DoA Estimation of Line of Sight Signal in Multipath Channel for GNSS Receiver

Sunwoo KIM  Byeong-Chan JO  Sanguk LEE  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.11   pp.3397-3400
Publication Date: 2009/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.3397
Print ISSN: 0916-8516
Type of Manuscript: Special Section LETTER (Special Section on Satellite Communication Technologies in Conjunction with Main Topics of JC-SAT2008)
GNSS,  Minimum-Norm,  matching pursuit,  DoA estimation,  

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The GNSS receivers suffer from the multipath interference which is highly correlated with the line of sight (LoS) signal. Such interference results in tracking and ranging errors. In this paper, we propose a novel algorithm that can estimate the direction of arrival (DoA) of the LoS signal in the presence of highly correlated multipath interference. The proposed algorithm combines the matching pursuits algorithm for multipath estimation and the minimum norm algorithm for DoA estimation. An efficient combination of two algorithms yields reliable estimates of the DoA of LoS signal as demonstrated by computer simulations.