近场目标三维SAR成像技术

Technology of 3-D Imaging Based on Scanner in Near Field

采用二维扫描架面扫描结合宽带扫频方式实现近场目标三维SAR成像,并对近场目标三维SAR成像原理及处理技术进行了详细研究,该技术能够修正近场成像测量中天线方向图及距离因子等引入的误差,在近场测试区域内获取目标散射中心真实的三维散射强度分布图,仿真和实测成像数据均验证了该方法的正确性和可行性。

A new method of three dimensional synthesis aperture radar（SAR） imaging is proposed,which is realized by combining the scanning methods of the planar scanning and wideband sweeping.The technology can get the real three dimensional scatting-center distribution of targets in near field by correctting the effects of antenna pattern and distance factor in near field measurement,and the results of measuring and simulation of the proposed method match very well which validate the correctness and feasibility of the technology.