Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-25T05:58:51.319Z Has data issue: false hasContentIssue false
  • English
  • Français

Bit Sign Transition Cancellation Method for GNSS Signal Acquisition

Published online by Cambridge University Press:  25 November 2011

Kewen Sun  and
Letizia Lo Presti
Kewen Sun*
Affiliation:
(School of Computer & Information, Hefei University of Technology, China)
Letizia Lo Presti
Affiliation:
(Department of Electronics, Politecnico di Torino, Italy)
*
(Email: [email protected])
Get access Rights & Permissions [Opens in a new window]

Abstract

The next generation Global Navigation Satellite Systems (GNSS), such as Galileo and Global Positioning System (GPS) modernization, will use signals with equal code and bit periods, resulting in a potential bit sign transition in each primary code period of the received signal segments. A bit sign transition occurring within an integration period usually causes a splitting of the Cross Ambiguity Function (CAF) main peak into two smaller side lobes along the Doppler shift axis in the search space and it may lead to an incorrect Doppler shift estimate, which results in a serious performance degradation of the acquisition system. This paper proposes a novel two steps based bit sign transition cancellation method which can overcome the bit sign transition problem and remove or mitigate the CAF peak splitting impairments. The performance of the proposed technique has been comprehensively evaluated with Monte Carlo simulations in terms of detection and false alarm probabilities, which are presented by Receiver Operating Characteristic (ROC) and Signal-to-Noise-Ratio (SNR) curves. The test results show that the proposed acquisition technique can provide improved performance in comparison with the state-of-the-art acquisition approaches.

Keywords

Bit Sign TransitionCAF Peak SplittingTwo Steps Acquisition
Type
Research Article
Information
The Journal of Navigation , Volume 65 , Issue 1 , January 2012 , pp. 73 - 97
Copyright
Copyright © The Royal Institute of Navigation 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Akopian, D. (2005). Fast FFT based GPS satellite acquisition methods, IEE Proc. Radar, Sonar and Navigation, 152(4), 277–286.CrossRefGoogle Scholar
Bastide, F., Julien, O., Macabiau, C. and Roturier, B. (2002). Analysis of L5/E5 acquisition, tracking and data demodulation thresholds, Proceedings of The Institute of Navigation ION GPS-2002, Portland, Oregon, USA.Google Scholar
Borio, D., Fantino, M. and Lo Presti, L. (2006). Acquisition Analysis for Galileo BOC Modulated Signals: Theory and Simulation, Proceedings of the European Navigation Conference, Manchester, UK.Google Scholar
European Union (2010). Galileo Open Service Signal In Space Interface Control Document, OS SIS ICD, Issue 1.1.Google Scholar
Hegarty, C., Tran, M. and Dierendonck, A. J. V. (2003). Acquisition Algorithms for the GPS L5 Signal, Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation, ION GPS/GNS, Portland, Oregon, USA.Google Scholar
Kaplan, E. D. (2006). Understanding GPS: Principles and Applications, Second Ed., Artech House, USA.Google Scholar
Lo Presti, L., Zhu, X., Fantino, M. and Mulassano, P. (2009). GNSS Signal Acquisition in the Presence of Sign Transition, IEEE Journal of Selected Topics in Signal Processing, 3(4), 557–570.CrossRefGoogle Scholar
Marcum, J. I. (1960). A Statistical Theory of Target Detection By Pulsed Radar, IRE Transactions on Information Theory, 6(2), 59–267.CrossRefGoogle Scholar
Sun, K., Lo Presti, L. and Fantino, M. (2009). GNSS Signal Acquisition in Presence of Sign Transitions, Proceedings of the European Navigation Conference, Naples, Italy.CrossRefGoogle Scholar
Van Nee, D. J. R. and Coenen, A. J. R. M. (1991). New Fast GPS Code-Acquisition Technique Using FFT, Electronics Letters, 27(2), 158–160.CrossRefGoogle Scholar