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Sensors 2018, 18(1), 119; https://doi.org/10.3390/s18010119

A Novel Residual Frequency Estimation Method for GNSS Receivers

The International Collaboration Centre for Research and Development on Satellite Navigation Technology in South East Asia (NAVIS), Hanoi University of Science and Technology, Hanoi 100000, Vietnam
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Received: 13 September 2017 / Revised: 14 December 2017 / Accepted: 14 December 2017 / Published: 4 January 2018
(This article belongs to the Section Remote Sensors)
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Abstract

In Global Navigation Satellite System (GNSS) receivers, residual frequency estimation methods are traditionally applied in the synchronization block to reduce the transient time from acquisition to tracking, or they are used within the frequency estimator to improve its accuracy in open-loop architectures. There are several disadvantages in the current estimation methods, including sensitivity to noise and wide search space size. This paper proposes a new residual frequency estimation method depending on differential processing. Although the complexity of the proposed method is higher than the one of traditional methods, it can lead to more accurate estimates, without increasing the size of the search space. View Full-Text
Keywords: GNSS signal processing; frequency estimation; closed-loop tracking; open-loop tracking; differential processing GNSS signal processing; frequency estimation; closed-loop tracking; open-loop tracking; differential processing
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Nguyen, T.T.-T.; La, V.T.; Ta, T.H. A Novel Residual Frequency Estimation Method for GNSS Receivers. Sensors 2018, 18, 119.

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