NDLI: Processing GPS L2C signals under ionospheric scintillations

Content Provider	IEEE Xplore Digital Library
Author	Yanhong Kou Xingyun Zhou Yu Morton Lei Zhang
Copyright Year	2010
Description	Author affiliation: Beihang University, China (Yanhong Kou; Xingyun Zhou) \|\| Beijing Institute of Technology/Miami University, China (Lei Zhang) \|\| Miami University, USA (Yu Morton)
Abstract	The objective of this study is to develop a software receiver to effectively process L2C GPS signals under ionosphere scintillations. Several L2C signal processing algorithms are implemented in a VC++ software receiver with efficient CM signal acquisition, rapid transferring from acquisition to tracking, and robust CL signal tracking. These algorithms are validated using live GPS signals and simulated RF signals. A conventional PLL and a Kalman Filter based PLL (KFPLL) tracking algorithm are implemented and their performances are evaluated using simulated digital IF signals under strong scintillation conditions. Our results show that the receiver estimated S4 index serves as a good indicator of scintillation intensity level even with frequent cycle slips during deep amplitude fading. Appropriate characterization of signal intensity spectrum is only possible with relatively high signal C/N0. The carrier phase scintillation is analyzed in terms of steady state tracking errors, cycle slips, standard deviation of detrended phase errors, as well as detrended carrier phase spectral analysis. Compared to the conventional PLL, the KFPLL has a slower but steadier transient response due to its incorporation of a priori information. Our test results show that the tracking threshold of our L2C software receiver reaches 22dB-Hz in the presence of moderate-level ionosphere scintillations.
Starting Page	771
Ending Page	782
File Size	3258960
Page Count	12
File Format	PDF
ISBN	9781424450367
ISSN	21533598
DOI	10.1109/PLANS.2010.5507264
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-05-04
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Global Positioning System Signal processing Signal processing algorithms Phase locked loops Ionosphere Computer errors Robustness RF signals Performance evaluation Amplitude estimation
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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