Ionosphere-corrected range estimation in dual frequency global navigation satellite systems receivers

Skournetou, Danai; Lohan, Elena Simona

doi:10.1049/iet-rsn.2010.0037

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…In author's earlier work, it was shown that the ability of dual-frequency methods to remove the first-order ionospheric delay is significantly affected by the presence of multipath propagation errors [12]. In this paper, we extend our earlier work by studying the performance of dual-frequency methods in more realistic channel environment.…”

Section: Introductionmentioning

confidence: 61%

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Performance analysis of dual-frequency range estimation methods in the presence of ionospheric and multipath propagation effects

Zhang

Skournetou

Lohan

et al. 2012

2012 International Conference on Localization and GNSS

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In the global navigation satellite systems (GNSS), the performance of GNSS is subject to various errors, such as ionosphere delay, receiver noise and multipath. Among all these errors, the ionosphere delay error and multipath error are commonly regarded as the most limiting factors. In theory, a dual-frequency receiver can eliminate the ionospheric effect. However, in reality, the tracking error has effects on the ionospheric delay correction. This effect has not been studied, especially in realistic channel scenarios. In this paper, the authors investigate the effect of tracking error, obtained from Galileo signal Simulink-based simulators with realistic channel models on the range estimation in dual frequency receivers and compare the performance of three dual frequency ionosphere delay correction methods, namely the least square (LS), constrained LS (CLS) and Bruce Force Constraint (BFC). The results showed that the BFC performed the best below a fairly high ionosphere delay error. The LS method was only affected by multipath error, but the effect was small. CLS performance was better than or equal to LS at the expense of increased complexity.

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Section: Introductionmentioning

confidence: 61%

“…In order to reduce the computational complexity of CLS method and retain the advantage of increased accuracy via constrained solution, the authors have previously designed [12].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of dual-frequency range estimation methods in the presence of ionospheric and multipath propagation effects

Zhang

Skournetou

Lohan

et al. 2012

2012 International Conference on Localization and GNSS

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show abstract

“…Firstly, the proposed instruction set extension should support the acceleration of the most available and future GNSS systems, including simultaneous multisystem and multi-frequency tracking [11]. Moreover, its construction should support various hardware implementations and should be platform independent to achieve the claimed universality.…”

Section: Assumptionsmentioning

confidence: 99%

Instruction set extension for software defined radio in mobile GNSS applications

Marcinek

Pleskacz

2013

SPIE Proceedings

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A variety of currently operational GNSS frequencies and rapid development of new navigation satellite systems resulted in the need for interoperability and compatibility. Recent state-of-the-art integrated GNSS front-ends are capable of simultaneous support of multiple navigation systems [1,2]. A unification of the signal processing part is also possible and, what is more, desirable. This paper introduces a proposal for universal instruction set extension (ISE), which is used for accelerating signal processing in SDR (Software Defined Radio) based GNSS applications. The results of this work were implemented and tested on the chip multithreading general purpose processor -AGATE [3], running on the Xilinx Virtex-6 ML605 FPGA evaluation board.

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“…With the availability of multiple GNSS, it is desirable to improve the accuracy of the positioning by adding the capability in the traditional receivers to receive signals from other frequencies or navigation systems. Signals from additional frequencies would also help to reduce the ionosphere error [1][2] [3] and to improve acquisition and tracking performance [4] [5]. Moreover, the frequency diversity will inherently offer better robustness against interference since one signal band may still be used while the other is jammed.…”

Section: Introductionmentioning

confidence: 99%

Analysis of multi-frequency receiver code tracking performance with flexible power-controlled front-end

Zhang

Lohan

2013

Proceedings of the 11th ACM International Symposium on Mobility Management and Wireless Access

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The multi-frequency Global Navigation Satellite Systems (GNSS) receivers will greatly enhance the performance of satellite navigation. However, the capability of receiving signals from multiple frequencies will increase the receiver power consumption. This constitutes a particular challenge in a massmarket receiver that depends on a battery as the power source. To achieve the power reduction, a part of the multi-frequency frontend can be powered down for a fraction of time in a continuous manner, so that the baseband can keep tracking of all the present signals. This method could potentially reduce the average power while still tracking continuously. However, the feasibility of such architecture, the choice of power on/off time duration for each signal, and the impact of this power reduction method on the code tracking performance have not been studied yet. Here, we analyze the effect of power on/off time on an overlay multi-frequency receiver in terms of Signal to Noise Ratio (SNR), Carrier to Noise density Ratio (C/N 0 ), and code tracking error variance. Simulation results are presented for triple-band Galileo signal receivers.

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Ionosphere-corrected range estimation in dual frequency global navigation satellite systems receivers

Cited by 5 publications

References 11 publications

Performance analysis of dual-frequency range estimation methods in the presence of ionospheric and multipath propagation effects

Performance analysis of dual-frequency range estimation methods in the presence of ionospheric and multipath propagation effects

Instruction set extension for software defined radio in mobile GNSS applications

Analysis of multi-frequency receiver code tracking performance with flexible power-controlled front-end

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