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A Novel Unambiguous CBOC Correlation Function With an Improved Main-Peak

Authors:
Keunhong Chae
Seokho Yoon

Keywords: Composite binary offset carrier; Tracking ambiguity; Galileo; global navigation satellite system;

Abstract:
Conventionally, the design of a correlation function for unambiguous tracking of composite binary offset carrier (CBOC) signals has focused on only the elimination of the side-peaks causing the ambiguity in tracking without considering the loss in height and sharpness of the main-peak during the elimination process, thus resulting in a worse tracking performance compared with that corresponding to the CBOC-autocorrelation function. In this paper, we propose a novel correlation function with no side-peaks and a main-peak that is higher and sharper than those of the conventional correlation functions including the CBOC-autocorrelation function, thus enabling us to have not only unambiguity in tracking but also a better tracking performance over that of the CBOC-autocorrelation function. We first split the CBOC sub-carrier into multiple partial sub-carriers and correlate each of them with the received signal, yielding partial correlations. Then, we combine the partial correlations in a specialized way, where the side-peaks are canceled out and the main-peak becomes higher and sharper than that of the CBOC-autocorrelation function. Finally, the proposed correlation function is shown to have no side-peaks and to provide a better tracking performance than those of the conventional correlation functions including the CBOC-autocorrelation function.

Pages: 9 to 13

Copyright: Copyright (c) IARIA, 2016

Publication date: May 22, 2016

Published in: conference

ISSN: 2308-4030

ISBN: 978-1-61208-473-2

Location: Valencia, Spain

Dates: from May 22, 2016 to May 26, 2016