Non-Coherent Unambiguous Tracking Method for Cosine-BOC Signals Based on an S-Curve Shaping Technique

A new non-coherent unambiguous tracking method for Cosine-phased Binary Offset Carrier (cosine-BOC) modulated signals based on an S-curve shaping technique is proposed in this letter. This method employs two linearly-combined codes to replace the commonly used multi-correlator structure. An asymmetrical S-curve without any false lock points is generated in the receiver, which is the product of the cross-correlation function between the received cosine-BOC signal and the local linearly-combined code and the cross-correlation function between the received cosine-BOC signal and another local linearly-combined code. Simulation results show that the proposed method has outstanding multipath mitigation performance while maintaining a sufficiently large operating range of the S-curve with both positive and negative delays.

[1]  Zheng Yao,et al.  Pseudo-Correlation-Function-Based Unambiguous Tracking Technique for Sine-BOC Signals , 2010, IEEE Transactions on Aerospace and Electronic Systems.

[2]  Elena Simona Lohan,et al.  Multi-correlator structures for tracking Galileo signals with CBOC and SinBOC(1,1) reference receivers and limited front-end bandwidths , 2010, 2010 7th Workshop on Positioning, Navigation and Communication.

[3]  Jiawei Ren,et al.  Non-Coherent Unambiguous Tracking Method for Composite Binary Offset Carrier Modulated Signals Based on S-Curve Shaping Technique , 2013, IEEE Communications Letters.

[4]  Jyh-Ching Juang,et al.  Weighted discriminators for GNSS BOC signal tracking , 2011, GPS Solutions.

[5]  F. Nunes,et al.  Gating Functions for Multipath Mitigation in GNSS BOC Signals , 2007, IEEE Transactions on Aerospace and Electronic Systems.

[6]  John W. Betz,et al.  The Offset Carrier Modulation for GPS Modernization , 1999 .

[7]  Pat Fenton,et al.  Theory and Performance of Narrow Correlator Spacing in a GPS Receiver , 1992 .

[8]  A. J. Van,et al.  Theory and Performance of Narrow Correlator Spacing in a GPS Receiver , 1992 .

[9]  Jiawei Ren,et al.  Unambiguous S-Curve Shaping Technique for Multipath Mitigation in Cosine-BOC Signals , 2012, IEEE Communications Letters.

[10]  Hui Hua Chen,et al.  Unambiguous S-curve shaping technique for multipath mitigation in Global Navigation Satellite Systems alternative binary offset carrier signals , 2014, Wirel. Commun. Mob. Comput..

[11]  Michael S. Braasch,et al.  GNSS Multipath Mitigation Using Gated and High Resolution Correlator Concepts , 1999 .

[12]  Bernd Eissfeller,et al.  S-Curve Shaping: A New Method for Optimum Discriminator Based Code Multipath Mitigation , 2005 .