论文标题
ka波段微波炉的对峙壁感觉
Standoff Through-the-Wall Sensing at Ka-Band Microwave
论文作者
论文摘要
通常以低于3 GHz的频率执行的传统微波遥感/成像，以低于3 GHz的频率进行空间分辨率。在本文中，我们评估了高频微波炉或毫米波僵化对壁壁物体的能力和灵敏度，以实现高空间分辨率。所研究的目标是一个三明治结构，该结构由位于两个壁块之间的不同物体材料组成。 Agilent PNA-X系列（N5245A模型）矢量网络分析仪用于扫描整个KA波段（26.5 GHz至40 GHz）。然后将光束定向到标准的矩形角天线，并通过6英寸直径高斯镜头直接朝三明治结构（壁块/对象/壁块）进行准确。反射的电磁波由与复合物S参数S11相同的系统拾取。反射信号的振幅和相位都用于识别夹在水泥块之间的不同材料。将实验结果与理论计算进行了比较，这些计算显示了在本工作中评估的案例中令人满意的一致性。
Conventional microwave remote sensing/imaging of through-the-wall objects made of different materials is usually performed at frequencies below 3 GHz that provide relatively low spatial resolution. In this paper, we evaluate the ability and sensitivity of high-frequency microwave or millimeter wave standoff sensing of through-the-wall objects to achieve high spatial resolution. The target under study is a sandwich structure consisting of different object materials placed between two wall blocks. An Agilent PNA-X series (model N5245A) vector network analyzer is used to sweep over the entire Ka-band (26.5 GHz to 40 GHz). The beam is then directed to a standard rectangular horn antenna and collimated by a 6-inch-diameter Gaussian lens towards the sandwich structure (wall block/object/wall block). The reflected electromagnetic wave is picked up by the same system as the complex S-parameter S11. Both amplitude and phase of the reflected signal are used to recognize different materials sandwiched between the cement blocks. The experimental results are compared with the theoretical calculations, which show satisfactory agreement for the cases evaluated in this work.
