Extension of nested array for large aperture and high degree of freedom
Yuki Iizuka, Koichi Ichige · IEICE Communications Express · 2017
This paper presents a novel array configuration for high-resolution direction of arrival (DOA) estimation by extending the two-level nested array based on the concept of the Khatri-Rao product. We found that the proposed array configuration had larger aperture and higher degree of freedom in comparison with those of the two-level nested array, and also had a closed-form sensor position representation. Performance of the proposed array is evaluated through some computer simulation of DOA estimation.