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Detection of metallic and nonmetallic concealed targets based on millimeter-wave inverse scattering approach

机译:基于毫米波逆散射法检测金属和非金属隐藏目标

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摘要

A millimeter-wave radar based on active invers scattering approach for two dimensional screening of metallic and nonmetallic concealed targets is presented. The perceived challenges of detecting a nonmetallic target exhibiting poor dynamic range for measurement systems are analyzed and discussed by comparing the performance of three different antenna sensors. A short time duration pulse with frequency sweep covering 27 to 33 GHz band is used to feed the antenna sensors. In our experimental test, we buried a concealed target consists of metallic or dielectric strips under a dielectric layer that simulates the human body model. Waveguide and printed antipodal Vivaldi antennas are considered to study the target detectability and the quality of the measured millimeter-wave images. The use of proposed AVA resulted in a better-quality image with lower noise effect for both metallic and nonmetallic cases.
机译:提出了一种基于主动逆散射方法的毫米波雷达,用于金属和非金属隐藏靶的二维筛选。通过比较三种不同天线传感器的性能,分析并讨论了检测表现出对测量系统的差的动态范围的非金属目标的感知挑战。使用频率扫描覆盖27至33GHz带的短时间持续时间脉冲用于馈送天线传感器。在我们的实验测试中,我们掩盖了隐藏的目标,包括在模拟人体模型的介电层下的金属或介电条。认为波导和印刷的抗双向Vivaldi天线研究了测量毫米波图像的目标可检测性和质量。使用提出的AVA导致更好的图像,具有较低的噪声效果,用于金属和非金属案例。

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