Double stage NCO-based carrier tracking loop in GNSS receivers for city environmental applications

Wenfei Guo; Kunlun Yan; Hongping Zhang; Xiaoji Niu; Chuang Shi

doi:10.1109/LCOMM.2014.2350489

Double stage NCO-based carrier tracking loop in GNSS receivers for city environmental applications

Wenfei Guo^*
, Kunlun Yan
, Hongping Zhang
, Xiaoji Niu
, Chuang Shi

^*Corresponding author for this work

Wuhan University

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

A double stage NCO (numerically controlled oscillator)-based tracking loop with a new frequency discriminator is proposed to track the carrier frequency of the GNSS signal in signal degraded environments. The structure can be easily implemented and modified with conventional GNSS receivers, and the new frequency discriminator has absolute linearity in a wide pull in range. The principle and performance of the method are described and analyzed in detail. Simulation and field test with a software receiver show that this method can effectively track a weak signal compared with other presented methods in an open loop.

Original language	English
Article number	2350489
Pages (from-to)	1747-1750
Number of pages	4
Journal	IEEE Communications Letters
Volume	18
Issue number	10
DOIs	https://doi.org/10.1109/LCOMM.2014.2350489
State	Published - 1 Oct 2014
Externally published	Yes

Keywords

Frequency estimation
GNSS receiver
Open loop tracking
Sinc function

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10.1109/LCOMM.2014.2350489

Cite this

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title = "Double stage NCO-based carrier tracking loop in GNSS receivers for city environmental applications",

abstract = "A double stage NCO (numerically controlled oscillator)-based tracking loop with a new frequency discriminator is proposed to track the carrier frequency of the GNSS signal in signal degraded environments. The structure can be easily implemented and modified with conventional GNSS receivers, and the new frequency discriminator has absolute linearity in a wide pull in range. The principle and performance of the method are described and analyzed in detail. Simulation and field test with a software receiver show that this method can effectively track a weak signal compared with other presented methods in an open loop.",

keywords = "Frequency estimation, GNSS receiver, Open loop tracking, Sinc function",

author = "Wenfei Guo and Kunlun Yan and Hongping Zhang and Xiaoji Niu and Chuang Shi",

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AU - Guo, Wenfei

AU - Yan, Kunlun

AU - Zhang, Hongping

AU - Niu, Xiaoji

AU - Shi, Chuang

PY - 2014/10/1

Y1 - 2014/10/1

N2 - A double stage NCO (numerically controlled oscillator)-based tracking loop with a new frequency discriminator is proposed to track the carrier frequency of the GNSS signal in signal degraded environments. The structure can be easily implemented and modified with conventional GNSS receivers, and the new frequency discriminator has absolute linearity in a wide pull in range. The principle and performance of the method are described and analyzed in detail. Simulation and field test with a software receiver show that this method can effectively track a weak signal compared with other presented methods in an open loop.

AB - A double stage NCO (numerically controlled oscillator)-based tracking loop with a new frequency discriminator is proposed to track the carrier frequency of the GNSS signal in signal degraded environments. The structure can be easily implemented and modified with conventional GNSS receivers, and the new frequency discriminator has absolute linearity in a wide pull in range. The principle and performance of the method are described and analyzed in detail. Simulation and field test with a software receiver show that this method can effectively track a weak signal compared with other presented methods in an open loop.

KW - Frequency estimation

KW - GNSS receiver

KW - Open loop tracking

KW - Sinc function

UR - https://www.scopus.com/pages/publications/84907966164

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JO - IEEE Communications Letters

JF - IEEE Communications Letters

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M1 - 2350489

ER -

Double stage NCO-based carrier tracking loop in GNSS receivers for city environmental applications

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Keywords

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