Joint time-frequency transform for radar range Doppler imaging

被引：334

作者：

Chen, VC

Qian, S

机构：

[1] USN, Res Lab, Div Radar, Washington, DC 20375 USA

[2] Natl Instruments Corp, DSP Grp, Austin, TX 78730 USA

来源：

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS | 1998年 / 34卷 / 02期

关键词：

D O I：

10.1109/7.670330

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

Conventional radar imaging uses the Fourier transform to retrieve Doppler information. However, due to the complex motion of a target, the Doppler frequency shifts are actually time-varying. By using the Fourier transform, the Doppler spectrum becomes smeared and the image is blurred. Without resorting to sophisticated motion compensation algorithms, the image blurring problem can be resolved with the joint time-frequency transform. High-resolution time-frequency transforms are investigated, and examples of applications to radar imaging of single and multiple targets with complex motion are given.

引用

页码：486 / 499

页数：14

共 17 条

[1] DEVELOPMENTS IN RADAR IMAGING [J].

AUSHERMAN, DA ;

KOZMA, A ;

WALKER, JL ;

JONES, HM ;

POGGIO, EC .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1984, 20 (04) :363-400

[2]

CARRARA WG, 1995, SPOTLIGHT SYNTHETIC, pCH4

[3] RADAR AMBIGUITY FUNCTION, TIME-VARYING MATCHED-FILTER, AND OPTIMUM WAVELET CORRELATOR [J].

CHEN, VC .

OPTICAL ENGINEERING, 1994, 33 (07) :2212-2217

[4]

CHEN VC, 1995, P SOC PHOTO-OPT INS, V2491, P373, DOI 10.1117/12.205404

[5]

CLAASEN TAC, 1980, PHILIPS J RES, V35, P1067

[6]

CLAASEN TACM, 1980, PHILIPS J RES, V35, P217

[7]

CLAASEN TACM, 1980, PHILIPS J RES, V35, P276

[8]

Cohen L, 1995, Prentice Hall signal processing series

[9]

Davenport W.B., 1958, An Introduction to the Theory of Random Signals and Noise, V159

[10] A RESOLUTION COMPARISON OF SEVERAL TIME-FREQUENCY REPRESENTATIONS [J].

JONES, DL ;

PARKS, TW .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 1992, 40 (02) :413-420

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