Abstract
Various methods have been studied to mitigate the influence of multipath signals, representative methods focused the correlator structure are the Narrow Correlator and the Multipath Elimination Technique (MET). It is known that the MET has better performance than Narrow Correlator but it requires more complexity. In this paper, we propose a technique that has similar performance to the MET and it uses only three correlators like the Narrow Correlator. This technique switches the chip spacing of the correlators for each Predetection Integration Time (PIT) and applies it to the MET. For the performance analysis, we implemented a software platform and compared the code tracking error of the proposed technique with that of the Narrow Correlator and the MET.
Highlights
In urban GNSS navigation applications, the presence of multipath is a dominant source of performance degradation in the pseudorange measurement and the positioning
A well-known algorithm is Narrow Correlator, which reduces the chip space between early and late correlator in order to cut down the impact of multipath on the Delay Lock Loop (DLL) [1]
We propose a multipath mitigation technique which has similar performance to the Multipath Elimination Technique (MET) by using only three correlators
Summary
In urban GNSS navigation applications, the presence of multipath is a dominant source of performance degradation in the pseudorange measurement and the positioning. A well-known algorithm is Narrow Correlator, which reduces the chip space between early and late correlator in order to cut down the impact of multipath on the Delay Lock Loop (DLL) [1]. This algorithm suffers from high sensitivity to noise due to the broad RF bandwidth, and it cannot mitigate short delay multipath. We propose a multipath mitigation technique which has similar performance to the MET by using only three correlators This technique switches the chip spacing between correlators every PIT. It can be expected that the proposed technique would be suitable for low receiver dynamics
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
