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A Bayesian lower bound is proposed as a new baseline for the positioning accuracy provided by satellite radionavigation signals in the presence of Gaussian noise and interference. Positioning accuracy is typically investigated using the Crame??r-Rao Bound (CRB), but the CRB does not always constitute a tight benchmark. The proposed bound is used to obtain a threshold on signal energy that indicates...
This paper introduced an enhanced GPS software receiver which can rapidly process weak signals in challenging environments. In the traditional GPS receivers, the acquisition and tracking of the signals are usually processed by hardware devices, such as the application specific integrated circuits (ASIC). The main disadvantage of ASIC is the high cost of system reconstructions. While a GPS software...
Modern and modernized global navigation satellite system (GNSS) signals exhibit significant structural innovations such as the use of two channels, namely the data and pilot components, which separately carry the navigation message and ranging information. These innovations have stimulated the development of new techniques that fully exploit the potential of these new signals. This paper analyses...
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