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Three-Dimensional Micro-Motion Feature Extraction of the Vibrating Target Based on Multi-Channel Radar in the Terahertz Band

机译:太赫兹频带中基于多通道雷达的振动目标三维微动特征提取

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摘要

Vibration induces a micro-Doppler effect, which contains crucial motion information and features of the micro-motion target. However, the traditional radar can only acquire micro-motion information in the radial direction. The multi-channel radar is capable of acquiring actual micro-motion information in a three-dimensional space, including amplitude, frequency, and three-dimensional direction of vibration. Moreover, the high-accuracy parameter estimation can be achieved in the terahertz band. In this paper, a method for three-dimensional micro-motion feature exaction and parameter estimation is proposed, including a phase-derived-range algorithm, interference, and auto-correlation. Meanwhile, to prove feasibility of the method, the results of simulations and experiment based on a 0.22 THz multi-channel radar system are presented after theoretical analyses.
机译:振动会引起微多普勒效应,其中包含关键的运动信息和微运动目标的特征。但是,传统雷达只能获取径向的微动信息。多通道雷达能够在三维空间中获取实际的微动信息,包括振幅,频率和三维振动方向。此外,可以在太赫兹频带中实现高精度参数估计。本文提出了一种三维微运动特征提取和参数估计的方法,包括相位推导范围算法,干扰和自相关。同时,为证明该方法的可行性,在理论分析的基础上,给出了基于0.22 THz多通道雷达系统的仿真和实验结果。

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