Spectral-domain covariance estimation with a priori knowledge

  title={Spectral-domain covariance estimation with a priori knowledge},
  author={P. R. Gurram and N. A. Goodman},
  journal={IEEE Transactions on Aerospace and Electronic Systems},
A knowledge-aided spectral-domain approach to estimating the interference covariance matrix used in space-time adaptive processing (STAP) is proposed. Prior knowledge of the range-Doppler clutter scene is used to identify geographic regions with homogeneous scattering statistics. Then, minimum-variance spectral estimation is used to arrive at a spectral-domain clutter estimate. Finally, space-time steering vectors are used to transform the spectral-domain estimate into a data-domain estimate of… CONTINUE READING
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