Interpolated DFT for sinα(x) Windows

被引：35

作者：

Duda, Krzysztof ^{[1
]}

Barczentewicz, Szymon ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, Dept Measurement & Elect, PL-30059 Krakow, Poland

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2014年 / 63卷 / 04期

关键词：

Discrete Fourier transform (DFT); frequency and damping estimation; frequency domain measurements; interpolated DFT; signal processing; windowing; FREQUENCY ESTIMATION; ALGORITHMS; ACCURACY;

D O I：

10.1109/TIM.2013.2285795

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper describes interpolated discrete Fourier transform (IpDFT) for parameter estimation of sinusoidal and damped sinusoidal signals analyzed with a sin(alpha)(x) window. For alpha = 0, 2, 4, . . . sin(alpha)(x) windows are Rife-Vincent class I (RVI) windows, for which IpDFT algorithms are known. We present a new IpDFTs for a = 1, 3, 5,.... The bias-variance trade-off of the proposed IpDFT fits between results offered by RVI windows, e. g., for alpha = 1, we get higher noise immunity than Hann (RVI order 1, alpha = 2) window and lower bias than rectangular (RVI order 0, alpha = 0) window.

引用

页码：754 / 760

页数：7

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