Instantaneous frequency estimation using the crossterm deleted Wigner representation (CDWR)

Author

Kadambe, Shubha ; Orr, Richard S.

Author_Institution

Atlantic Aerosp. Electron. Corp., Greenbelt, MD, USA

fYear

1996

fDate

18-21 Jun 1996

Firstpage

289

Lastpage

292

Abstract

In this paper, an instantaneous frequency (IF) estimator based on the crossterm deleted Wigner representation (CDWR) is described. The performance of this estimator is verified by deriving the mean and the variance of the estimate. It has been demonstrated that the estimator is unbiased minimum variance under certain constraints. The Cramer-Rao lower bound for the two types of signals considered here are also derived. From the experimental results it can be seen that the mean square error of the estimates of the IF of these two types of signals is close to the theoretical bound at signal to noise ratios (SNR) greater than -3 dB

Keywords

Wigner distribution; error statistics; frequency estimation; signal representation; Cramer-Rao lower bound; SNR; crossterm deleted Wigner representation; estimate mean; estimate variance; instantaneous frequency estimation; mean square error; performance; signals; unbiased minimum variance; Aerospace electronics; Frequency estimation; Mean square error methods; Radar signal processing; Signal processing; Signal processing algorithms; Signal resolution; Signal to noise ratio; Sonar; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Time-Frequency and Time-Scale Analysis, 1996., Proceedings of the IEEE-SP International Symposium on

Conference_Location

Paris

Print_ISBN

0-7803-3512-0

Type

conf

DOI

10.1109/TFSA.1996.547470

Filename

547470