NDLI: Phase/Frequency Tracking in a GNSS Software Receiver

Content Provider	IEEE Xplore Digital Library
Author	Jyh-Ching Juang Yu-Hsuan Chen
Copyright Year	2007
Abstract	In the paper, a software-based technique for the tracking of frequency and phase of Global Navigation Satellite System (GNSS) signals is proposed. It is shown that a software-based receiver with precomputed, zero-phase carrier replicas for phase tracking is subject to phase jump in phase tracking and ambiguity problems in frequency estimation. A phase/frequency tracking architecture is proposed in which the frequency of the incoming signal is estimated based on a lead-lag structure which is similar to a traditional delay locked loop and the phase, after de-rotation, is estimated using a frequency-aiding phase locked loop. The effects of thermal noise and resolution-induced noise are analyzed and verified using simulation. The significance of frequency aiding in enhancing the phase tracking response is also described.
Sponsorship	IEEE Signal Processing Society
Starting Page	651
Ending Page	660
Page Count	10
File Size	866289
File Format	PDF
ISSN	19324553
Volume Number	3
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Satellite navigation systems Frequency estimation Delay estimation Phase estimation Global Positioning System Tracking loops Frequency locked loops Phase locked loops Signal resolution Analytical models software-based receiver Frequency-locked loop GNSS phase-locked loop
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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