基于全波电磁仿真的ISAR超分辨成像模拟

	基于全波电磁仿真的ISAR超分辨成像模拟
	张云华
刊名	系统仿真学报
	2009
卷号	21 期号:20 页码:6394-6404
关键词	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
ISSN号	1004-731X
其他题名	ISAR Imaging with Super-resolutionBased on Full-wave Electromagnetic Simulation
通讯作者	北京8701信箱
中文摘要	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.
英文摘要	A 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.
学科主题	微波遥感
资助信息	国家863 计划
语种	中文
内容类型	期刊论文
源URL	[http://ir.cssar.ac.cn/handle/122/1935]
专题	国家空间科学中心_微波遥感部
推荐引用方式 GB/T 7714	张云华. 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	张云华.(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	张云华."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.