FFT-based Fast-Response Quasi-Open Tracking Loop for GPS Receiver

DOI

10.2991/icmmita-15.2015.300How to use a DOI?

Keywords

GPS Receiver; FFT; Matched Filter; CZT

Abstract

This article discusses a new GNSS signal tracking architecture with a quasi-open tracking loop. Matched filtering is adopted for PRN code phase discrimination and FFT is used for frequency discrimination, which greatly shortens the duration of the pull-in step after acquisition. There is no loop filter any more. The discrimination results are fed back to code NCO and carrier NCO directly to modify the local signal in the next round. A Chirp-Z Transform (CZT) algorithm is considered for further improving the frequency resolution of FFT, which can also be computed using FFT. All the modules in this architecture are realized on hardware platform, showing characteristic advantages compared to traditional software tracking loop.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Yanpin He
AU  - Weimin Li
AU  - Bo Bi
PY  - 2015/11
DA  - 2015/11
TI  - FFT-based Fast-Response Quasi-Open Tracking Loop for GPS Receiver
BT  - Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications
PB  - Atlantis Press
SP  - 1624
EP  - 1629
SN  - 2352-538X
UR  - https://doi.org/10.2991/icmmita-15.2015.300
DO  - 10.2991/icmmita-15.2015.300
ID  - He2015/11
ER  -