DocumentCode :
1684406
Title :
An interactive multiple model approach for robust GNSS carrier phase tracking under scintillation conditions
Author :
Vila-Valls, Jordi ; Lopez-Salcedo, Jose A. ; Seco-Granados, Gonzalo
Author_Institution :
Univ. Autonoma de Barcelona (UAB), Bellaterra, Spain
fYear :
2013
Firstpage :
6392
Lastpage :
6396
Abstract :
This contribution deals with robust carrier phase tracking in Global Navigation Satellite Systems, where the ultimate goal is to obtain accurate and robust phase estimates under non-nominal conditions, such as high dynamics, strong fading and ionospheric scintillation. Within this framework, an Interacting Multiple Model approach, using a bank of parallel Kalman-based filters with different dynamic state models, is proposed to cope with signals corrupted by severe ionospheric scintillation. In the proposed formulation, the time-varying and correlated scintillation phase is introduced into the dynamic system using an AR(1) model. Simulation results are provided to show the enhanced robustness and improved accuracy of the proposed approach, with respect to state-of-the-art carrier phase tracking techniques.
Keywords :
Kalman filters; ionospheric electromagnetic wave propagation; phase estimation; radiowave propagation; satellite navigation; time-varying filters; correlated scintillation phase; dynamic state models; dynamic system; enhanced robustness; global navigation satellite systems; interacting multiple model approach; interactive multiple model approach; ionospheric scintillation; nonnominal conditions; parallel Kalman-based filters; phase estimates; robust GNSS carrier phase tracking; robust carrier phase tracking; scintillation conditions; state-of-the-art carrier phase tracking techniques; time-varying phase; Computational modeling; Global Navigation Satellite Systems; Global Positioning System; Mathematical model; Noise; Receivers; Robustness; GNSS; carrier phase; interactive multiple models; ionospheric scintillation; robust tracking;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2013 IEEE International Conference on
Conference_Location :
Vancouver, BC
ISSN :
1520-6149
Type :
conf
DOI :
10.1109/ICASSP.2013.6638896
Filename :
6638896
Link To Document :
بازگشت