A Hybrid SAR - Model Based Method for High Resolution Imaging

被引:0
|
作者
Gonzalez-Valdes, Borja [1 ]
Martinez-Lorenzo, Jose Angel [1 ]
Rappaport, Carey M. [1 ]
Alvarez Lopez, Yuri [2 ]
Las-Heras Andres, Fernando [2 ]
机构
[1] Northeastern Univ, ALERT, Gordon CenSSIS, Boston, MA 02115 USA
[2] Univ Oviedo, Dept Ingn Elect, Area Teoria Senal Comunicac, Gijon, Asturias, Spain
关键词
RADAR;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper describes a novel fast, two-dimensional method to find the shape of a body from its scattered electric field. The method combines the information extracted from the target using the SAR formulation with a fast model-based inversion in three steps: (1) The SAR image is formed, recovering an initial estimate of the body shape; (2) The phase and amplitude of the SAR image are used to extract a set of first guess contours close to the actual position of the body under test; and (3) these contours are used as a starting point for a model-based inversion, disregarding those that do not match the body profile, and refining the others. Measurement-based results prove that the method is able to achieve resolution of less than half of a wavelength.
引用
收藏
页码:653 / 654
页数:2
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