Theoretical description of the measuring method of instantaneous impedance spectra

被引：115
作者：
Darowicki, K [1 ]
机构：
[1] Gdansk Univ Technol, Fac Chem, Dept Anticorros Protect, PL-80952 Gdansk, Poland
来源：
JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2000年 / 486卷 / 02期
关键词：
short-time Fourier transformation; pseudo-white noise; instantaneous impedance spectrum;
D O I：
10.1016/S0022-0728(00)00110-8
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Theoretical principles for determination of instantaneous impedance spectra were formulated. Coupling of the pseudo-white noise and short-time Fourier transformation methods allows determination of impedance spectra changes as the function of time. The theoretical principles of the new measurement method indicate the possibility of conducting impedance investigations of non-stationary processes. The frequency resolution and time selection of the total time-frequency analysis of impedance spectra depend on the choice of the size of the Gaussian window. (C) 2000 Elsevier Science S.A. All rights reserved.
引用
收藏
页码：101 / 105
页数：5
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