Multifrequency, Multisatellite Vector Phase-Locked Loop for Robust Carrier Tracking

Henkel, Patrick; Giger, Kaspar; Günther, Christoph

doi:10.1109/jstsp.2009.2025637

Cited by 43 publications

(22 citation statements)

References 7 publications

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“…References [12] and [13] are some of the few works in the open literature dealing with vector loop RAIM. An examination of the RAIM scheme presented in [12] reveals the following limitations.…”

Section: Prior Artmentioning

confidence: 99%

Integrity monitoring with vector GNSS receivers

Bhattacharyya¹,

Gebre-Egziabher

2014

IEEE Trans. Aerosp. Electron. Syst.

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A receiver autonomous integrity monitoring (RAIM) algorithm for vector tracking loop receivers is developed. It is shown that vector RAIM is not a simple remapping of ideas from scalar loop RAIM. Notably, it is shown that pseudorange residuals are not ideal for generating the test statistic in a vector receiver. Also, since vector receivers with integrity monitoring may use a recursive, multirate filter to generate the navigation solution, the associated vector RAIM algorithm has to accommodate multirate estimators. Simulation results are used to show that the designed vector RAIM algorithm provides comparable performance as that of its scalar counterpart.

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Section: Prior Artmentioning

confidence: 99%

Integrity monitoring with vector GNSS receivers

Bhattacharyya¹,

Gebre-Egziabher

2014

IEEE Trans. Aerosp. Electron. Syst.

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“…However LS method is usually based on fixed bandwidth and is not flexible for different user modes. Based on CoOp tracking, multifrequency and multisatellite VPLL (MC-VPLL) method was introduced by Henkel et al [5] to eliminate the local filters for phase tracking for improved robustness. Giger et al [6,7] proposed a MC-VPLL based on Kalman filter which includes many states to estimate.…”

Section: Introductionmentioning

confidence: 99%

Improvement of Carrier Phase Tracking Based on a Joint Vector Architecture

Chen

Gao

2017

International Journal of Aerospace Engineering

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Carrier phase measurements are essential to high precision positioning. Usually, the carrier phase measurements are generated from the phase lock loop in a conventional Global Navigation Satellite System (GNSS) receiver. However there is a dilemma problem to the design of the loop parameters in a conventional tracking loop. To address this problem and improve the carrier phase tracking sensitivity, a carrier phase tracking method based on a joint vector architecture is proposed. The joint vector architecture contains a common loop based on extended Kalman filter to track the common dynamics of the different channels and the individual loops for each channel to track the satellite specific dynamics. The transfer function model of the proposed architecture is derived. The proposed method and the conventional scalar carrier phase tracking are tested with a high quality simulator. The test results indicate that carrier phase measurements of satellites start to show cycle slips using the proposed method when carrier noise ratio is equal to and below 15 dB-Hz instead of 21 dB-Hz with using the conventional phase tracking loop. Since the joint vector based tracking loops jointly process the signals of all available satellites, the potential interchannel influence between different satellites is also investigated.

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“…The methodology of VTL has been applied in tracking carrier phase with measurements from multiple antennas to gain higher accuracy of carrier tracking (Zhodzishsky et al 1998). Based on this concept, with the target to enhance the robustness to ionospheric scintillations, multi-frequency and multi-satellite vector phase lock loop (VPLL) is proposed coupling individual PLLs to enable better estimation for ionospheric and tropospheric errors (Henkel et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Design of an adaptive GPS vector tracking loop with the detection and isolation of contaminated channels

et al. 2016

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In vector tracking loop (VTL), the relativity among received signals is exploited to deeply integrate the entire information within signal processing channels. However, the tracking error in one channel may corrupt other channels and lead to an increasing degradation in the tracking performance. An adaptive GPS vector tracking loop with the detection and isolation of contaminated channels is proposed to suppress the propagation of tracking error and to make the vector-based receiver less vulnerable in poor signal quality environments resulting from signal attenuation, interference and jamming. The vectorial transfer function models and the noise bandwidths of both the vector frequency lock loop and the vector delay lock loop are established to accurately calculate bandwidths and optimally design parameters for VTL is superior to baseline VTL, allowing the accuracy, the availability and the reliability of the vector-based receiver to be improved. In conclusion, the proposed adaptive VTL with the detection and isolation of contaminated channels is a powerful method for applications in GPS-challenged environments.

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Multifrequency, Multisatellite Vector Phase-Locked Loop for Robust Carrier Tracking

Cited by 43 publications

References 7 publications

Integrity monitoring with vector GNSS receivers

Integrity monitoring with vector GNSS receivers

Improvement of Carrier Phase Tracking Based on a Joint Vector Architecture

Design of an adaptive GPS vector tracking loop with the detection and isolation of contaminated channels

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