Dispersive Modes in the Time Domain: Analysis and Time-Frequency Representation

L. Carin; L. B. Felsen; D. Kralj; S. U. Pillai; W. C. Lee

doi:10.1109/75.267683

Dispersive Modes in the Time Domain: Analysis and Time-Frequency Representation

L. Carin, L. B. Felsen, D. Kralj, S. U. Pillai, W. C. Lee

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Four algorithms for time-frequency (TF) distributions are considered for the processing and interpretation of dispersive time-domain (TD) data: The short-time Fourier transform, frequency and time-domain wavelets, and a new ARMA-based representation. The TF resolutions of the various distributions are discussed and compared with reference to results for the scattered fields from a chirped finite grating excited by a pulsed plane wave. The processing in the TF phase space extracts TD phenomenology, in particular the instantaneous dispersion relation—with its associated time-dependent frequencies—descriptive of the local TD Floquet modes on the chirped truncated grating.

Original language	English (US)
Pages (from-to)	23-25
Number of pages	3
Journal	IEEE Microwave and Guided Wave Letters
Volume	4
Issue number	1
DOIs	https://doi.org/10.1109/75.267683
State	Published - Jan 1994

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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abstract = "Four algorithms for time-frequency (TF) distributions are considered for the processing and interpretation of dispersive time-domain (TD) data: The short-time Fourier transform, frequency and time-domain wavelets, and a new ARMA-based representation. The TF resolutions of the various distributions are discussed and compared with reference to results for the scattered fields from a chirped finite grating excited by a pulsed plane wave. The processing in the TF phase space extracts TD phenomenology, in particular the instantaneous dispersion relation—with its associated time-dependent frequencies—descriptive of the local TD Floquet modes on the chirped truncated grating.",

author = "L. Carin and Felsen, {L. B.} and D. Kralj and Pillai, {S. U.} and Lee, {W. C.}",

year = "1994",

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AU - Kralj, D.

AU - Pillai, S. U.

AU - Lee, W. C.

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N2 - Four algorithms for time-frequency (TF) distributions are considered for the processing and interpretation of dispersive time-domain (TD) data: The short-time Fourier transform, frequency and time-domain wavelets, and a new ARMA-based representation. The TF resolutions of the various distributions are discussed and compared with reference to results for the scattered fields from a chirped finite grating excited by a pulsed plane wave. The processing in the TF phase space extracts TD phenomenology, in particular the instantaneous dispersion relation—with its associated time-dependent frequencies—descriptive of the local TD Floquet modes on the chirped truncated grating.

AB - Four algorithms for time-frequency (TF) distributions are considered for the processing and interpretation of dispersive time-domain (TD) data: The short-time Fourier transform, frequency and time-domain wavelets, and a new ARMA-based representation. The TF resolutions of the various distributions are discussed and compared with reference to results for the scattered fields from a chirped finite grating excited by a pulsed plane wave. The processing in the TF phase space extracts TD phenomenology, in particular the instantaneous dispersion relation—with its associated time-dependent frequencies—descriptive of the local TD Floquet modes on the chirped truncated grating.

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Dispersive Modes in the Time Domain: Analysis and Time-Frequency Representation

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