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An Enhanced SDPE Method for Long Delay Multipath Mitigation in GNSS Applications

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Proceedings of the 8th International Conference on Sciences of Electronics, Technologies of Information and Telecommunications (SETIT’18), Vol.2 (SETIT 2018)

Part of the book series: Smart Innovation, Systems and Technologies ((SIST,volume 147))

Abstract

In Global Navigation Satellite System (GNSS) applications, the Binary Offset Carrier (BOC) modulation provides superior benefits vis-a-vis the classical Binary Phase Shift Keying (BPSK) one. Nevertheless, this modulation type presents a major drawback due to the presence of secondary peaks in envelope of the received signal Autocorrelation Function (ACF). This is due to the fact that the ACF side peaks may create false lock points in the Discrimination Function (DF) envelope of the Delay Locked Loop (DLL) structure, producing ambiguity in both acquisition and tracking processes. In the present paper, the Strobe Double Phase Estimator (SDPE) technique for multipath (MP) effect reduction is used in BOC modulated signals acquisition and its performance is analyzed and then enhanced by applying a proposed scheme that is efficient and valid for all BOC modulated signals. The suggested method is based on the use of the SDPE approach for coherent configuration in conjunction with the same approach for non-coherent configuration. As result, the ACF resulting from this combination is unambiguous. Besides, a large evaluative comparison between the new algorithm and the SDPE technique is achieved together with a performance evaluation of the proposed method in MP environment based on the Root Mean Square Error (RMSE) criterion. The obtained results have shown that our proposed scheme presents better performances in the presence of MP.

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Abbreviations

SDPE::

Strobe Double Phase Estimator

MP::

Multipath

BOC::

Binary Offset Carrier

ACF::

Autocorrelation Function

RMSE::

Root Mean Square Error

GPS::

American Global Positioning System

GNSS::

Global Navigation Satellite Systems

DF::

Discrimination Function

DLL::

Delay Locked Loop

SPLL::

Subcarrier Phase Locked Loop

DPE::

Double Phase Estimator

CF::

Correlation Function

PLL::

Phase Locked Loop

N::

Modulation order

HRC::

High Resolution Correlator

LOS::

Line of Sight

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Authors and Affiliations

  1. Electronics Department, ETA Laboratory, Mohamed El Bachir El-Ibrahimi University of Bordj Bou Arreridj, 34031, Bordj Bou Arreridj, Algeria

    Wafa Feneniche, Khaled Rouabah, Mustapha Flissi, Salim Atia, Sabrina Meguellati & Salah Eddine Mezaache

Authors
  1. Wafa Feneniche
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  2. Khaled Rouabah
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  3. Mustapha Flissi
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  4. Salim Atia
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  5. Sabrina Meguellati
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  6. Salah Eddine Mezaache
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Corresponding author

Correspondence to Wafa Feneniche .

Editor information

Editors and Affiliations

  1. SETIT Lab, University of Sfax, Sfax, Tunisia

    Med Salim Bouhlel

  2. DIBRIS - University of Genoa, Genova, Genova, Italy

    Stefano Rovetta

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Feneniche, W., Rouabah, K., Flissi, M., Atia, S., Meguellati, S., Mezaache, S.E. (2020). An Enhanced SDPE Method for Long Delay Multipath Mitigation in GNSS Applications. In: Bouhlel, M., Rovetta, S. (eds) Proceedings of the 8th International Conference on Sciences of Electronics, Technologies of Information and Telecommunications (SETIT’18), Vol.2. SETIT 2018. Smart Innovation, Systems and Technologies, vol 147. Springer, Cham. https://doi.org/10.1007/978-3-030-21009-0_8

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