Extension of two-level nested array with larger aperture and more degrees of freedom

摘要

This paper presents a novel array configuration which improves the accuracy for high-resolution direction of arrival (DOA) estimation using the concept of Khatri-Rao (KR) product. We extended the concept of two-level nested array and found a novel array configuration which has larger array aperture and more degree of freedom compared with that of the two-level nested array. The performance of the proposed array is evaluated through computer simulation.