High-Fidelity Signal Deformation Analysis of Live Sky Galileo E1 Signals using a ChipShape Software GNSS Receiver

摘要

All signals broadcast by GNSS satellites contain subtle deformations originating from their signal generation and transmission hardware. These nominal deformations have been previously characterized for GPS-SPS. This paper reports on initial signal deformation analysis for the Galileo constellation of June 2015. The analysis includes chip shape characterization and the estimation of pseudorange natural biases. The results presented are relevant for signal authentication as well as for GNSS ground-based augmentation systems (GBAS) where the characterization of natural biases is important for accuracy and integrity.