An Improved CA-CFAR Method for Ship Target Detection in Strong Clutter Using UHF Radar

被引：43

作者：

Kuang, Chunming ^{[1
]}

Wang, Caijun ^{[1
]}

Wen, Biyang ^{[1
]}

Hou, Yidong ^{[1
]}

Lai, Yeping ^{[1
]}

机构：

[1] Wuhan Univ, Elect Informat Sch, Radar & Signal Proc Lab RSPL, Wuhan 430072, Peoples R China

来源：

IEEE SIGNAL PROCESSING LETTERS | 2020年 / 27卷

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Clutter; Rivers; Marine vehicles; Doppler effect; Doppler radar; Radar cross-sections; Extended target; improved CA-CFAR method; R-D spectrum; strong clutter; target detection; UHF radar; PERFORMANCE;

D O I：

10.1109/LSP.2020.3015682

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：

In this letter, the application of ultra-high frequency (UHF) radar for ship target detection over river is investigated for the first time. Due to the wide beam width of antenna, the ship detection of the UHF radar suffers from the broaden river clutters scattering from water waves. In addition, due to the high resolution, the ship echoes are seriously extended in both range and Doppler dimensions, which is different from the traditional point target signal. Extended target detection in strong river clutter is applied in this letter. Conventional constant false alarm rate (CFAR) detector is limited in this situation, which is applicable to the point target detection in clutter free background. An improved cell-averaging (CA)-CFAR method is proposed based on a joint estimation of threshold in range, Doppler and time serials of range-Doppler (R-D) spectra. Based on the time stationarity of clutter, this three-dimensional (3D) CA-CFAR combines several R-D spectra collected in continuous time to estimate the clutter threshold. The effectiveness of this improved method is validated using both simulated and field data.

引用

页码：1445 / 1449

页数：5

共 25 条

[1] Generalized Closed-Form Expressions for CFAR Detection in Heterogeneous Environment [J].

Abbadi, Ali ;

Bouhedjeur, Hamza ;

Bellabas, Ahcene ;

Menni, Tarek ;

Soltani, Faouzi .

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2018, 15 (07) :1011-1015

[2] CA-CFAR Detection Performance in Homogeneous Weibull Clutter [J].

Almeida Garcia, Fernando Dario ;

Flores Rodriguez, Andrea Carolina ;

Fraidenraich, Gustavo ;

Santos Filho, Jose Candid S. .

IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, 2019, 16 (06) :887-891

[3] CFAR detection of extended and multiple point-like targets without assignment of secondary data [J].

Bandiera, F ;

Orlando, D ;

Ricci, G .

IEEE SIGNAL PROCESSING LETTERS, 2006, 13 (04) :240-243

[4] SHIP DETECTION WITH HIGH-RESOLUTION HF SKYWAVE RADAR [J].

BARNUM, JR .

IEEE JOURNAL OF OCEANIC ENGINEERING, 1986, 11 (02) :196-209

[5] OS-CFAR THEORY FOR MULTIPLE TARGETS AND NONUNIFORM CLUTTER [J].

BLAKE, S .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1988, 24 (06) :785-790

[6] Clutter-map CFAR detection for range-spread targets in non-gaussian clutter .2. Performance assessment [J].

Conte, E ;

diBisceglie, M ;

Lops, M .

IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1997, 33 (02) :444-455

[7] DOPPLER SPECTRUM OF SEA ECHO AT 13.56 MC-S [J].

CROMBIE, DD .

NATURE, 1955, 175 (4459) :681-682

[8]

Dong Y., 2006, Rep. RR -0316

[9]

DZVONKOVSKAYA AL, 2009, EUR J NAVIGATION, V7, P18

[10] Two-Dimensional River Flow Patterns Observed with a Pair of UHF Radar System [J].

Hou, Yidong ;

Wen, Biyang ;

Yang, Yonghuai ;

Yang, Jing ;

Wang, Caijun .

INTERNATIONAL JOURNAL OF ANTENNAS AND PROPAGATION, 2017, 2017 :1-11

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