墙后移动目标的多径多普勒信号

P. Setlur, M. Amin, F. Ahmad
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引用次数: 7

摘要

检测,定位和跟踪移动目标是非常理想的穿墙传感应用。由于室内环境具有丰富的多径反射源,如墙壁、地板和天花板,因此接收信号由直接路径和多个多径到达组成。然而,在某些情况下,当目标穿过大型金属物体(如文件柜等)时,到达目标的直接路径可能会被阻挡。在这种情况下,多路径是唯一可观察到的回波,可以用来探测和保持对移动目标的跟踪。在本文中,我们提供了在封闭城市结构中移动的漫射目标的多径到达距离多普勒分析,这为基于多径利用的穿墙探测和跟踪技术的发展提供了见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multipath Doppler signatures from targets moving behind walls
Detection, localization, and tracking of moving targets are highly desirable in through-the-wall sensing applications. Since the indoor environment is rich in multipath reflective sources, such as walls, floor, and ceiling, the received signal is composed of the direct path and several multipath arrivals. However, on occasions, the direct path to the target may be blocked as the target traverses behind large metallic objects such as file cabinets, etc. In such cases, multipath is the only observable return and can be exploited to detect and maintain tracking of moving targets. In this paper, we provide range-Doppler analysis of multipath arrivals for a diffuse target moving in an enclosed urban structure, which provides insight for the development of through-the-wall detection and tracking techniques based on multipath exploitation.
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