Array Shape Calibration for Non-planar Array Using Disjoint Sources

Abstract

Most high resolution direction-of-arrival (DOA) estimation algorithms have good performance on the premise that the array manifold is accurately known. However, the performance degrades severely in presence of sensor positions uncertainties. In this contribution, we propose an algorithm to estimate sensor locations usingauxiliary sources. The auxiliary sources are disjoint sources, which appear independently of both space and time. First, we remove the contribution of noise from the data covariance matrix. Second, the sensor locations are estimated by solving the simultaneous equations. Third, we provide two methods, which are beneficial to engineering realization. The proposed algorithm is applicable to non-planar array. Computer simulations are presented to show the performance of the proposed algorithm.