The Accuracy Potential of Galileo E5/E1 Pseudoranges for Surveying and Mapping

Ismael Colomina, Christian Miranda, M. Eulalia Pares, Marcus Andreotti, Chris Hill, Pedro F. da Silva, Joao S. Silva, Joao F. Galera Monico, Paulo O. Camargo, Jose Diez, Jose Maria Palomo, Silvio E. Barbin, Joao Moreira, Gustavo Streiff, Emerson Z. Granemann, Carmen Aguilera

Abstract:	In the paper we discuss the potential of the new Galileo signals for pseudorange based surveying and mapping in open areas under optimal reception conditions (“open sky” scenarios) and suboptimal ones (multipath created by moderate to thick “tree coverage”). The paper reviews the main features of the Galileo E5 AltBOC and E1 CBOC signals; describes the simulation strategy, models and algorithms to generate realistic E5 and E1 pseudoranges with and without multipath sources; describes the ionosphere modeling strategy, models and algorithms and discusses and presents the expected positioning accuracy and precision results. According to the simulations performed, pseudoranges can be extracted from the Galileo E5 AltBOC signals with tracking errors (1-s level) ranging from 0.02 m (“open sky” scenarios) to 0.08 m (“tree covered” scenarios) whereas for the Galileo E1 CBOC signals the tracking errors range between 0.25 m to 2.00 m respectively. With these tracking errors and with the explicit estimation of the ionosphere parameters, simulations indicate real-time “open sky” cm-level horizontal positioning precisions and dm-level vertical ones and dm-level accuracies for both the horizontal and vertical position components.
Published in:	Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011) September 20 - 23, 2011 Oregon Convention Center, Portland, Oregon Portland, OR
Pages:	2332 - 2340
Cite this article:	Colomina, Ismael, Miranda, Christian, Pares, M. Eulalia, Andreotti, Marcus, Hill, Chris, Silva, Pedro F. da, Silva, Joao S., Monico, Joao F. Galera, Camargo, Paulo O., Diez, Jose, Palomo, Jose Maria, Barbin, Silvio E., Moreira, Joao, Streiff, Gustavo, Granemann, Emerson Z., Aguilera, Carmen, "The Accuracy Potential of Galileo E5/E1 Pseudoranges for Surveying and Mapping," Proceedings of the 24th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2011), Portland, OR, September 2011, pp. 2332-2340.
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