Abstract
Although most GNSS monitoring stations located in open and clear places, multipath effects by surrounding environment could not be avoided, which leads to severely degraded observations of GNSS monitoring stations. This paper proposed a multipath detecting method based on antenna arrays, benefiting from different arriving angles of the multipath signal and the satellite signal. This method firstly computes the arriving angle of the satellite signal based on prior information such as satellite ephemeris, the coordinate of the monitoring station, etc. Then the steering vector of the satellite signal is obtained referring to the relative position of the array element. We design the array weights according to the steering vector, so as to minimize the satellite signal power of the array output. Therefore, if there is multipath in the received signal, the correlation peak could be detected in the array output, otherwise could not be detected. So we connect the array output to a GNSS receiver. When the receiver gives out observations such as pseudo-ranges and carrier phases, we predicate multipath to be existed in the received signal. When the receiver is not able to capture the satellite signal, there is no multipath which could affect the observations. Simulations based on software receiver show that the proposed method is able to detect multipath in the received signal quickly and effectively. The results could be used either in evaluating the signal quality of the monitoring stations, or in eliminating the multipath.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Chen K, Gui Q-M, Yue L-Q (2012) A multi correlator based GPS multipath estimation method. J Astronaut 33(9):1241–1247
Xu N-B (2013) A multipath estimation method based on MEDLL improved algorithm. Radio Commun Technol 39(4):11–13
Gao Y, Li Q (2014) Modified narrow correlator spacing method for mitigation short-delay multipath. Measur Control Technol 01:43–46
Han L, Kou Y-H (2011) GNSS signal quality assessment based on multi-frequency processing. In: Proceeding of 2nd China satellite navigation conference, Shanghai
Wang M-L, Wang F-X (2008) An algorithm of multipath error and observation noise weakening in triple-frequency ionospheric delay correction. Acta Geodaetica Cartogr Sin 37(4):418–422
Gan X-L, Li J (2012) A new multipath detection and calibration method for ground based monitoring station. In: Proceeding of 3rd China satellite navigation conference, Guangzhou
Kaplan ED, Hegarty CJ (2007) Kou Y-H translated. understanding GPS: principles and applications, 2nd edn. Publishing House of Electronics Industry, Beijing
Li M, Zeng X-H, Nie J-W, Wang F-X (2011) Analysis on beam pointing error of antenna array receivers in satellite navigation systems. Aerosp Electron Warfare 27(5):19–22
Borre K, Akos D et al (2006) A software-defined GPS and Galileo receiver: a single-frequency approach. Birkhäuser Boston
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Li, M., Zhao, W., Yuan, L., Liu, Q. (2015). A GNSS Multipath Detecting Method Based on Antenna Arrays. In: Sun, J., Liu, J., Fan, S., Lu, X. (eds) China Satellite Navigation Conference (CSNC) 2015 Proceedings: Volume I. Lecture Notes in Electrical Engineering, vol 340. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-46638-4_30
Download citation
DOI: https://doi.org/10.1007/978-3-662-46638-4_30
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-662-46637-7
Online ISBN: 978-3-662-46638-4
eBook Packages: EngineeringEngineering (R0)