GNSS Carrier Tracking Loop with Loop Gain Control Factor

Ding, Jianguo; Luo, Zhibin; Zhao, Lin

doi:10.1109/imccc.2015.312

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…Therefore, some classical analysis methods of the control system can be employed to analyze the AGCF-PLL. According to (8) and (10), the characteristic equation of the second-and thirdorder AGCF-PLL can be found as The PLL tracking error caused by relative dynamics could be written as [14] …”

Section: Time Domain and Frequency Domain Analyses Of Agcf-pllmentioning

confidence: 99%

“…That means that improving receiver noise performance would degrade its dynamic performance. Hence, the confliction between PLL dynamic performance and noise performance necessitates some compromises in PLL design, and many methods have been developed to address this typical issue [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…The performance of this kind of method has not been compared with that of FAB-LL. A mathematical model describing the 2nd-order PLL with a loop gain control factor has been derived in [8]. It has been shown that a loop gain can control loop noise bandwidth and characteristic frequency.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking

Luo

Ding

Zhao

2018

International Journal of Antennas and Propagation

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The global navigation satellite system (GNSS) has been widely used in both military and civil fields. This study focuses on enhancing the carrier tracking ability of the phase-locked loop (PLL) in GNSS receivers for high-dynamic application. The PLL is a very popular and practical approach for tracking the GNSS carrier signal which propagates in the form of electromagnetic wave. However, a PLL with constant coefficient would be suboptimal. Adaptive loop noise bandwidth techniques proposed by previous researches can improve PLL tracking behavior to some extent. This paper presents a novel PLL with an adaptive loop gain control filter (AGCF-PLL) that can provide an alternative. The mathematical model based on second-and third-order PLL was derived. The error characteristics of the AGCF-PLL were also derived and analyzed under different signal conditions, which mainly refers to the different combinations of carrier phase dynamic and signal strength. Based on error characteristic curves, the optimal loop gain control method has been achieved to minimize tracking error. Finally, the completely adaptive loop gain control algorithm was designed. Comparable test results and analysis using the new method, conventional PLL, FLL-assisted PLL, and FAB-LL demonstrate that the AGCF-PLL has stronger adaptability to high target movement dynamic.

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Section: Time Domain and Frequency Domain Analyses Of Agcf-pllmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking

Luo

Ding

Zhao

2018

International Journal of Antennas and Propagation

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Transceiver pseudolite carrier frequency self-alignment closed-loop system

Zhan

Zhang

2019

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Due to instability of a normal pseudolite, it is vital to ensure that the signal transmitted by a pseudolite is stable. In this paper, a carrier frequency self-alignment closed-loop system is designed for enhancing the stability of a transceiver pseudolite. Carrier frequency feedback is used to compensate for interference from external noise, so that it can make the signal more stable. This system is able to be stable via the related root locus and bode diagram analysis. PID compensation is used to enhance transient-state and static-state performances of carrier frequency self-alignment closed-loop system. According to MATLAB Simulink simulation, carrier frequency self-alignment is achievable and it can suppress external noise interference, which makes the signal more stable.

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A bandwidth adaptive pseudo-code tracking loop design for BD/INS integrated navigation

Liu

Wang

2016

2016 2nd International Conference on Control Science and Systems Engineering (ICCSSE)

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GNSS Carrier Tracking Loop with Loop Gain Control Factor

Cited by 4 publications

References 4 publications

Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking

Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking

Transceiver pseudolite carrier frequency self-alignment closed-loop system

A bandwidth adaptive pseudo-code tracking loop design for BD/INS integrated navigation

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