Title :
Model based spectrum estimation for planar array signal processing
Author :
Hansen, Richard R., Jr. ; Chellappa, Rama
Author_Institution :
Dept. of Electr. Eng.-Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
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
Keywords :
Markov processes; parameter estimation; random processes; signal processing; spectral analysis; 2D random field modelling; Gaussian Markov random field modeling; directions of arrival; model-based spectrum estimation; nonGaussian situation; noncausal autoregressive modelling; planar array signal processing; plane waves; power spectral density function estimation; robust parameter estimates; stationary 2-D random processes; Array signal processing; Density functional theory; Direction of arrival estimation; Markov random fields; Parameter estimation; Planar arrays; Random processes; Robustness; Spectral analysis; Two dimensional displays;
Conference_Titel :
Spectrum Estimation and Modeling, 1988., Fourth Annual ASSP Workshop on
Conference_Location :
Minneapolis, MN
DOI :
10.1109/SPECT.1988.206218
