Signal quality checks for multipath detection in GNSS

Author

Franco-Patino, Diego M. ; Seco-Granados, Gonzalo ; Dovis, Fabio

Author_Institution

Dipt. di Elettron. e Telecomun., Politec. di Torino, Turin, Italy

fYear

2013

fDate

25-27 June 2013

Firstpage

1

Lastpage

6

Abstract

In GNSS, one of the most important degradations in the signal is caused by the multipath effect, which introduces a bias that impacts the user´s position accuracy. The multipath components are attenuated and delayed versions of the transmitted signal, and they are produced by reflections on different obstacles or objects. The aim of this paper is to analyze and compare two multipath detection techniques, namely the Slope Asymmetry Metric (SAM) and the C/N₀ evolution, as possible tools to check the quality of the signal in different scenarios. It is shown that while both techniques can provide information about the presence of multipath, the SAM is in general more sensitivity to this effect.

Keywords

multipath channels; satellite navigation; sensitivity; GNSS; SAM; multipath components; multipath detection technique; sensitivity; signal quality checks; signal transmission; slope asymmetry metric; user position accuracy; Buildings; Correlation; Measurement; Receivers; Reflection; Satellites; Standards;

fLanguage

English

Publisher

ieee

Conference_Titel

Localization and GNSS (ICL-GNSS), 2013 International Conference on

Conference_Location

Turin

ISSN

2325-0747

Print_ISBN

978-1-4799-0484-6

Type

conf

DOI

10.1109/ICL-GNSS.2013.6577268

Filename

6577268