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基于全波电磁仿真的ISAR超分辨成像模拟
Alternative TitleISAR Imaging with Super-resolutionBased on Full-wave Electromagnetic Simulation
顾翔; 张云华; 张祥坤; 北京8701信箱
Department国家863计划微波遥感技术实验室
Source Publication系统仿真学报
2009
Volume21Issue:20Pages:6394-6404
ISSN1004-731X
Language中文
Keyword逆合成孔径雷达 时域有限差分法 调制高斯脉冲 music超分辨算法 isar fdtd modulated Gaussian Pulse music Super-resolution Algorithm
Abstract采用FDTD方法对ISAR转台成像模型进行全波电磁建模和仿真.仿真中采用调制高斯脉冲信号源,选取目标宽频带回波数据低、高两段频数据进行成像处理.在成像处理中,分别采用传统FFT算法和MUSIC超分辨算法.成像结果表明,实际目标的成像机理比理想点目标模型复杂很多,而且低、高不同频段的成像结果有较大差别,这一差别在理想点目标模型中是观测不到的.MUSIC算法的计算量虽然比FFT大,但其极高的成像分辨率有助于改善对实际目标的细节成像,并且有助于研究实际目标的成像机理.
Other AbstractA full-wave electromagnetic simulation of ISAR using FDTD was proposed.In simulation, modulated Gaussian pulse signal was used as the transmitting source so as to obtain wide-band echoes.In imaging,the traditional FFT algorithm and MUSIC super-resolution algorithm were used, respectively,and the imaging results show that,the imaging mechanism of the real object is more complex than that gotten from the ideal point target responses, and images obtained from high-band and low-band echoes are quite different, and these differences can not be observed in the ideal point target model. MUSIC algorithm has large amount of calculation, but its high-resolution imaging capability can help to investigate the details of the real target imaging.
Funding Project中国科学院空间科学与应用研究中心
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/1935
Collection微波遥感部
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
顾翔,张云华,张祥坤,等. 基于全波电磁仿真的ISAR超分辨成像模拟[J]. 系统仿真学报,2009,21(20):6394-6404.
APA 顾翔,张云华,张祥坤,&北京8701信箱.(2009).基于全波电磁仿真的ISAR超分辨成像模拟.系统仿真学报,21(20),6394-6404.
MLA 顾翔,et al."基于全波电磁仿真的ISAR超分辨成像模拟".系统仿真学报 21.20(2009):6394-6404.
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