Positioning Performance Limits of GNSS Meta-Signals and HO-BOC Signals - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Sensors Année : 2020

Positioning Performance Limits of GNSS Meta-Signals and HO-BOC Signals

Résumé

Global Navigation Satellite Systems (GNSS) are the main source of position, navigation, and timing (PNT) information and will be a key player in the next-generation intelligent transportation systems and safety-critical applications, but several limitations need to be overcome to meet the stringent performance requirements. One of the open issues is how to provide precise PNT solutions in harsh propagation environments. Under nominal conditions, the former is typically achieved by exploiting carrier phase information through precise positioning techniques, but these methods are very sensitive to the quality of phase observables. Another option that is gaining interest in the scientific community is the use of large bandwidth signals, which allow obtaining a better baseband resolution, and therefore more precise code-based observables. Two options may be considered: (i) high-order binary offset carrier (HO-BOC) modulations or (ii) the concept of GNSS meta-signals. In this contribution, we assess the time-delay and phase maximum likelihood (ML) estimation performance limits of such signals, together with the performance translation into the position domain, considering single point positioning (SPP) and RTK solutions, being an important missing point in the literature. A comprehensive discussion is provided on the estimators’ behavior, the corresponding ML threshold regions, the impact of good and bad satellite constellation geometries, and final conclusions on the best candidates, which may lead to precise solutions under harsh conditions. It is found that if the receiver is constrained by the receiver bandwidth, the best choices are the L1-M or E6-Public Regulated Service (PRS) signals. If the receiver is able to operate at 60 MHz, it is recommended to exploit the full-bandwidth Galileo E5 signal. In terms of robustness and performance, if the receiver can operate at 135 MHz, the best choice is to use the GNSS meta-signals E5 + E6 or B2 + B3, which provide the best overall performances regardless of the positioning method used, the satellite constellation geometry, or the propagation conditions.
Fichier principal
Vignette du fichier
Ortega_26819.pdf (1.48 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02974941 , version 1 (22-10-2020)

Identifiants

Citer

Lorenzo Ortega, Daniel Medina, Jordi Vilà-Valls, François Vincent, Eric Chaumette. Positioning Performance Limits of GNSS Meta-Signals and HO-BOC Signals. Sensors, 2020, 20 (12), pp.3586-3613. ⟨10.3390/s20123586⟩. ⟨hal-02974941⟩

Collections

TESA
46 Consultations
69 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More