RT Journal Article
SR Electronic
T1 Development and Validation of a Multipath Mitigation Technique Using Multi-Correlator Structures
JF NAVIGATION: Journal of the Institute of Navigation
JO NAVIGATION
FD Institute of Navigation
SP navi.609
DO 10.33012/navi.609
VO 70
IS 4
A1 Christian Siebert
A1 Andriy Konovaltsev,
A1 Michael Meurer
YR 2023
UL https://navi.ion.org/content/70/4/navi.609.abstract
AB Multipath propagation is a major source of error in global navigation satellite systems (GNSSs), especially in urban environments. This is because conventional GNSS receivers can provide biased range estimates that lead to positioning errors. In this paper, an Extended Kalman Filter (EKF)-based solution that relies on a multi-correlator structure is proposed to replace the conventional delay locked loop (DLL). The underlying signal model incorporates the radio propagation channel between the satellite and receiver and thus inherently accounts for reflected signal replicas. The algorithm was evaluated with simulations and hardware emulations and a measurement campaign was conducted in road traffic with different multipath environments. Our results revealed that the proposed EKF was very effective against multipath-associated error.