Title: New Solutions on the Design of a Galileo Acquisition-Aiding Signal to Improve the TTFF and the Sensitivity
Author(s): Lorenzo Ortega Espluga, Charly Poulliat, Marie-Laure Boucheret, Marion Aubault, Hanaa Al Bitar
Published in: Proceedings of the 2018 International Technical Meeting of The Institute of Navigation
January 29 - 1, 2018
Hyatt Regency Reston
Reston, Virginia
Pages: 810 - 825
Cite this article: Espluga, Lorenzo Ortega, Poulliat, Charly, Boucheret, Marie-Laure, Aubault, Marion, Bitar, Hanaa Al, "New Solutions on the Design of a Galileo Acquisition-Aiding Signal to Improve the TTFF and the Sensitivity," Proceedings of the 2018 International Technical Meeting of The Institute of Navigation, Reston, Virginia, January 2018, pp. 810-825.
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Abstract: The design of a new GNSS signal is always a trade-off between improving performance and increasing complexity, or even between improving different performance criteria. Position accuracy, receiver sensitivity (acquisition, tracking or data demodulation thresholds) or the Time-To-First-Fix (TTFF) are examples of those GNSS receivers performance criteria. Within the framework of Galileo 2nd Generation (G2G), adding a new signal component dedicated to aid the acquisition process on E1 can help to improve performance of GNSS receivers with respect to these criteria as it was shown in [1]. In order to create this new component, various aspects such as the spreading modulation, the data navigation content, the channel coding or the Pseudo-Random Noise (PRN) codes must be studied. To this end, this paper firstly proposes the study of new spreading modulations, and secondly, we investigate on PRN codes that can be well suited to the proposed Acquisition-Aiding signal.