Gain and phase autocalibration for uniform rectangular arrays

—To maintain the performance of direction-of-arrival (DOA) estimation, an accurate model of the array response is required. In a time-varying sensor environment, this is only possible with autocalibration. For a uniform linear array, there exist algorithms for autocalibration which exploit the Toeplitz structure of the unperturbed spatial covariance matrix. In this paper, we develop an autocalibration method for 2-D DOA estimation with a uniform rectangular array, in which we exploit a Toeplitz-block Toeplitz structure. We present a simple algorithm for gain and phase estimation, discuss ambiguity problems and evaluate the performance using simulations.

• Type: Journal
• Year: 2011
• Where: ICASSP
• Authors: Philipp Heidenreich, Abdelhak M. Zoubir
• Keywords: 2-d Doa Estimation, Estimation, ICASSP 2011, Signal Processing, Toeplitz Structure