High-Speed Data Acquisition System for GNSS Applications

Abstract

This paper presents the design and implementation of a versatile high speed data acquisition system for GNSS signals capable of transferring large amounts of data to a PC. Results obtained of partial validation tests are also shown. The proposed acquisition board is intended as a laboratory instrument that allows simultaneous reception and sampling of GNSS signals in the L1 and L5 bands and their transmission to a PC via a USB 3.0 protocol for subsequent processing. This device is suitable for development and testing of new GNSS signal processing algorithms for which real signal samples are required. The correct functioning of the device was verified for GPS L1, Galileo E1b and GLONASS L1 signals by performing a satellite acquisition analysis on a PC. In addition the satellite tracking performance was validated for a satellite of Galileo using the recorded data.