Improving the Design of Frequency Lock Loops for GNSS Receivers

Curran, James T.; Murphy, Colin C.

doi:10.1109/taes.2012.6129674

Cited by 57 publications

(61 citation statements)

References 8 publications

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“…In this model, we introduced a differential block in the frequency error path for evaluating the frequency error. In the following sections, we will use the methods developed in [4,5] for analyzing this structure. The analysis results will be used for the design of an optimized tracking loop.…”

Section: Loop Structurementioning

confidence: 99%

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High Dynamic Optimized Carrier Loop Improvement for Tracking Doppler Rates

Fereidountabar

Cardarilli

2015

Journal of Electrical and Computer Engineering

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Mathematical analysis and optimization of a carrier tracking loop are presented. Due to fast changing of the carrier frequency in some satellite systems, such as Low Earth Orbit (LEO) or Global Positioning System (GPS), or some planes like Unmanned Aerial Vehicles (UAVs), high dynamic tracking loops play a very important role. In this paper an optimized tracking loop consisting of a third-order Phase Locked Loop (PLL) assisted by a second-order Frequency Locked Loop (FLL) for UAVs is proposed and discussed. Based on this structure an optimal loop has been designed. The main advantages of this approach are the reduction of the computation complexity and smaller phase error. The paper shows the simulation results, comparing them with a previous work.

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Section: Loop Structurementioning

confidence: 99%

“…The analysis results will be used for the design of an optimized tracking loop. The in-phase and in-quadrature correlation of the received signal with the locally generated replicas are the inputs of the tracking loops [4]. In our analysis, the signals obtained from the front-end section can be expressed, for the th sample, as…”

Section: Loop Structurementioning

confidence: 99%

High Dynamic Optimized Carrier Loop Improvement for Tracking Doppler Rates

Fereidountabar

Cardarilli

2015

Journal of Electrical and Computer Engineering

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“…Without noise, (8) can be shown to be equivalent to (9). Then, the estimated frequency error is a sine function of twice the difference of phase errors.…”

Section: B Decision Directed Cross Product Discriminatormentioning

confidence: 99%

Performance study of FLL schemes for a successful acquisition-to-tracking transition

Foucras

Ekambi

Ngayap

et al. 2014

2014 IEEE/ION Position, Location and Navigation Symposium - PLANS 2014

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Abstract-This article focuses on the analysis of several FLL schemes for different GNSS signals in order to success the acquisition-to-tracking transition at low received C/N 0 . In a first part, a discussion on different FLL discriminators is lead by comparing frequency error response, linear region, data bit transition insensitivity... Then, based on Monte-Carlo simulations, for each signal, the choices of FLL scheme parameters as the discriminator, loop bandwidth, correlator outputs combination technique are studied in order to highlight the FFL schemes which provide the best performance in terms of probability to get locked.

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“…Nevertheless they are closely related to FLL described in this article because of the similarity of some hardware parts used in their realizations. The articles [6][7][8][9][10][11][12][13][14] represent in the field of FLL and PLL the wider base of literature. The books [15][16][17][18][19] are used for electronics implementation and as mathematical and theoretical base in the development and analyses.…”

Section: Introductionmentioning

confidence: 99%