A method for digital determination of a single frequency from a sine wave sampled at less than the Nyquist rate is discussed. The method makes use of phase shift information to eliminate the aliasing ambiguity. Multiple sampled data are required to eliminate ambiguity completely. Computer modeling using simulated data corrupted by uncorrelated Gaussian noise was used to verify the approach. The results demonstrate that the frequency of an input sine wave can be correctly identified. This approach can be applied to electronic warfare (EW) receivers to increase their input bandwidth.<>
Reduction of aliasing ambiguities through phase relations
IEEE Transactions on Aerospace and Electronic Systems ; 28 , 4 ; 950-956
1992-10-01
511535 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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