An Unambiguous Tracking Scheme Using Partial-Pulses for BOC Signals

 

Y. Lee¹, S. R. Lee², S. Yoo³, H. Liu⁴ and S. Yoon*⁵

 

¹ Samsung Electronics, Suwon, Korea.

² Department of Information and Electronics Engineering, Mokpo National University, Muan, Korea.

³ Department of Electronics Engineering, Konkuk University, Seoul, Korea.

⁴ School of Electrical Engineering and Computer Science, Oregon State University, Corvallis, OR, USA.

⁵ College of Information and Communication Engineering, Sungkyunkwan University, Suwon, Korea. *syoon@skku.edu

 

Abstract

The recent researches on the tracking of binary offset carrier (BOC) modulated signals have been studied focusing on resolving the ambiguity problem caused by the multiple side-peaks in BOC autocorrelation. In this paper, we propose a novel unambiguous BOC tracking scheme with an improved tracking performance by using partial-pulses of BOC signals. Firstly, we observe that a sub-carrier consists of two partial rectangular pulses referred to as partial-pulses, and then, generate multiple partial-correlations composing the BOC autocorrelation. Finally, a correlation function with no side-peak is constructed by combining the partial-correlations, and then, a delay lock loop employing the proposed unambiguous correlation function adjusts the phase of the local BOC signals. From numerical results, it is confirmed that the proposed scheme provides a better tracking performance than the conventional schemes in terms of the tracking error standard deviation.

Keywords: Binary offset carrier (BOC), global navigation satellite systems (GNSSs), tracking, side-peaks, ambiguity problem.

 

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Acknowledgments

This research was supported by the National Research Foundation (NRF) of Korea under Grant 2014R1A5A1011478 and by the Convergence Information Technology Research Center (C-ITRC) support program supervised by the National IT Industry Promotion Agency (NIPA) under Grant NIPA-2014-H0401-14-1009 with funding from the Ministry of Science, ICT and Future Planning (MSIP), Korea, and by Priority Research Centers Program through the NRF of Korea under Grant 2009-0093828 with funding from the Ministry of Education, Science and Technology.

 

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