GPS 50 Hz data set for the case study entitled "Comparison of TEC calculations based on Trimble, Javad, Leica and Septentrio GNSS receiver data". Part 1

This dataset contains 50 Hz GPS data to explore JAVAD and Leica receivers quality to reconstruct slant TEC.

GNSS receiver is to some extent a “black box” when its data is used for ionospheric studies. The results based on Javad, Septentrio, Trimble and Leica GNSS receivers (which is placed in this data set) proved that the accuracy of the slant Total Electron Content (TEC) calculation can differ significantly if data used for its calculation is from different GNSS receiver make/type. This is because TEC measurements depend on the carrier phase tracking technique applied in a receiver. Based on this data it was found that:

1) Correlation coefficient between carrier phase noises in L1 and L2 channel outputs may be considered as an indicator showing whether the L1-aided tracking technique or independent tracking is applied.

2) The empirical model of TEC noise component was provided to determine TEC noise value in GNSS receivers of different make/type.