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Mathematical Problems in Engineering
Volume 2015 (2015), Article ID 140345, 9 pages
http://dx.doi.org/10.1155/2015/140345
Research Article

A New Acquisition Algorithm with Elimination Side Peak for All BOC Signals

School of Information Science and Engineering, Shenyang Ligong University, Shenyang 110159, China

Received 21 January 2015; Accepted 15 March 2015

Academic Editor: Francesco Tornabene

Copyright © 2015 Fang Liu and Yongxin Feng. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new inhibition side peak acquisition (ISPA) algorithm is proposed for binary offset carrier (BOC) modulated signals, which will be utilized in global navigation satellite systems (GNSS). We eliminate all side peaks of the BOC correlation function (CF) by structuring special sequences composed of PRN code and cycle rectangular sequences. The new algorithm can be applied to both generic sine- and cosine-phased BOC signals, as well as to all modulation orders. Theoretical and simulation results demonstrate that the new algorithm can completely eliminate the ambiguity threat in the acquisition process, and it can adapt to lower SNR. In addition, this algorithm is better than the traditional algorithms in acquisition performance and inhibition side peak ability.