Paper Info
Title
Direction of Arrival and Polarization Estimation for Nested Polarization Sensitive Array.
Abstract
This paper presents a new polarization sensitive array composed of a two-level nested subarray and an optimally nested subarray with orthogonal oriented antennas, and then proposes a correlation matrix reconstruction based estimation method for direction of arrival (DOA) and polarization state. The optimally nested array with $N$ antennas can provide maximum degrees of freedom (DOF) of difference co-array (i.e., $(N - 1)N + 1$ ), which increases the aperture of the proposed array. However, both the difference co-arrays of the optimally nested subarray and between subarrays are nonuniform linear arrays (i.e., holes appear), and hence most existing methods fall to use all information received from the proposed array, resulting in estimation performance loss. Depending on the oblique projection (OP) operator constructed by initial DOAs from the two-level nested subarray, the proposed method first fills the holes to generate the virtual correlation matrix with increased DOF. Then the DOA and polarization state are estimated efficiently. The resulting DOAs can be regarded as the new initial angles for OP operator construction, to iterate aforesaid steps for estimation performance enhancement. The Cramr-Rao bound (CRB) and the computational complexity of the proposed method are provided. Simulation results are given to validate the effectiveness of the proposed array and the proposed method.
Year
DOI
Venue
2019
10.1109/ACCESS.2019.2949910
IEEE ACCESS
Keywords
DocType
Volume
Antenna arrays,Direction-of-arrival estimation,Estimation,Covariance matrices,Arrays,Correlation,Polarization sensitive array,two-level nested array,optimally nested array,correlation matrix reconstruction,oblique projection operator
Journal
7
ISSN
Citations 
PageRank 
2169-3536
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Yunlong Yang100.68
Yuguan Hou222.40
Xing-Peng Mao32023.68
Guojun Jiang400.34