Performance Evaluation of L2C Data/Pilot Combined Carrier Tracking

Kannan Muthuraman, Richard Klukas, Gérard Lachapelle

Abstract:	Inclusion of the pilot channel in addition to the navigation data channel is considered one of the major changes in GNSS modernization. A pilot channel undergoes similar path delays and shifts as a data channel, thus making data/pilot combined tracking attractive. This combination is often not straight forward for carrier phase tracking due to the presence of data bits on the data channel. In addition, the inherent advantages of a pure PLL are often lost in such a combination. Two novel methods to combine the data/pilot channels effectively without compromising the advantages gained by using a pure PLL are proposed. These two methods are evaluated in comparison with architectures already available in literature. Results indicate that the proposed algorithms perform closer to a PLL in terms of minimum required ??/???? to maintain lock with the added advantage of reduced tracking jitter.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	1658 - 1666
Cite this article:	Muthuraman, Kannan, Klukas, Richard, Lachapelle, Gérard, "Performance Evaluation of L2C Data/Pilot Combined Carrier Tracking," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 1658-1666.
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