超宽带穿墙雷达成像技术研究

A Study on Ultra Wideband Through-wall Radar Imaging Technology

文中详细介绍了超宽带穿墙雷达试验系统及其数据处理技术。针对试验系统中基于延时-求和波束形成方法的传统超宽带成像算法目标分辨率低、容易产生误判的缺点,引入最小方差无畸变响应波束加权及相关因子加权,优化成像算法,并应用于墙后隐藏目标的检测、成像试验。外场试验表明,应用优化后的成像算法,系统能对未知场景中的目标给予准确定位,目标杂波比改善了9.41 dB。

With the information processing techniques, an UWB-TWR experimental system was introduced. Because of the low pre- cise location of the conventional imaging method based delay-and-sum beamformer, the weight obtained by minimal variance distor- tionless response and coherence factor methods applied to optimize the imaging process. And some experiments were done based on the optimized method. It is concluded from the experiment results that the accurate location of the target could be given and the tar- get-to-clutter ratio was increased by 9.41 dB.