Design and Implementation of GNSS Disciplined Clock Based on Unbiased FIR Filter

Qian Liu, Junliang Liu, Jianfeng Wu, Yan Xing, Haili Wang

2018

Abstract

The disciplined clock system aiming at providing frequency signal with excellent frequency stability, which combines the well short-term frequency stability of the oven controlled crystal oscillator(OXCO) with the excellent long-term frequency stability of the one pulse per second (1PPS) output of the global navigation satellite system (GNSS) receiver. Based on the phase locked loop(PLL) structure, a disciplined clock system mainly consisting of 3 parts has been designed, the clockbias information is get from the UBX protocol generating by the Ublox receiver, and the unbiased finite impulse response(FIR) filter having a good performance is used as a loop filter. Some experiments are carried out, and it shows that the Allan variance of frequency stability of disciplined clock has been improved 2 orders and reached to @10000s compared to the OXCO whose frequency stability is @10000s.

Paper Citation

in Harvard Style

Liu Q., Liu J., Wu J., Xing Y. and Wang H. (2018). Design and Implementation of GNSS Disciplined Clock Based on Unbiased FIR Filter.In 3rd International Conference on Electromechanical Control Technology and Transportation - Volume 1: ICECTT, ISBN 978-989-758-312-4, pages 318-322. DOI: 10.5220/0006969903180322

in Bibtex Style

@conference{icectt18,
author={Qian Liu and Junliang Liu and Jianfeng Wu and Yan Xing and Haili Wang},
title={Design and Implementation of GNSS Disciplined Clock Based on Unbiased FIR Filter},
booktitle={3rd International Conference on Electromechanical Control Technology and Transportation - Volume 1: ICECTT,},
year={2018},
pages={318-322},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006969903180322},
isbn={978-989-758-312-4},
}

in EndNote Style

TY - CONF

JO - 3rd International Conference on Electromechanical Control Technology and Transportation - Volume 1: ICECTT,
TI - Design and Implementation of GNSS Disciplined Clock Based on Unbiased FIR Filter
SN - 978-989-758-312-4
AU - Liu Q.
AU - Liu J.
AU - Wu J.
AU - Xing Y.
AU - Wang H.
PY - 2018
SP - 318
EP - 322
DO - 10.5220/0006969903180322