Comparison of Ionospheric Correction Models Applied in Single Frequency GNSS Receivers

Comparison of Single and Dual Frequency GNSS Receivers in the Presence of Ionospheric and Multipath Errors

In this paper, we test the performance of single and dual frequency GPS and Galileo GNSS receivers in terms of satellite-receiver range estimation. In particular, we focus on the e ects caused by ionosphere and multipath propagation. Therefore, the available pseudoranges are assumed to be contaminated with first-order ionospheric delay and measurement errors produced in the code tracking stage....

Ionospheric Propagation Effects on GNSS Signals and New Correction Approaches

Accurate reference ionospheric model for testing GNSS ionospheric correction in EGNOS and Galileo

This work presents a procedure to assess ionospheric models tailored for Global Navigation Satellite System (GNSS) applications. The test is based on actual carrier-phase measurements. Using this strategy, the accuracy of the ionospheric broadcast models for Global Positioning System (GPS), Galileo and the European Geostationary Navigation Overlay System (EGNOS) is assessed. These models are co...

A Method of Side-peak Mitigation Applied to Binary Offset Carrier Modulated Gnss Signals Tracking Applied in Gnss Receivers

In this study, a new method of signal tracking technique in Global Navigation Satellite System (GNSS) is proposed. It is based on a combination of the autocorrelation function (ACF) with another cross correlation function in order to eliminate or reduce the power of the side peaks in ACF of Binary Offset Carrier (BOC) modulated signals. These types of modulated signals are adopted by both GNSSs...

Multipath Mitigation Performance Comparison of Strobe Correlators in GNSS Receivers

This paper introduces effective methods of decreasing multipath errors by utilizing strobe correlators designed for GPS coarse-acquisition (C/A) code for future modernized signals including the BOC (n,n) modulation used for GPS L1C, Galileo E1 and the GLONASS new CDMA signal. The implementation and performance of different types of strobes are compared and discussed. The strobe concept is espec...