Comparison of Joint Data/Pilot High-SensitivityAcquisition Strategies for Indoor Galileo E1 Signal

The demand for location basedand emergency caller localization servicesoperating anytime at anywhere even in indoor environments leads to the development of High Sensitivity (HS) techniques for Global Navigation Satellite System (GNSS) receivers, which can accommodate high degrees of signal attenuation. Up to now, almost all the efforts have been focused on the GPS case; but with the Galileo system in the offing, the navigation community is working aiming to fully exploit all the provided benefits of the new signals. This paper focuses on the join data/pilot acquisition strategies as a mean to design HS algorithms for the Galileo E1 Open Service signal, which later prove their advantages over the Single Channel acquisition strategy currently used in conventional GPS receivers. Additionally, together with the conducted comparisons obtained both by theoretical and simulation results, some application suggestions are also provided as a main contribution of the work.