NDLI: A novel theoretical analysis of fault detection for atomic clock

Content Provider	IEEE Xplore Digital Library
Author	Nunzi, E. D'Ippolito, D.
Copyright Year	2009
Description	Author affiliation: Dept. of Electronic and of Information Engineering, University of Perugia, Italy (Nunzi, E.; D'Ippolito, D.)
Abstract	The Generalized Likelihood Ratio Test (GLRT) is a fault detection technique usually employed for revealing faulting behavior by analyzing a finite length sequence of data. This technique is largely employed in many engineering applications and recently its effectiveness has been proved for detecting anomalies also in on-board atomic clocks [1]–[3]. Although the large number of scientific publications allows a simple interpretation of the GLRT outcome, the application of the GLRT to frequency data acquired from atomic clocks still need to be properly customized and metrologically characterized. In particular, by considering Global Navigation Satellite Systems (GNSS), the most effective application where atomic clocks are used, a faulting clock behavior should be recognized fast and efficiently in order to guarantee the system target accuracy. In this paper, a novel theoretical analysis of the GLRT is performed for revealing frequency jumps and variance changes. An application example shows how the presented analysis can be used for deriving practical criteria that simplify the application of the fault detection procedure based on the GLRT to atomic clock frequency data.
Starting Page	85
Ending Page	88
File Size	362990
Page Count	4
File Format	PDF
ISBN	9781424435937
DOI	10.1109/AMUEM.2009.5207592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-07-06
Publisher Place	Romania
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault detection Detectors Frequency Satellite navigation systems Performance analysis Analysis of variance Monitoring Atomic clocks Information analysis Global Positioning System
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
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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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