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Unambiguous S-Curve Shaping for Multipath Mitigation for BOC(1,1) Modulated Signals in GNSS

Zhe LIU, Yangbo HUANG, Xiaomei TANG, Feixue WANG

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Zhe LIU
National University of Defense Technology
Yangbo HUANG
National University of Defense Technology
Xiaomei TANG
National University of Defense Technology
Feixue WANG
National University of Defense Technology

Corresponding author

Keywords:GNSS,multipath mitigation,BOC,unambiguous tracking

JOURNALRESTRICTED ACCESS

2015 Volume E98.BIssue 9Pages 1924-1930

DOIhttps://doi.org/10.1587/transcom.E98.B.1924

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Published: September 01, 2015Manuscript Received: January 28, 2015Released on J-STAGE: September 01, 2015Accepted: -Advance online publication: -Manuscript Revised: April 30, 2015

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Article overview

Abstract

A novel multipath mitigation algorithm for binary offset carrier (BOC) signals in the global navigation satellite system (GNSS) is presented. Based on the W2 code correlation reference waveform (CCRW) structure, a series of bipolar reference waveforms (BRWs) is introduced to shape the unambiguous s-curve. The resulted s-curve has a single stable zero-crossing point such that the tracking unambiguity in BOC (1,1) can be solved. At the same time, multipath mitigation capability is improved as well. As verified by simulations, the proposed method matches the multipath mitigation performance of W2 CCRW, and is superior to conventional receiver correlation techniques. This method can be applied in GPS L1 and Galileo E1.

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