beam ports, for combining signals at such beam ports into a composite signal with the ratio of the power of the desired signal component of such composite signal to the power of the interfering signal component of such composite signal being increased from the ratio of the power in such desired and interfering signal components at the one of the beam ports associated with the beam directed at the desired signal source. The beam forming apparatus directs one of the beams at a desired signal source and an additional beam at each one of a number of interfering signal sources. The signals within the additional beams are weighted and then subtracted from the signals in the desired signal directed beam to substantially cancel the interfering signals from the desired signal. The number of weights required for computation is equal to the desired signal port plus the number of additional beam ports; i.e., one plus the number of interfering signal sources.
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Brookner Eli
Howell James M.
Blum Theodore M.
Raytheon Company
Sharkansky Richard M.
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