System and a method for the instantaneous determination of the f

Details System and a method for the instantaneous determination of the f System and a method for the instantaneous determination of the f

1995-05-22

1996-10-22

Wieder, Kenneth A.

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

Directive

Beacon or receiver

342445, 342196, 367125, 324 7677, G01S 502

Patent

active

055681549

ABSTRACT:
A system for the instantaneous determination of the frequencies and angles of arrival of a plurality of simultaneously incoming signals. The system includes beam network matrix for receiving the simultaneously incoming signals, the matrix providing one or more superimposed output signal which includes phase information associated with the angles of arrival of the signals. The system uses a Fourier receiver which includes a sampler means for periodically producing a sample of the superimposed output signals and a frequency differentiator for differentiating the sample by frequency into a train of discrete waveforms. Each of the train of discrete waveforms is associated with one of the incoming signals and includes phase information associated with one of the incoming signals. The Fourier receiver further includes a mechanism for determining frequency which determines from one of the train of discrete waveforms the frequency of one of the incoming signals. The system further includes a mechanism for determining phase which determines from the phase information of one of the train of discrete waveforms the angle of arrival of the incoming signal.

REFERENCES:
patent: 4333170 (1982-06-01), Mathews
patent: 4454597 (1984-06-01), Sullivan
patent: 4480322 (1984-10-01), Orieux
patent: 4601025 (1986-07-01), Lea
patent: 4626859 (1986-12-01), Stansfield
patent: 4639733 (1987-01-01), King
patent: 5058419 (1991-10-01), Nordstrom
"Comprehensive Receiver Technology", W. D. Daniels et al Microwave Journal, pr. 1986.

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