A new class of flat-top windows for exposure assessment in magnetic field measurements
DOI
https://doi.org/10.1016/j.sigpro.2007.02.012
Document Type
Article
Publication Date
9-1-2007
Publication Title
Signal Processing
Abstract
Efficient signal processing techniques are necessary for assessing the exposure to broadband magnetic fields. The use of flat-top windows along with the DFT is a simple and fast method that reduces the characteristic leakage errors and picket fence effects when using the classical DFT for the exposure assessment. This paper proposes a new class of flat-top windows, making a trade-off between the sidelobe fall-off and the maximum sidelobe height, called fast-decaying minimum-sidelobe (FDMS) flat-top windows. Moreover, the procedure used to find the coefficients of the optimal flat-top windows is reviewed, and a new procedure is proposed in order to find the flat-top window coefficients that uses multi-objective optimization and an appropriate selection of constraints. Using this procedure, a new minimum sidelobe (MS) flat-top window with four terms is also found, having better characteristics than a previously proposed 4-term MS flat-top window. In addition, a new MS flat-top window with five terms is proposed having a maximum sidelobe level of - 95.15 dB. These windows are used to propose a method for assessing the exposure to broadband magnetic fields using flat-top windows and the DFT. © 2007 Elsevier B.V. All rights reserved.
Volume
87
Issue
9
First Page
2151
Last Page
2164
ISSN
01651684
Recommended Citation
Cortés, C. A.; Mombello, E.; Dib, R.; and Rattá, G., "A new class of flat-top windows for exposure assessment in magnetic field measurements" (2007). Scopus Unisalle. 704.
https://ciencia.lasalle.edu.co/scopus_unisalle/704
Identifier
SCOPUS_ID:34247607713