二维海面上三维电大尺寸舰船目标电磁散射仿真

葛志闪; 鲜宁; 王津申; 李阳

doi:10.13700/j.bh.1001-5965.2018.0105

二维海面上三维电大尺寸舰船目标电磁散射仿真

doi: 10.13700/j.bh.1001-5965.2018.0105

葛志闪¹,
鲜宁²,
王津申^3, ,,
李阳³

1.
上海机电工程研究所, 上海 201109
2.
北京航空航天大学自动化科学与电气工程学院, 北京 100083
3.
北京航空航天大学宇航学院, 北京 100083

详细信息

作者简介:
葛志闪男, 硕士, 高级工程师。主要研究方向:武器系统总体技术

王津申男, 博士, 高级工程师。主要研究方向:目标特性、目标成像、目标识别技术

通讯作者:
王津申, E-mail:wangjinshen@buaa.edu.cn

中图分类号: V221⁺.3;TB553
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- 被引次数: 0
出版历程
- 收稿日期: 2018-03-01
- 录用日期: 2018-06-08
- 网络出版日期: 2018-11-20

Simulation of electromagnetic scattering from 2D sea surface with 3D electrically large ship target

1.
Shanghai Electromechanical Engineering Institute, Shanghai 201109, China
2.
School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 10008
3.
School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

More Information

Corresponding author: WANG Jinshen, E-mail:wangjinshen@buaa.edu.cn

摘要

摘要:
目标特征的建模、仿真和分析对于合成孔径雷达（SAR）基于图像的自动识别（ATR）系统具有重要的意义。研究了海面舰船目标的电磁散射计算以及雷达成像仿真。基于矩量法及其并行计算方法，对电大尺寸舰船目标及与海面复合的散射特性进行了研究，给出了不同频带、空间方位、极化的散射特性。在频域对回波数据作离散傅里叶逆变换，得到海面舰船目标的一维距离像。运用极坐标格式成像算法得到其二维聚束SAR成像结果，清晰地重构目标的轮廓。
- 散射特性 /
- 电磁仿真 /
- 粗糙海面 /
- 雷达成像 /
- 并行计算
Abstract:
The modeling, simulation and analysis of target features are of great significance for synthetic aperture radar (SAR) image-based automatic recognition (ATR) systems. The electromagnetic scattering calculation and radar imaging simulation of the surface ship target are studied. Based on the method of moment method and its parallel computation, the scattering characteristics of electrically large ship targets and sea surface composites are studied, and the scattering characteristics of different frequency bands, incident and sca-ttering directions and polarizations are given. The inverse Fourier transform of the echo data is performed in the frequency domain to obtain a 1D high resolution range profiles of the ship target. The polar coordinate format imaging algorithm is used to obtain the 2D spotlight SAR imaging results, and the contour of the target is reconstructed clearly.
- scattering characteristics /
- electromagnetic simulation /
- rough sea surface /
- radar imaging /
- parallel computation

HTML全文

图 1 舰船CAD模型

Figure 1. Ship CAD model

下载: 全尺寸图片幻灯片

图 2 海面与舰船的整体剖分图

Figure 2. Meshes of integrated sea surface and ship

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图 3 舰船的RCS方位特性和频率特性曲线

Figure 3. Azimuthal characteristic and frequency characteristic curves of ship RCS

下载: 全尺寸图片幻灯片

图 4 舰船单站全极化RCS (入射波频率为5 GHz)

Figure 4. Monostatic full polarization RCS of ship (incident wave frequency is 5 GHz)

下载: 全尺寸图片幻灯片

图 5 单独海面在二级和四级海情下RCS (入射波频率为1 GHz)

Figure 5. RCS of sea surface along for sea state of two and four (incident wave frequency is 1 GHz)

下载: 全尺寸图片幻灯片

图 6 海面(有/无舰船)在二级和四级海情下RCS (入射波频率为1 GHz)

Figure 6. RCS of sea surface with/without ship for sea state of two and four (incident wave frequency is 1 GHz)

下载: 全尺寸图片幻灯片

图 7 雷达波照射目标/粗糙面

Figure 7. Radar waves illuminating target/rough surface

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图 8 舰船目标的一维距离像

Figure 8. 1D range profile of ship target

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图 9 舰船目标一维距离像历程图

Figure 9. 1D HRRP of ship target with different target aspects

下载: 全尺寸图片幻灯片

图 10 海面舰船二维成像对比

Figure 10. Comparison of 2D imaging of ship on sea surface

下载: 全尺寸图片幻灯片

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