Application of the reassigned joint time-frequency transform to wideband scattering from waveguide cavities

被引：15

作者：

Ram, Shobha Sundar ^{[1
]}

Ling, Hao ^{[1
]}

机构：

[1] Univ Texas Austin, Dept Elect & Comp Engn, Austin, TX 78731 USA

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2007年 / 6卷 / 580-583期

基金：

美国国家科学基金会;

关键词：

Radar scattering; reassigned joint time-frequency (RJTF) transform; short-time Fourier transform (STFT); waveguide cavities;

D O I：

10.1109/LAWP.2007.911391

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：

The wideband return from a circular waveguide cavity is investigated in the joint time-frequency space using the reassigned joint time-frequency (RJTF) transform. Equations for generating the reassigned joint time-frequency distribution from a frequency domain signal are presented. The performance of the reassigned transform is compared with that of the short-time Fourier transform (STFT) based on data obtained from both simulation and measurement.

引用

页码：580 / 583

页数：4

共 10 条

[1]

[Anonymous], TIME FREQUENCY TRANS

[2] IMPROVING THE READABILITY OF TIME-FREQUENCY AND TIME-SCALE REPRESENTATIONS BY THE REASSIGNMENT METHOD [J].

AUGER, F ;

FLANDRIN, P .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1995, 43 (05) :1068-1089

[3] HIGH-FREQUENCY SCATTERING FROM AN OPEN-ENDED SEMI-INFINITE CYLINDER [J].

CHUANG, CA ;

LIANG, CS ;

LEE, SW .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1975, 23 (06) :770-776

[4] Algorithms for computing the time-corrected instantaneous frequency (reassigned) spectrogram, with applications [J].

Fulop, SA ;

Fitz, K .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 2006, 119 (01) :360-371

[5]

Gardner Jeff, 2003, Clin Lab Sci, V16, P6

[6] WAVELET ANALYSIS OF RADAR ECHO FROM FINITE-SIZE TARGETS [J].

KIM, HD ;

LING, H .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1993, 41 (02) :200-207

[7] ANALYSIS OF TIME-VARYING SIGNALS WITH SMALL BT VALUES [J].

KODERA, K ;

GENDRIN, R ;

VILLEDARY, CD .

IEEE TRANSACTIONS ON ACOUSTICS SPEECH AND SIGNAL PROCESSING, 1978, 26 (01) :64-76

[8]

LING H, 1975, IEEE T ANTENN PROPAG, V23, P770

[9] TIME-FREQUENCY DISTRIBUTION ANALYSIS OF SCATTERING FROM WAVE-GUIDE CAVITIES [J].

MOGHADDAR, A ;

WALTON, EK .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1993, 41 (05) :677-680

[10]

RAM SS, 2007, UNPUB ELECT LETT MAY

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