| 基于电偶极子辐射模型的三维成像算法 |
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| 引用本文： | 田博,童创明,钟卫军.基于电偶极子辐射模型的三维成像算法[J].核电子学与探测技术,2011,31(9):977-982. |
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| 作者姓名： | 田博 童创明 钟卫军 |
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| 作者单位： | 1. 空军工程大学导弹学院,陕西三原,713800
2. 空军工程大学导弹学院,陕西三原713800;毫米波国家重点实验室,江苏南京210096 |
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| 摘 要： | 提出了一种基于电偶极子辐射模型的三维成像算法.在研究后向投影算法原理的基础上,利用散射模型分析了近、远场成像的关系,提出先采用电偶极子辐射模型对采样数据进行近场化处理,再将处理后的数据反向投影到成像区域,获得成像图像.利用FDTD数值仿真实现对目标的三维成像,验证了算法的有效性,分析了耦合对成像效果的影响.
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| 关 键 词： | 超宽带雷达 后向投影算法 偶极子 时域有限差分法 |
An Three-dimensional Imaging Algorithm Based on the Radiation Model of Electric Dipole |
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| TIAN Bo,TONG CHuang-ming,ZHONG Wei-jun.An Three-dimensional Imaging Algorithm Based on the Radiation Model of Electric Dipole[J].Nuclear Electronics & Detection Technology,2011,31(9):977-982. |
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| Authors: | TIAN Bo TONG CHuang-ming ZHONG Wei-jun |
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| Affiliation: | TIAN Bo1,TONG CHuang-ming1,2,ZHONG Wei-jun1(1.Missile Inst.,Air Force Engineering Univ.,Sanyuan Shanxi 713800,China,2.State Key Lab.of Millimeter Waves,Nanjing 210096,China) |
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| Abstract: | A three-dimensional imaging algorithm based on the radiation model of dipole(DBP) is presented.On the foundation of researching the principle of the back projection(BP) algorithm,the relationship between the near field imaging model and far field imaging model is analyzed based on the scattering model.Firstly,the far field sampling data is transferred to the near field sampling data through applying the radiation theory of dipole.Then the dealt sampling data was projected to the imaging region to obtain the... |
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| Keywords: | ultra wideband(UWB) back projection(BP) algorithm dipole finite-difference time-domain method(FDTD) |
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