Xu, L. and Yan, Y. (2004) Wavelet-Based Removal of Sinusoidal Interference from a Signal. Measurement Science and Technology, 15 (9). pp. 1779-1786. ISSN 0957-0233.
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This paper presents a wavelet-based filtering approach to the recovery of a signal contaminated with sinusoidal interference of a single frequency component or its harmonics. A key step in the approach is to threshold the detail coefficients of the signal by using a level-dependent threshold. Unlike the use of notch and comb-shaped filters, the new approach does not result in notable attenuation to the signal at interference frequencies and is especially suited for the removal of sinusoidal interference that is located within the signal spectrum. Evaluation of the approach has been conducted using a simulated piecewise smooth signal and a real, rapidly changing pressure signal. Results obtained from the studies demonstrate that both the sinusoidal interference and the white noise in the signal can be removed effectively without excessive attenuation to the signal at the interference frequencies.
|Subjects:||T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics (see also: telecommunications)|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts > Instrumentation, Control and Embedded Systems|
|Depositing User:||Yiqing Liang|
|Date Deposited:||03 Oct 2008 14:51|
|Last Modified:||14 Jan 2010 14:32|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/8708 (The current URI for this page, for reference purposes)|
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