THE EFFECT OF GPS-SIGNAL QUALITY ON TIMING ACCURACY OF SEA 9724 AND NI 9467 GPS MODULES SYNCHRONIZATION

摘要

The work results from the research of PPS-signals mistiming derived from SEA 9724 and NI 9467 GPS receiver modules. Effect of the number of satellites being tracked and tracking time has been studied. The mistiming value does not exceed PPS 0.1 μs at number of satellites greater than 5 for SEA 9724 and greater than 3 for NI 9467. It is proposed to use the value of co-ordinates as the initial information which will allow oscillating PPS at the number of satellites fewer than 4.