DISPERSIVE MODES IN THE TIME-DOMAIN - ANALYSIS AND TIME-FREQUENCY REPRESENTATION

被引：15

作者：

CARIN, L

FELSEN, LB

KRALJ, D

PILLAI, SU

LEE, WC

机构：

[1] Department of Electrical Engineering, Polytechnic University, Brooklyn, NY

来源：

IEEE MICROWAVE AND GUIDED WAVE LETTERS | 1994年 / 4卷 / 01期

关键词：

Time domain analysis;

D O I：

10.1109/75.267683

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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.

引用

页码：23 / 25

页数：3

共 14 条

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