Excerpt: Multipath results from reflections of Global navigation satellite signals (GNSS) signals arriving at a receiver that are delayed with respect to the desired line-of-sight (LOS) signals. The delayed signals distort the received LOS signals, thereby causing pseudorange and carrier phase measurement errors. Traditional multipath mitigation techniques include antenna gain pattern shaping (primarily to reduce ground multipath) and correlator gating techniques (such as narrow correlator and double-delta correlator ).
Proceedings of the 2023 International Technical Meeting of The Institute of Navigation
Hahn, Eric, Gunawardena, Sanjeev, Bartone, Chris, "Live-Sky GNSS Signal Processing Using a Dual-Polarized Antenna Array for Multipath Mitigation," Proceedings of the 2023 International Technical Meeting of The Institute of Navigation, Long Beach, California, January 2023, pp. 286-302. https://doi.org/10.33012/2023.18624