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Adaptive beamformers (ABF) are used when estimating the direction of arrival of a narrowband planewave with a uniform line array in an environment with loud, unwanted signals. Capon's minimum variance distortionless response (MVDR) suppresses interferers by steering beampattern nulls in their directions but maintains unity gain in the look direction. In practical situations, ABFs replace the ensemble...
A new class of time-frequency distribution kernels is introduced. Kernels in this class map the sinusoidal components in the data to auto-terms of undamped sinusoids and cross-terms of damped sinusoids in the local autocorrelation function (LAF). This property allows deterministic exponential modeling of the LAF for improved spectral resolution. Using the backward linear prediction approach, the roots...
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