目标的微波散射成像方法

李亮; 苗俊刚; 江月松; 李志平

目标的微波散射成像方法

北京航空航天大学电子信息工程学院, 北京 100083

详细信息

中图分类号: TN 015; TP 391
计量
- 文章访问数: 3026
- HTML全文浏览量: 92
- PDF下载量: 835
- 被引次数: 0
出版历程
- 收稿日期: 2005-04-18
- 网络出版日期: 2006-04-30

Microwave imaging by scattering

School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 提出了一种适用于隐匿武器探测、打击走私以及公共场合安检的微波成像探测方法.该方法要求雷达在一个二维平面上扫描,即合成一个平面孔径,通过对雷达接收回波数据的合成孔径处理可以提高雷达的成像分辨率以及对目标的探测能力.雷达可以工作在准单站模式下且只需以单色波照射目标,利用接收到的目标的散射回波的相位和幅度信息重构出目标的二维像.提出了一种适用于近场条件下二维图像的重构算法,并对算法做了详细推导,利用该算法对模拟和实测数据进行了处理.结果表明该算法具有良好的空间分辨率和辐射分辨率,以及在不进行三维成像的条件下可以实现距离向目标的探测.
- 微波成像 /
- 近场测量 /
- 电磁散射 /
- 合成孔径
Abstract: A microwave imaging method, which can be applied in detection of concealed weapons and contraband and security in public situations, is presented. In the method, the radar scans on a rectangular plane, i.e. synthesizing a rectangular planar aperture.Synthetic aperture processing for radar data can improve resolutions of the image and the detecting ability of radar. The system can be quasi-monostatic and only a monochromatic microwave is required to illuminate the target to be imaged. Utilizing the phase and amplitude information recorded over a two-dimensional(2-D) aperture can reconstruct a focused 2-D image of the target. A fully 2-D image-reconstruction algorithm, which can be applied in near-field, is developed and deduced. The processing results of simulation and measurement data show that the image-reconstruction algorithm can produce a microwave image with high spatial and radiation resolutions, and has the ability to detect in range without three-dimensional imaging.
- microwave imaging /
- near-field measurement /
- electromagnetic scattering /
- synthetic aperture

HTML全文

参考文献(1)

[1] Soumekh M. A system model and inversion for synthetic aperture radar imaging[J]. IEEE Trans on Image Processing,1992,1(1):64~76 [2] Soumekh M. Bistatic synthetic aperture radar inversion with application in dynamic object imaging[J]. IEEE Trans on Image Processing, 1991,39(9):2044~2055 [3] Joaquim Fortuny. Efficient algorithms for three-dimensional near-field synthetic aperture radar imaging . Germany:Faculty of Electrical Engineering University of Karslruhe,2001 [4] Chew Wengcho著. 非均匀介质中的场与波[M].聂在平,柳清伙译. 北京:电子工业出版社,1992.65~67 Chew Wengchao. Waves and fields in inhomogeneous media[M]. Translated by Nie Zaiping,Liu Qinghuo. Beijing:Publishing House of Electronics Industry,1992.65~67(in Chinese) [5] Soumekh M. Echo imaging using physical and synthesized arrays[J].Opt Eng,1990,29(5):545~554 [6] 雷文太,粟毅,黄仕家.探地雷达近场三维距离偏移成像算法[J].电子与信息学报,2003,25(6):1641~1646 Lei Wentai, Su Yi,Huang Shijia. Ground penetrating radar near field 3-D range migration imaging technique[J].Journal of Electronics and Information Technology,2003,25(6):1641~1646(in Chinese) [7] 保铮,邢孟道,王彤.雷达成像技术[M].北京:电子工业出版社,2005.48~87 Bao Zheng,Xing Mengdao,Wang Tong.Radar imaging technique[M]. Beijing:Publishing House of Electronics Industry,2005.48~87(in Chinese) [8] Brown S C M,Bennett J C. High-resolution microwave polarimetric imaging of small trees[J].IEEE Trans on Geoscience and Remote Sensing,1999,37(1):48~53 [9] Brown S C M,Bennett J C. Reduced bandwidth algorithm for near field imaging of tree targets using synthetic aperture radar[J]. IEE Proceedings-Radar,Sonar and Navigation, 2001,148(5):259~266 [10] Yuji Sakamoto,Katsuhiro Tajiri, Takaya Sawai, \%et al\%. Three-dimensional imaging of objects in accumulated snow using multifrequency holography[J]. IEEE Trans on Geoscience and Remote Sensing, 1998,26(4):430~436 [11] 赵曦文,张守融,王卫延. 对地观测的微波散射成像方法[J].电子与信息学报,2003,25(11):1531~1535 Zhao Xiwen,Zhang Shourong,Wang Weiyan.A new microwave imaging method for earth observation[J]. Journal of Electronics and Information Technology,2003,25(11):1531~1535(in Chinese)

施引文献

资源附件(0)

访问统计