Along-Track Velocity Estimation for SAR Moving Target in Complex Image Domain

被引：0

作者：

Huang, Zu-Zhen ^{[1
]}

Xu, Jia ^{[1
]}

Wang, Zhi-Rui ^{[2
]}

Xia, Xiang-Gen ^{[3
,4
]}

Long, Teng ^{[1
]}

Bian, Ming-Ming ^{[5
]}

机构：

[1] Beijing Inst Technol, Sch Informat & Elect, Beijing, Peoples R China

[2] Tsinghua Univ, Dept Elect Engn, Beijing, Peoples R China

[3] Shen Zhen Univ, Shenzhen, Peoples R China

[4] Univ Delaware, Dept ECE, Newark, DE USA

[5] China Acad Space Technol, Beijing, Peoples R China

来源：

2016 CIE INTERNATIONAL CONFERENCE ON RADAR (RADAR) | 2016年

基金：

中国博士后科学基金; 美国国家科学基金会;

关键词：

Synthetic aperture radar (SAR); ground moving target indication (GMTI); along-track velocity; fractional Fourier transform (FrFT); FRACTIONAL FOURIER-TRANSFORM; SYNTHETIC-APERTURE RADAR; ESTIMATION ALGORITHM; ANTENNA; INTERFEROMETRY; SIGNALS;

D O I：

暂无

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：

A new along-track velocity estimation method is proposed for synthetic aperture radar (SAR) ground moving target in the complex image domain. For a target with relatively large along-track velocity, its complex response is a linear frequency-modulated (LFM) signal in the image domain. Its Doppler rate is mainly determined by the along-track velocity, while the effect of the cross-track velocity can be ignored. In this paper, the along-track velocity of a detected target in the image domain can be estimated based on the Doppler rate retrieval via fractional Fourier transform. The proposed method can be well combined with the SAR-GMTI algorithms in image domain, where the signal to clutter-plus-noise ratio is higher than other domains Finally, some results of numerical experiments are provided to demonstrate the effectiveness of the proposed method.

引用

页数：5

共 15 条

[1] DETECTION AND IMAGING OF MOVING-OBJECTS WITH SYNTHETIC APERTURE RADAR .2. JOINT TIME FREQUENCY-ANALYSIS BY WIGNER-VILLE DISTRIBUTION [J].

BARBAROSSA, S ;

FARINA, A .

IEE PROCEEDINGS-F RADAR AND SIGNAL PROCESSING, 1992, 139 (01) :89-97

[2] A comparison of displaced phase centre antenna and along-track interferometry techniques for RADARSAT-2 ground moving target indication [J].

Chiu, Shen ;

Livingstone, Chuck .

CANADIAN JOURNAL OF REMOTE SENSING, 2005, 31 (01) :37-51

[3] Space-time processing for multichannel synthetic aperture radar [J].

Ender, JHG .

ELECTRONICS & COMMUNICATION ENGINEERING JOURNAL, 1999, 11 (01) :29-38

[4] VSAR: A high resolution radar system for ocean imaging [J].

Friedlander, B ;

Porat, B .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1998, 34 (03) :755-776

[5] A Velocity Estimation Algorithm of Moving Targets using Single Antenna SAR [J].

Li, Gang ;

Xia, Xiang-Gen ;

Xu, Jia ;

Peng, Ying-Ning .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 2009, 45 (03) :1052-1062

[6] Lv's Distribution: Principle, Implementation, Properties, and Performance [J].

Lv, Xiaolei ;

Bi, Guoan ;

Wan, Chunru ;

Xing, Mengdao .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2011, 59 (08) :3576-3591

[7] Velocity estimation of fast moving targets using a single SAR sensor [J].

Marques, PAC ;

Dias, JMB .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 2005, 41 (01) :75-89

[8] Spaceborne along-track SAR interferometry: Performance analysis and mission scenarios [J].

Moccia, A ;

Rufino, G .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 2001, 37 (01) :199-213

[9] Application of the fractional Fourier transform to moving target detection in airborne SAR [J].

Sun, H ;

Liu, GS ;

Gu, H ;

Su, WM .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 2002, 38 (04) :1416-1424

[10] Sampling and sampling rate conversion of band limited signals in the fractional Fourier transform domain [J].

Tao, Ran ;

Deng, Bing ;

Zhang, Wei-Qiang ;

Wang, Yue .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2008, 56 (01) :158-171

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