Analysis of Multifrequency GNSS Signals and an Improved Single-Epoch RTK Method for Medium-Long Baseline

<div>The visible satellite numbers and PDOP values of Galileo, BDS-2, GPS, and combined Galileo/BDS-2/GPS systems for the cutoff elevation of 10° and 35° at the FXTH station on August 21, 2018; labels “E,” “C,” “G,” and “E + C + G” denote the Galileo, BDS-2, GPS, and combined Galileo/BDS-2/GPS systems, respectively.</div>

International Journal of Aerospace Engineering

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Figure 3: Analysis of Multifrequency GNSS Signals and an Improved Single-Epoch RTK Method for Medium-Long Baseline 