Micro-Doppler Trajectory Estimation of Pedestrians Using a Continuous-Wave Radar
Micro-Doppler Trajectory Estimation of Pedestrians Using a Continuous-Wave Radar
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DOI：
10.1109/tgrs.2013.2292826
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发表时间：
2014-09-01
影响因子：
8.2
通讯作者：
Tang, Jingtian
中科院分区：
文献类型：
--
作者：
Ding, Yipeng;Tang, Jingtian
人体物体的雷达后向散射由于其灵活的身体关节和复杂的运动模式而受到微多普勒调制，这有助于识别感兴趣的目标并提供有关其运动动力学的有价值信息。提出了一种结合改进的高阶模糊函数和自适应去噪技术提取连续波雷达回波目标微多普勒轨迹的理论方法。通过该方法，即使在时变的低信噪比环境下，也能准确提取和估计不同目标散射部位对应的多个分量及其微多普勒轨迹。最后，通过一系列的仿真来验证所提技术的有效性和性能。
Radar backscattering from human objects is subject to micro-Doppler modulations because of their flexible body articulations and complicated movement patterns, which can help identify the interested targets and provide valuable information about their motion dynamics. In this paper, a novel theoretical method to extract target micro-Doppler trajectories from continuous-wave radar echo is proposed with a united application of a modified high-order ambiguity function and an adaptive denoising technology. Through this method, multiple components corresponding to different target scattering parts and their micro-Doppler trajectories can be accurately extracted and estimated even in a time-varying low signal-to-noise ratio environment. Finally, a series of simulations is conducted to illustrate the validity and performance of the proposed techniques.