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A Main Peak Extraction Method for High-Order BOC Signals

Published online by Cambridge University Press:  30 May 2017

Fang Liu  and
Yongxin Feng
Fang Liu*
Affiliation:
(School of Information Science and Engineering, Shenyang Ligong University, Shenyang, 110159, China)
Yongxin Feng
Affiliation:
(School of Information Science and Engineering, Shenyang Ligong University, Shenyang, 110159, China)
*
(E-mail: zhqing1019@163.com)
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Abstract

Binary Offset Carrier (BOC) modulation signals have been applied in Global Navigation Satellite Systems (GNSS) because they offer a higher positioning accuracy and higher multipath rejection. However, there is a drawback in that the autocorrelation functions have multiple side peaks, meaning that this technique also leads to the large main peak estimation error problem and a low correlation decision efficiency problem. In this paper, we propose a new Main Peak Extraction (MPE) method for high-order BOC signals to solve these problems. In the new method, the synthesis cross-correlation function is established, and the geometry graph is formatted to calculate the estimation main peak. We eliminate all side peaks and improve the main peak phase estimation precision under the condition that the sub-carrier phase is offset. The results of the simulation demonstrate that the new method can achieve better main peak decision efficiency, side peak cancellation ability and phase estimation performance than traditional methods.

Keywords

GNSSSatellite NavigationBeiDouSoftware Receiver
Type
Research Article
Information
The Journal of Navigation , Volume 70 , Issue 5 , September 2017 , pp. 1153 - 1169
Copyright
Copyright © The Royal Institute of Navigation 2017 

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