Estimation of DOA and phase error using a partly calibrated sensor array with arbitrary geometry

摘要

A new method is presented to effectively estimate the direction-of-arrival (DOA) of a source signal and the phase errors of a sensor array with arbitrary geometry. Assuming that one sensor (except the reference one) has been calibrated, the proposed method appropriately reconstruct the data matrix and establish a series of linear equations with respect to the unknown parameters through eigenvalue decomposition (EVD). We build a LS problem with a quadratic constraint and solve it by two approaches. Unlike the conventional methods which are limited to specific array geometries, the proposed can be applied to arbitrary arrays. Moreover, it only requires one calibrated sensor, which may not be consecutively spaced to the reference one. The effectiveness of the proposed method is validated by simulation results.