Nonparametric estimation of instantaneous frequency

被引：32
作者：
Katkovnik, V
机构：
[1] Department of Statistics, University of South Africa (UNISA), Pretoria 0001
来源：
IEEE TRANSACTIONS ON INFORMATION THEORY | 1997年 / 43卷 / 01期
关键词：
Fourier analysis; nonparametric estimation; spectral analysis; time-frequency distribution; time-varying frequency;
D O I：
10.1109/18.567676
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The local polynomial approximation of time-varying phase is used in order to estimate the instantaneous frequency and its derivatives for a complex-valued harmonic signal given by discrete-time observations with a noise, The considered estimators are high-order nonparametric generalizations of the short-time Fourier transform and the Wigner-Ville distribution, The asymptotic variance and bias of the estimates are obtained.
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页码：183 / 189
页数：7
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