Specifications

Authors: Wen, He1 ; Teng, Zhaosheng1 ; Wang, Yong1 ; Yang, Yuxiang2/;;;杨宇祥
Author affiliation:
1 College of Electrical and Information Engineering, Hunan University, Changsha City 410082,
China
2 School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology,
Xi'an City 710048, China
Source title: IEEE Transactions on Instrumentation and Measurement
Abbreviated source title: IEEE Trans. Instrum. Meas.
Volume: 62
Issue: 9
Issue date: 2013
Publication year: 2013
Pages: 2609-2612
Article number: 6545285
Language: English
ISSN: 00189456
CODEN: IEIMAO
Document type: Journal article (JA)
Publisher: Institute of Electrical and Electronics Engineers Inc., 445 Hoes Lane / P.O. Box
1331, Piscataway, NJ 08855-1331, United States
Abstract: The new window class, which is generated by multiple time-convolution of
optimized trapezoid windows, is presented. It is shown that the trapezoid windows can achieve
different sidelobe and main lobe behaviors by adjusting the lengths of the lower and upper bases
of an isosceles trapezoid. This is to say, in order to obtain the good sidelobe behaviors and
narrow main lobe width, the optimization procedure can be applied by adjusting the normalized
ratio between the lengths of the upper and lower bases of a trapezoid. Thus, a new window class
having both an extremely narrow main lobe width and high sidelobe behavior is generated with
the optimized trapezoid windows being the parent windows. The estimators of the frequency,
amplitude, and phase for harmonic analysis is provided by using the classical interpolation fast
Fourier transform algorithm based on the proposed windows. The efficiency of new windows in
high-accuracy harmonic analysis is demonstrated through computer simulations. © 1963-2012
IEEE.
Number of references: 11
Main heading: Harmonic analysis
Controlled terms: Computer simulation - Convolution - Discrete Fourier
transforms - Frequency estimation - Optimization - Signal processing - Windows
Uncontrolled terms: Convolution windows - Fast Fourier transform
algorithm - High-accuracy - Isosceles trapezoid - Main lobes - Optimization
procedures - Side lobes - Spectral leakage
Classification code: 402 Buildings and Towers - 716.1 Information Theory and Signal
Processing - 723.5 Computer Applications - 921 Mathematics
DOI: 10.1109/TIM.2013.2255990
Database: Compendex
Compilation and indexing terms, © 2013 Elsevier Inc.