Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Reexamination Certificate
2007-07-10
2007-07-10
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Directive
Beacon or receiver
C342S147000, C342S362000
Reexamination Certificate
active
10970749
ABSTRACT:
Estimating an angle-of-arrival of a signal includes receiving a signal sent from an emitter. The signal is received at a singly polarized antenna system associated with an antenna response model. An autocorrelation matrix having noise-related eigenvectors is generated in response to the signal. Polarization ratios are determined from projections of a noise-related eigenvector onto the antenna response model. A minimum polarization ratio variance is established for the polarization ratios. A polarization vector corresponding to the minimum polarization ratio variance is identified. An angle-of-arrival of the signal is estimated in accordance with the identified polarization vector.
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Chen Shelley
Raytheon Company
Tarcza Thomas H.
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