The Research of Near-field INISAR Imaging Diagnosis

摘要：

The study of electromagnetic scatter characteristic is significative for reducing the RCS(radar cross section) of radar target and improving the stealth performance of weapon system.For diagnosing the scattering coefficients distribution of radar target exactly,the mechanism of microwave imaging is analyzed In This paper,a novel near-distance high-resolution microwave imaging approach is presented. Rectify the curved wave front according to the structure characteristic of aircraft,the modified spherically back-projecting method is used to reconstruct 2-D imageInnear-field,then the 3-D INISAR image is derived from two ISAR images at different altitudes by using interferometric image processing. The effectiveness of the approach is demonstrated by the imaging experiment of aircraft scale model in microwave anechoic chamber,and it shows that the novel approach has potential significationInengineering.

关键词： INISAR ISAR radar antenna near-field far-field

作者: Liang Hua-qiang He Ming-yi Li Nan-jing Zhang Lin-xi

作者单位: Shaanxi key Laboratory of information acquisition and processing Defense Key Laboratory of UAV Speci Shaanxi key Laboratory of information acquisition and processing Defense Key Laboratory of UAV Special Technology,NWPU,Xian 710072,China

会议类型: 国际会议

会议名称: 2008 International Conference on Microwave and Millimeter Wave Technology(2008国际微波毫米波技术会议)

会议地点: 南京

会议语种:英文

页码: 1773-1775

在线出版日期: 2008-04-21（万方平台首次上网日期，不代表论文的发表时间）