A New Multipath Mitigation Method for GNSS Receivers Based on an Antenna Array

the potential of small antenna array for multipath mitigation in GNSS systems is considered in this paper. To discriminate the different incoming signals (Line of sight and multipaths), a new implementation of the well known SAGE algorithm is proposed. This allows a significant complexity reduction and it is fully compatible with conventional GNSS receivers. Theoretical study thanks to the Cramer Rao Bound derivation and tracking simulation results (in static and dynamic scenarios) show that the proposed method is a very promising approach for the multipath mitigation problem in GNSS receivers.

[1]  Pau Closas,et al.  A particle filtering tracking algorithm for GNSS synchronization using Laplace’s method , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[2]  Patrick Robertson,et al.  Joint Bayesian positioning and multipath mitigation in GNSS , 2008, 2008 IEEE International Conference on Acoustics, Speech and Signal Processing.

[3]  Guillaume Carrie,et al.  Optimal STAP algorithms to GNSS receivers , 2006 .

[4]  H. Akaike,et al.  Information Theory and an Extension of the Maximum Likelihood Principle , 1973 .

[5]  Patrick Robertson,et al.  Bayesian Time Delay Estimation of GNSS Signals in Dynamic Multipath Environments , 2008 .

[6]  Josef A. Nossek,et al.  Maximum likelihood delay estimation in a navigation receiver for aeronautical applications , 2008 .

[7]  Gonzalo Seco-Granados,et al.  ML estimator and hybrid beamformer for multipath and interference mitigation in GNSS receivers , 2005, IEEE Transactions on Signal Processing.

[8]  Manuel Cuntz,et al.  Calibration of adaptive antennas in Satellite Navigation receivers , 2010, Proceedings of the Fourth European Conference on Antennas and Propagation.

[9]  Bradford W. Parkinson,et al.  Global positioning system : theory and applications , 1996 .

[10]  Eddie N. Rosario,et al.  Multipath Mitigation Performance of Planar GPS Adaptive Antenna Arrays for Precision Landing Ground Stations , 2000 .

[11]  Achim Hornbostel,et al.  Performance assessment of antenna array algorithms for multipath and interferers mitigation , 2007 .

[12]  Eddie N. Rosario,et al.  GPS Microstrip Antenna Array on a Resistivity Tapered Ground Plane for Multipath Mitigation , 2000 .

[13]  Klaus I. Pedersen,et al.  Channel parameter estimation in mobile radio environments using the SAGE algorithm , 1999, IEEE J. Sel. Areas Commun..

[14]  François Vincent,et al.  A new tracking approach for multipath mitigation based on antenna array , 2011 .

[15]  Guillaume Carrie,et al.  Multipath mitigation methods based on antenna array , 2010 .

[16]  Guillaume Carrie,et al.  Comparison of SAGE and classical multi-antenna algorithms for multipath mitigation in real-world environment , 2010, 2010 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC).

[17]  Alison Brown,et al.  GPS Multipath Mitigation Using a Three Dimensional Phased Array , 2005 .

[18]  R.D.J. Van Nee.  Spread-spectrum code and carrier synchronization errors caused by multipath and interference , 1993 .

[19]  J. K. Ray,et al.  Mitigation of GPS code and carrier phase multipath effects using a multi-antenna system , 2000 .

[20]  Gonzalo Seco Granados,et al.  ML estimator and hybrid beamformer for multipath and interference mitigation in GNSS receivers , 2005 .

[21]  Jesus Selva.  An efficient Newton-type method for the computation of ML estimators in a uniform linear array , 2005, IEEE Transactions on Signal Processing.

[22]  A. J. Van,et al.  Theory and Performance of Narrow Correlator Spacing in a GPS Receiver , 1992 .

[23]  Andreas Lehner,et al.  A novel channel model for land mobile satellite navigation , 2005 .

[24]  R.D.J. van Nee,et al.  The multipath estimating delay lock loop: approaching theoretical accuracy limits , 1993, Proceedings of 1994 IEEE Position, Location and Navigation Symposium - PLANS'94.