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International Journal of Antennas and Propagation
Volume 2016, Article ID 5063450, 9 pages
http://dx.doi.org/10.1155/2016/5063450
Research Article

Azimuth/Elevation Directional Finding with Automatic Pair Matching

Department of Electrical Engineering, Prince Mohamed Bin Fahd University, Al Khobar, Saudi Arabia

Received 11 April 2016; Revised 21 September 2016; Accepted 15 November 2016

Academic Editor: Aboulnasr Hassanien

Copyright © 2016 Nizar Tayem. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We addressed the problem of two-dimensional (2D) direction-of-arrival (DOA) elevation and azimuth angles estimation for multiple uncorrelated signals using L-shaped antenna array configuration. The key points of the proposed method are the following: () it obtains azimuth and elevation angles through construction of three cross-correlation matrices from the collected data of the received signals; this implies that the noise reduces significantly in the reconstructed data matrices; () it derives a parallel factor analysis (PARAFAC) model and applies trilinear least squares method to avoid pair matching problem between 2D DOA azimuth and elevation angles for multiple sources; () it does not require spectral peak searching; and () it has better 2D DOA estimation compared with signal parameters via rotational invariance technique and fourth-order signal parameters via rotational invariance technique. Simulation results demonstrate the estimation accuracy and the effectiveness of the proposed method.