A simultaneous multiple BeiDou signal acquisition algorithm for a software-based GNSS receiver
Author(s)
Xie, F
Liu, J
Li, R
Feng, S
Type
Journal Article
Abstract
The time needed for a Global Navigation Satellite System (GNSS) receiver to acquire satellite signals is one of the key parameters to assess the performance of a receiver. This presents a challenge for a software receiver in which more frequency bins and satellite codes are required to search using conventional methods. In order to speed up the acquisition process of the BeiDou software receiver in a cold start, this paper proposes a simultaneous multiple Code Division Multiple Access (CDMA) signal acquisition algorithm. The time for searching satellites is reduced by constructing new local codes to enable the capability of detecting the presence of multiple BeiDou satellites. Besides, the individual phase identification approach for each visible satellite is further presented with multiple satellites acquisition. So a search within the PRNs used for the generation of local combined code is performed. Finally, the test results show that the proposed acquisition algorithm can effectively detect multiple BeiDou satellites simultaneously. In addition, the test results show that signal acquisition time can be reduced by 8.7% to 24.1% depending on different combination numbers and different numbers of visible satellites in the combination list.
Date Issued
2015-11-21
Date Acceptance
2015-11-03
Citation
Optik, 2015, 127 (4), pp.1607-1614
ISSN
0030-4026
Publisher
Elsevier
Start Page
1607
End Page
1614
Journal / Book Title
Optik
Volume
127
Issue
4
Copyright Statement
© 2015 Elsevier GmbH. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Subjects
0205 Optical Physics
Optics
Publication Status
Published