Spatial Characterization of GNSS Multipath Channels
Joint Authors
Lachapelle, Gérard
Keshvadi, Hatef
Broumandan, Ali
Source
International Journal of Antennas and Propagation
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-16
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Abstract EN
There is a growing interest in detecting and processing Global Navigation Satellite System (GNSS) signals in indoors and urban canyons by handheld devices.
To overcome the signal attenuation problem in such adverse fading environments, long coherent integration is normally used.
Moving the antenna arbitrarily while collecting signals is generally avoided as it temporally decorrelates the signals and limits the coherent integration gain.
This decorrelation is a function of the antenna displacement and geometry of reflectors and angle of arrival of the received signal.
Hence, to have an optimum receiver processing strategy it is crucial to characterize the multipath fading channel parameters.
Herein, Angle of Arrival (AoA) and Angle Spread (AS) along with signal spatial correlation coefficient and fading intensity in GNSS multipath indoor channels are defined and quantified theoretically and practically.
A synthetic uniform circular array utilizing a right-hand circular polarized (RHCP) antenna has been used to measure the spatial characteristics of indoor GNSS fading channels.
Furthermore, rotating effect of a circular polarized antenna on the synthetic array processing and AoA estimation has been characterized.
The performance of the beamforming technique via array gain is also assessed to explore the advantages and limitations of beamforming in fading conditions.
American Psychological Association (APA)
Keshvadi, Hatef& Broumandan, Ali& Lachapelle, Gérard. 2012. Spatial Characterization of GNSS Multipath Channels. International Journal of Antennas and Propagation،Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-456161
Modern Language Association (MLA)
Keshvadi, Hatef…[et al.]. Spatial Characterization of GNSS Multipath Channels. International Journal of Antennas and Propagation No. 2012 (2012), pp.1-15.
https://search.emarefa.net/detail/BIM-456161
American Medical Association (AMA)
Keshvadi, Hatef& Broumandan, Ali& Lachapelle, Gérard. Spatial Characterization of GNSS Multipath Channels. International Journal of Antennas and Propagation. 2012. Vol. 2012, no. 2012, pp.1-15.
https://search.emarefa.net/detail/BIM-456161
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-456161