If estimation of linear FM signals corrupted by multiplicative and additive noise: A time-frequency approach

被引：0

作者：

Barkat, B ^{[1
]}

Boashash, B ^{[1
]}

机构：

[1] Queensland Univ Technol, Signal Proc Res Ctr, Brisbane, Qld 4001, Australia

来源：

2000 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, PROCEEDINGS, VOLS I-VI | 2000年

关键词：

D O I：

暂无

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

This paper presents a time-frequency approach for the estimation of the instantaneous frequency (IF) of a linear frequency modulated (FM) signal affected by multiplicative and additive white Gaussian noise. Contrary to earlier claims, we show that the Wigner-Ville spectrum (WVS) is optimal in the sense of IF localisation for such signals and its peak is proposed as an IF estimator. We derive an analytical expression for the asymptotic variance for this estimator. Simulation results based on Monte-Carlo realisations illustrate and confirm the validity of the theoretical derivations and analysis.

引用

页码：661 / 664

页数：4

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