Title: Fast DOA estimation method of two-dimensional wideband coherent signals

Authors: Jiaqi Zhen; Qun Ding

Addresses: Department of College of Electronic Engineering, Heilongjiang University, Heilongjiang, China ' Department of College of Electronic Engineering, Heilongjiang University, Heilongjiang, China

Abstract: In the wideband direction-finding algorithms based on the signal subspace methods, the focusing matrix has an important effect on the performance of the estimation. This paper proposed a new method of constructing focusing matrix and the Signal to Noise Ratio (SNR) of the array was equal without any loss before and after focusing. New approach can distinguish the two targets which are close to each other even break the restriction of Rayleigh resolution limitation and has higher accuracy compared to TCT algorithm while the SNR is very low. And it adapts to arbitrary plane array, computer simulation results prove the effective performance of the method.

Keywords: wideband signals; array signal processing; focusing matrix; DOA estimation; direction of arrival; wireless computing; mobile computing; 2D wideband coherent signals; wideband direction finding; signal to noise ratio; SNR; simulation.

DOI: 10.1504/IJWMC.2013.056552

International Journal of Wireless and Mobile Computing, 2013 Vol.6 No.4, pp.362 - 367

Received: 16 May 2013
Accepted: 20 Jun 2013
Published online: 16 Oct 2014 *

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