Interferometric inverse synthetic aperture ladar target detection method

被引:5
作者
Du, Jianbo [1 ,2 ]
Li, Daojing [1 ]
Ma, Meng [1 ,2 ]
机构
[1] Chinese Acad Sci, Inst Elect, Sci & Technol Microwave Imaging Lab, 19,North Fourth Ring West Rd, Beijing 100190, Peoples R China
[2] Univ Chinese Acad Sci, 19,Yuquan Rd, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
HIGH-RESOLUTION RADAR;
D O I
10.1364/AO.56.007756
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
To improve the target detection performance of inverse synthetic aperture ladar (ISAL) under the situation that there is Doppler bandwidth ambiguity, we consider energy accumulation of echo signals along a range through matched illumination. However, since the target impulse responses change with the target aspect angle, the phase shifts along slow-time between range cells are different, and the output of matched illumination fluctuates along slow-time. To reduce the slow-time fluctuation of matched illumination under additive white Gaussian noise assumption, we have proposed an interferometric ISAL (InISAL) target detection method based on interferometry processing and principal component analysis (PCA) in this paper. After the interferometry processing, the interferometric phase shifts along slow-time of all range cells are approximately the same. Then PCA is introduced to reduce the impact of noise, interference, and cross-terms of interferometry processing. Thus, the slow-time fluctuation of matched illumination can be decreased, and the target detection performance is improved. The proposed method has been validated with both simulated data of InISAL and real data of millimeter-wave interferometric synthetic aperture radar. (C) 2017 Optical Society of America
引用
收藏
页码:7756 / 7765
页数:10
相关论文
共 19 条
[1]   Two-dimensional synthetic aperture imaging in the optical domain [J].
Bashkansky, M ;
Lucke, RL ;
Funk, E ;
Rickard, LJ ;
Reintjes, J .
OPTICS LETTERS, 2002, 27 (22) :1983-1985
[2]  
Bell M. R., 1988, THESIS
[3]  
Cao W., 2011, THESIS
[4]   Radar automatic target recognition using complex high-resolution range profiles [J].
Du, L. ;
Liu, H. ;
Bao, Z. ;
Zhang, J. .
IET RADAR SONAR AND NAVIGATION, 2007, 1 (01) :18-26
[5]  
FARINA A, 1991, MICROWAVE J, V34, P263
[6]  
Gjessing D.T., 1986, TARGET ADAPTIVE MATC
[7]   Research on indoor experimentation of range SAL imaging system [J].
Guo Liang ;
Xing MengDao ;
Zhang Long ;
Tang Yu ;
Bao Zheng .
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES, 2009, 52 (10) :3098-3104
[8]  
[黄巍 Huang Wei], 2005, [现代雷达, Modern Radar], V27, P36
[9]   A HIGH-RESOLUTION RADAR DETECTION STRATEGY [J].
HUGHES, PK .
IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS, 1983, 19 (05) :663-667
[10]  
Li D., 2003, CHIN SYNTH AP RAD C