Performance of GPS receivers with more than one multipath

Abstract : A wide majority of studies on the effect of mul-tipath focused on the analysis of the code and phase tracking errors when only two rays enter the tracking loops, namely the direct ray plus one diffracted ray. Un-fortunately, this condition does not correspond to the most frequent situations, where the received signal can be the discrete sum of several powerful replicas of the direct signal. The aim of this paper is to present the theoretical re-sults of a study that identifies the performance of the GPS receivers in the case where more than two powerful rays enter the tracking loops. The theoretical analysis assuming a triangular autocorrelation function with an infinite re-ceiver bandwidth shows that in the case of continuous tracking, if the summed amplitudes of the reflected signals is lower than the amplitude of the direct signal, the code error envelope of the composite signal can be approxi-mated as the sum of the code error envelope for each indi-vidual ray, except in its transition zones. The deviation with respect to the linear superposition assumption is neg-ligible in the ideal case of a triangular autocorrelation function with an infinite receiver bandwidth for the nar-row correlator DLLs and the DLLs controlled by linear combinations of correlator outputs. As the receiver band-width decreases, the non linear effects become more im-portant and the deviation is increased.
Type de document :
Communication dans un congrès
ION GPS 1999, 12th International Technical Meeting of the Satellite Division of The Institute of Navigation, Sep 1999, Nashville, United States. pp 281 - 288, 1999
Liste complète des métadonnées

Littérature citée [8 références]  Voir  Masquer  Télécharger

https://hal-enac.archives-ouvertes.fr/hal-01021687
Contributeur : Laurence Porte <>
Soumis le : vendredi 31 octobre 2014 - 10:06:26
Dernière modification le : vendredi 9 février 2018 - 20:36:01
Document(s) archivé(s) le : lundi 2 février 2015 - 15:21:19

Fichier

100.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

  • HAL Id : hal-01021687, version 1

Collections

Citation

Christophe Macabiau, Benoit Roturier, Abdelahad Benhallam, Eric Chatre. Performance of GPS receivers with more than one multipath. ION GPS 1999, 12th International Technical Meeting of the Satellite Division of The Institute of Navigation, Sep 1999, Nashville, United States. pp 281 - 288, 1999. 〈hal-01021687〉

Partager

Métriques

Consultations de la notice

94

Téléchargements de fichiers

131