Journal ArticleDOI
A Novel Multipath Mitigation Technique for GNSS Signals in Urban Scenarios
Anil Kumar,Arun Kumar Singh +1 more
TLDR
It is shown that the proposed technique provides significant improvements over the current state of the art techniques like high resolution correlator/double delta correlator and narrow correlator on general multipath scenarios encountered in the urban settings.Abstract:
In typical urban or suburban environments, multipath poses a serious threat to the accuracy of position determined by a global navigation satellite system (GNSS) receiver. In this paper, a novel multipath mitigation technique is proposed for general multipath scenarios encountered in the urban settings. In the proposed technique, a double differentiated correlation function based histogram output is used to estimate the code delay. It is shown that the proposed technique provides significant improvements over the current state of the art techniques like high resolution correlator/double delta correlator and narrow correlator. The results hold for general multipath models for the mobile-satellite channels. The performance guarantees include closed form expressions for the probability of correct delay estimate and simulation results for the average range error variation with respect to carrier to noise ratio (CNR), signal bandwidth and different channel settings.read more
Citations
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Journal ArticleDOI
Time reversal detection in a multistatic radar system with a varying environment
Journal ArticleDOI
A Multipath Processing Technology Based on Multiparameter-Combined Observation in GNSS
TL;DR: In this article, the influence of GNSS satellite orbit parameters on multipath fading frequency and established a multipath signal model related to satellite orbital parameters for the ground multipath reflection model.
Journal ArticleDOI
A Framework of Multipath Mitigation With Joint Multipath-Doppler Diversity for RF Relative Measurement
TL;DR: A framework that exploits joint multipath-Doppler diversity is proposed to reduce multipath errors and improve the measurement accuracy, and has a significant performance improvement over existing multipath mitigation methods.
Journal ArticleDOI
Seamless Accurate Positioning in Deep Urban Area Based on Mode Switching Between DGNSS and Multipath Mitigation Positioning
TL;DR: In this article , a real-time multipath estimation and mitigation technique was proposed to compensate for the time offset between constellations in urban areas, which can be effectively utilized for automobiles in a deep urban environment without any help from sensors other than GNSS.
Journal ArticleDOI
A Superresolution Multipath Estimation Algorithm for DSSS Systems
Fengyu Wang,Wei Cui,Jing Tian +2 more
TL;DR: In this article, a superresolution multipath estimation method based on waveform replacement and adaptive-filtering is proposed, where the continuous pseudorandom noise code autocorrelation waveform of the matched filtering output is first replaced by a designed triangular pulse waveform, and a reiterative minimum mean-square error adaptive filtering approach is applied to realize superresolution estimation of multipath parameters.
References
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Measuring the Navigation Multipath Channel – A Statistical Analysis
TL;DR: This paper gives detailed information about echo occurrences, birth and death rates, life times of echoes and their power and delay distributions, dependencies of the channel characteristics on elevation and azimuth and compare different channel types and presents the MNC model for this application type.
Journal ArticleDOI
The Mitigation of Multipath Errors by Strobe Correlators in GPS/GLONASS Receivers
TL;DR: An effective method of decreasing multipath errors in GPS or GPS/GLONASS receivers by changing delay lock loop correlator reference signal is discussed, which eliminates the multipath error completely if the difference in delays of direct and reflected signal is more than 30 m, and decreases this error for smaller delays.
Journal ArticleDOI
Multipath Estimation in Multicorrelator GNSS Receivers using the Maximum Likelihood Principle
TL;DR: A closed-form solution of the nonlinear estimation problem is proposed where the estimation of the LOS delay is performed using a grid search approach and the observations are obtained in the presence of nonwhite Gaussian noise due to the correlation between samples.
Journal ArticleDOI
GNSS Multipath-Resistant Cooperative Navigation in Urban Vehicular Networks
TL;DR: The proposed techniques significantly improve the positioning accuracy of all vehicles and outperform the conventional cooperative positioning (CP) technique in urban multipath environments.
Journal ArticleDOI
A versatile framework for a narrow- and wide-band statistical propagation model for the LMS channel
F.P. Fontan,M.A.V. Castro,J. Kunisch,J. Pamp,E. Zollinger,S. Buonomo,P. Baptista,B. Arbesser +7 more
TL;DR: This paper summarises some of the activities to be carried out under ESA (European Space Agency) Contract No 12409/97/NL/NB for the development of a "Statistical Model for the LMS Channel".
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Code Range and Carrier Phase Multipath Mitigation Using SNR, Range and Phase Measurements in a Multi-Antenna System
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