Assessment of GNSS signal acquisition sensitivities for indoor and urban scenarios

Signals of Galileo and modernized GPS will provide a new possibility in the next five years that will enable to overcome current limitations in indoor/urban environments. With modernization of GPS L1C, L2C, L5 and full deployment of Galileo, E1b, c, E5a, b, E6 signals will be available. It is therefore of major interest to assess new capabilities of the incoming GNSS signals and their potential for the location based and emergency services in GNSS enabled mobile phone or PDA. In this paper, the acquisition performance of the available GPS and Galileo signals are evaluated related to the receiver sensitivity and the computational complexity within different scenarios. By using a weighting evaluation, we show that GPS L5 pilot signal gives the optimum performance among available signals.