Adaptive Tracking Techniques in Non-Stationary Environments

André Pousinho, Manuel Toledo, Teresa Ferreira, José A. López-Salcedo, Sergi Locubiche-Serra, Gonzalo Seco-Granados, Miguel A. Ribot, Aleksandar Jovanovic, Cyril Botteron, P.-A. Farine, Rigas Ioannides

Peer Reviewed

Abstract:	The continuously changing environments have been the main challenge for classical GNSS receiver implementations, as they can have a great impact on signal tracking performance and positioning. For this reason techniques capable of mitigating the impact of time-varying phenomena by adapting to changing conditions, thus improving performance are of great interest. This study reports the benefits of using adaptive techniques for standalone GNSS receivers in three different scenarios. The first scenario compares an adaptive Kalman filter against a classical DLL/PLL architecture in interference environments with user dynamics. The second scenario uses a multipath propagation channel to test alternative carrier tracking architectures which provide better results in terms of robustness. The third scenario uses the same multipath propagation channel to test the adaptive switching technique, 2-Step, in order to evaluate its capacity of guaranteeing and maintaining unambiguous tracking for BOC-type modulations. In order to assess the performance of these techniques a semi-analytical platform has been used. The results presented here show the benefits and trade-offs of different techniques taking into account different propagation channels and scenarios.
Published in:	Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015) September 14 - 18, 2015 Tampa Convention Center Tampa, Florida
Pages:	3107 - 3115
Cite this article:	Pousinho, André, Toledo, Manuel, Ferreira, Teresa, López-Salcedo, José A., Locubiche-Serra, Sergi, Seco-Granados, Gonzalo, Ribot, Miguel A., Jovanovic, Aleksandar, Botteron, Cyril, Farine, P.-A., Ioannides, Rigas, "Adaptive Tracking Techniques in Non-Stationary Environments," Proceedings of the 28th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2015), Tampa, Florida, September 2015, pp. 3107-3115.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In