151. Application of Time-Frequency Domain Reflectometry for Detection and Localization of a Fault on a Coaxial Cable.
- Author
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Yong-June Shin, Powers, Edward J., Tok-Son Choe, Chan-Young Hong, Eun-Seok Song, Jong-Gwan Yook, and Park, Jin Bae
- Subjects
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TELECOMMUNICATION cables , *COAXIAL cables , *ELECTRIC cables , *SIGNAL processing , *SIGNAL theory , *TELECOMMUNICATION systems - Abstract
In this paper, we introduce a new high-resolution reflectometry technique that operates simultaneously in both the time and frequency domains. The approach rests upon time-frequency signal analysis and utilizes a chirp signal multiplied by a Gaussian time envelope. The Gaussian envelope provides time localization, while the chirp allows one to excite the system under test with a swept sinewave covering a frequency band of interest. This latter capability is of particular interest when testing communication cables and systems. Sensitivity in detecting the reflected signal is provided by a time-frequency cross-correlation function. The approach is verified by experimentally locating various types of faults, located at various distances, in RG 142 and RG 400 coaxial cables. [ABSTRACT FROM AUTHOR]
- Published
- 2005
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