A Tracking Scheme using Correlation Value at Advanced Offset Range in Galileo BOC(1,1) Signal 


Vol. 33,  No. 1, pp. 86-93, Jan.  2008


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  Abstract

The Galileo system, a global navigation satellite system (GNSS) developed by E.U., uses the direct sequence/spread spectrum (DS/SS) modulation. A DS/SS-based system performs a fine synchronization between the received and locally generated spreading signals, via atracking process. In the absence of multipath signals, using the symmetric characteristic of the correlation function, the delay lock loop with the early minus late discriminator (EL-DLL) offers the best performance in tracking. However, in the presence of multipath signals, the symmetry of the correlation function could be lost, causing a tracking bias. In this paper, we observe that the correlation values in the advanced offset range remain almost unchanged, due to the multipath signals being received later than a line-of-sight signal. Based on this observation, we propose a novel tracking scheme for a Galileo BOC(1,1) system.

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  Cite this article

[IEEE Style]

S. Yoo, S. Kim, S. Yoon, I. Song, J. T. Kim, S. Y. Kim, "A Tracking Scheme using Correlation Value at Advanced Offset Range in Galileo BOC(1,1) Signal," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 1, pp. 86-93, 2008. DOI: .

[ACM Style]

Seungsoo Yoo, Sanghun Kim, Seokho Yoon, Iickho Song, Jun Tae Kim, and Sun Yong Kim. 2008. A Tracking Scheme using Correlation Value at Advanced Offset Range in Galileo BOC(1,1) Signal. The Journal of Korean Institute of Communications and Information Sciences, 33, 1, (2008), 86-93. DOI: .

[KICS Style]

Seungsoo Yoo, Sanghun Kim, Seokho Yoon, Iickho Song, Jun Tae Kim, Sun Yong Kim, "A Tracking Scheme using Correlation Value at Advanced Offset Range in Galileo BOC(1,1) Signal," The Journal of Korean Institute of Communications and Information Sciences, vol. 33, no. 1, pp. 86-93, 1. 2008.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880