Sample Matrix Inversion MVDR

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The Sample Matrix Inversion beamformer approximates Capon's MVDR beamformer by estimating the spatial covariance matrix from observed snapshots. This is often done in practice since we do not know the true spatial covariance matrix in real world situations.
  1. John Buck
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Should the factor of 1/N be 1/(N-1) for the sample covariance?

mattmiller