International Journal of Electronics, ( ISI ), Volume (104), No (4), Year (2017-1) , Pages (709-721)

Title : ( Direction of arrival accuracy improvement through estimation of spatial coherence loss function in non-homogeneous environments )

Authors: Atefeh Gholipour Malakshah , Bijan Zakeri , Khlil Mafinezhad ,

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Abstract

Performanceofdirectionofarrival(DOA)estimationissignificantlydegraded inpracticalsituations.Oneoftheconditionsthatdecreasesitsperformance,is the coherent loss caused by the propagation of the wavefront through random non-homogeneous media. Most of the previous methods, such as matrix fitting method and covariance matching technique, need the multidimensional search; therefore their computations are difficult and not suitable for a real-time application. In this paper, a three-stage method based on the generalised eigenvalues utilising signal subspace eigenvectors (GEESE) and Gauss–Newton (GN) algorithms, namely 3SM/GE-GN, is presented. Simulation results show the effectiveness of the proposed method. Difference of RMSE of DOA estimation between proposed method, which is independentofthecoherentloss,andothermethodsismoreclearlyvisiblein higher snapshots. As well, in fixed snapshot, the RMSE of the proposed method is lower than others in different SNRs. Furthermore, the computational time of the simulation is very lower than two previous works

Keywords

, Direction, of, arrival estimation; imperfect spatial coherence; multiplicative noise; non, homogeneous media
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@article{paperid:1061299,
author = {Gholipour Malakshah, Atefeh and Bijan Zakeri and Mafinezhad, Khlil},
title = {Direction of arrival accuracy improvement through estimation of spatial coherence loss function in non-homogeneous environments},
journal = {International Journal of Electronics},
year = {2017},
volume = {104},
number = {4},
month = {January},
issn = {0020-7217},
pages = {709--721},
numpages = {12},
keywords = {Direction-of-arrival estimation; imperfect spatial coherence; multiplicative noise; non-homogeneous media},
}

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%0 Journal Article
%T Direction of arrival accuracy improvement through estimation of spatial coherence loss function in non-homogeneous environments
%A Gholipour Malakshah, Atefeh
%A Bijan Zakeri
%A Mafinezhad, Khlil
%J International Journal of Electronics
%@ 0020-7217
%D 2017

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