Efficient estimation of a narrow-band polynomial phase signal impinging on a sensor array

Authors:
Alon Amar
Affiliations:
Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, Delft, The Netherlands
Venue:
IEEE Transactions on Signal Processing
Year:
2010

Citing 7
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Abstract

The parameters of interest of a polynomial phase signal observed by a sensor array include the direction of arrival and the polynomial coefficients. The direct maximum likelihood estimation of these parameters requires a nonlinear multidimensional search. In this paper, we present a two-step estimation approach. The estimation requires only a one-dimensional search in the direction of arrival space and involves a simple least squares solution for the polynomial coefficients. The efficiency of the estimates is corroborated by Monte Carlo simulations.