Analysis of Multipath Effect in the Tracking Stage using Loop Bandwidth Control Algorithm
Conde N, Cortés I, van der Merwe JR, Rügamer A, Felber W (2022)
Publication Type: Conference contribution
Publication year: 2022
Publisher: Institute of Navigation
Book Volume: 2
Pages Range: 1204-1224
Conference Proceedings Title: 35th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2022
Event location: Denver, CO, USA
ISBN: 9781713871361
Abstract
Multipath severely degrades the tracking performance of global navigation satellite system (GNSS) receivers, creating inaccuracy estimates and possibly causing the loss of lock. Previous research shows multiple methods to detect, suppress, mitigate or correct multipath in various receiver processing stages. However, these methods are implemented at the cost of increased complexity, being challenging to apply in real-time GNSS receivers. This paper evaluates the behavior of the loop-bandwidth control algorithm (LBCA) under controlled multipath scenarios. The proposed technique is a low-complex adaptive tracking architecture using the LBCA. The LBCA is an adaptive tracking technique that adjusts the time of response of the tracking channel based on the discriminator's statistics. This adaptive tracking architecture is implemented in an open software interface GNSS hardware (GOOSE) receiver and is evaluated under simulated controlled multipath scenarios. These scenarios present a non-line-of-sight (NLOS) signal with different time offsets, carrier phase offsets, and frequency offset levels. The results confirm that the LBCA can serve as a multipath suppression technique at fast fading multipath scenarios. Moreover, multipath indicators from the response of the adaptive tracking architecture are found at slow fading multipath scenarios.
Involved external institutions
Germany (DE)How to cite
APA:
Conde, N., Cortés, I., van der Merwe, J.R., Rügamer, A., & Felber, W. (2022). Analysis of Multipath Effect in the Tracking Stage using Loop Bandwidth Control Algorithm. In 35th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2022 (pp. 1204-1224). Denver, CO, USA: Institute of Navigation.
MLA:
Conde, Natalia, et al. "Analysis of Multipath Effect in the Tracking Stage using Loop Bandwidth Control Algorithm." Proceedings of the 35th International Technical Meeting of the Satellite Division of the Institute of Navigation, ION GNSS+ 2022, Denver, CO, USA Institute of Navigation, 2022. 1204-1224.
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