A Survey on Offline Signal Quality Analysis for Different Methods

Abstract

The performance of navigation system depends on the quality of navigation signal. Additionally, if the quality of navigation signal gets worse than it can make the system unavailable. To achieve precise navigation, positioning, velocity and timing, navigation signal quality are of vital importance. The PVT results may be affected due to some unpredictable anomalies in satellite. signal analysis for offline received signal includes time domain, correlation domain and frequency domain (spectrum) parameters, which includes the scatter plot, eye diagram, PN chip shape, spectrum, correlation function and correlation loss. Through monitoring and in depth analysis of the signal quality. This paper introduces signal quality analysis classifications and makes use of these classifications to categorized and review various methods: open loop process, close loop method and SDR for beidou.