An automated microwave technique for the monitoring of hidden objects for strategic applications has been presented. The proposed approach is quite novel as it implements and integrates the time-domain method in free-space with the indigenously developed automated scanning setup to obtain the dielectric profile of hidden objects in standard sand or behind the concrete structure. The existing imaging methods for concealed media cannot reveal detailed information of objects with restrictions to access the other side of the test media. The overall approach is implemented by measuring the S-parameters of the test region containing the hidden objects in the wide frequency range of 2-10 GHz using the horn-lens antenna and the network analyzer. The S-parameters are transformed into the equivalent time-domain using the standard IFFT algorithm to retrieve the test region's 2D microwave image and the approximate size of concealed objects, which helps in situations such as through-the-wall imaging, and landmine detection.

已经提出了一种用于监视隐藏物体以用于战略应用的自动化微波技术。所提出的方法非常新颖，因为它实施并集成了自由空间中的时域方法与本地开发的自动扫描设置，以获得标准沙子中或混凝土结构后面隐藏物体的介电剖面。现有的隐蔽介质成像方法无法揭示物体的详细信息，限制了进入测试介质的另一侧。总体方法是通过使用喇叭透镜天线和网络分析仪在 2-10 GHz 的宽频率范围内测量包含隐藏物体的测试区域的 S 参数来实现的。