LeakyTrack: non-coherent single-antenna nodal and environmental mobility tracking with a leaky-wave antenna
LeakyTrack: non-coherent single-antenna nodal and environmental mobility tracking with a leaky-wave antenna
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DOI：
10.1145/3384419.3430717
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
Yasaman Ghasempour;Chia-Yi Yeh;R. Shrestha;Yasith Amarasinghe;D. Mittleman;E. Knightly
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文献类型：
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作者：
Yasaman Ghasempour;Chia-Yi Yeh;R. Shrestha;Yasith Amarasinghe;D. Mittleman;E. Knightly
射频信号具有传达关于节点的运动和周围环境的丰富信息的潜力。不幸的是，提取这样的信息是具有挑战性的，以前需要精确的相位测量，大型天线阵列结构，或广泛的培训。在本文中，我们提出了泄漏跟踪，一种新的系统，使非相干和训练的运动传感与单个天线。其关键思想是在不同的空间方向上创建独特的频谱编码信号，以便接收节点的几何特性以及环境中的任何潜在对象在收集的信号上留下频谱足迹。要做到这一点，我们利用太赫兹漏波天线，并实现了颜色编码的扫描，其中具有不同的频谱特性的信号同时发射整个角域。LeakyTrack通过分析接收到的频谱轮廓来推断节点和环境运动。我们通过广泛的空中实验评估LeakyTrack的性能。
Radio frequency signals have the potential to convey rich information about a node's motion and surroundings. Unfortunately, extracting such information is challenging, previously requiring accurate phase measurement, large antenna array structures, or extensive training. In this paper, we present LeakyTrack, a novel system that enables non-coherent and training-free motion sensing with a single antenna. The key idea is to create unique spectrally coded signals at different spatial directions so that geometric properties of the receiving node, as well as any potential objects in the environment, leave spectral footprints on the collected signal. To do so, we exploit a THz leaky-wave antenna and realize a color-coded scan in which signals with distinct spectral characteristics simultaneously emit across the angular domain. LeakyTrack infers nodal and environmental motion by analyzing the received spectral profile. We evaluate the performance of LeakyTrack via extensive over-the-air experiments.