Enhanced DOA Estimation Exploiting Multi-Frequency Sparse Array

• Published in: IEEE transactions on signal processing Vol. 69; pp. 5935 - 5946
• Main Authors: Zhang, Shuimei, Ahmed, Ammar, Zhang, Yimin D., Sun, Shunqiao
• Format: Journal Article
• Language: English
• Published: New York IEEE 2021; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Array interpolation; Array signal processing; Arrays; Correlation; Correlation analysis; Direction of arrival; Direction-of-arrival estimation; Estimation; group sparsity; Interpolation; multi-frequency sparse array; Redundancy; Sensor arrays; Sparse matrices; zero lag redundancy

In this paper, we develop a general framework of multi-frequency sparse array to estimate the direction-of-arrival (DOA) of a significantly higher number of targets than the number of physical sensors. The multi-frequency sparse arrays are designed to offer zero lag redundancy in the rendered differ...