Model based spectrum estimation for planar array signal processing

The authors present two-dimensional (2-D) random field modeling for the estimation of the power spectral density function of planar array data. They review noncausal autoregressive and Gaussian Markov random field modeling of stationary 2-D random processes. A method for obtaining robust parameter estimates in the nonGaussian situation is also presented. The application of 2-D method model-based spectrum estimation to the determination of directions of arrival of plane waves impinging on a planar array is discussed, and examples of spectrum estimates are included to illustrate the utility of 2-D model-based spectrum estimation.<
>