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Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
September 13, 2016
Patent Application Number
15010110
Date Filed
January 29, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for beamforming digitized signals from a sensor array to enhance signals originating from a preselected angle of interest and a preselected range bin while suppressing interference signals from other angles of arrival. Snapshots of sensor data are acquired and used to estimate an autocorrelation function. An autoregressive model of power is determined over angles of arrival as polynomial coefficients and roots are calculated as associated with the interference signals. Roots are selected for suppression by providing nulls. Exponentials are constructed from the roots. The exponentials are used with variances from the autoregressive model to provide a synthetic covariance matrix having weights that suppress the interference signals.
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