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Radar signatures of furniture elements

机译:家具元素的雷达签名

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摘要

Through-the-wall radar (TTWR) systems designed for detecting, locating, and tracking humans are plagued by harsh clutter scenarios caused by the variety and abundance of furniture elements within the antenna???s field of view. This paper investigates the signatures of indoor clutter using radar cross section (RCS) and linear depolarization ratios to implement clutter suppression algorithms. The paper focuses on the analysis of common individual and composite pieces of indoor clutter for TTWR. The characterization of the wideband spectral properties of indoor clutter elements is accomplished using finite-difference time-domain (FDTD) techniques. Using FDTD, the spectral characteristics of clutter elements are obtained over a wide range of frequencies, different polarizations, and aspect angles.We compare and contrast the RCS responses between the different objects for analysis and use in TTWR. RCS results obtained from the simulations are compared to experimental data using a network analyzer and reasonable agreement is obtained. Clutter signatures are also compared to those of humans in order to design appropriate waveforms for maximizing the signal-to-clutter ratio in TTWR systems.
机译:旨在检测,定位和跟踪人类的穿墙雷达(TTWR)系统由于天线视野内家具元件的多样性和丰富性而导致恶劣的杂波场景困扰。本文利用雷达截面(RCS)和线性去极化比研究室内杂波的特征,以实现杂波抑制算法。本文着重分析TTWR室内杂物的常见单个和复合部分。室内杂波元素的宽带频谱特性的表征是使用有限差分时域(FDTD)技术完成的。使用FDTD,可以在很宽的频率,不同的偏振和纵横比范围内获得杂波元素的光谱特性。我们将不同对象之间的RCS响应进行比较和对比,以进行分析和在TTWR中使用。使用网络分析仪将从模拟获得的RCS结果与实验数据进行比较,并获得合理的一致性。还将杂波信号与人类的杂波信号进行比较,以设计适当的波形,以最大化TTWR系统中的信噪比。

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