钟摆目标的微多普勒特征分析与提取  

Micro-Doppler Analysis and Extraction of the Pendulum

作　　者：陈广锋[1] 杨渭清[1] 张运良[1] 

机构地区：[1]西安文理学院数学与计算机工程学院,西安710065

出　　处：《西安工业大学学报》2015年第1期29-32,共4页Journal of Xi’an Technological University

基　　金：国家自然科学基金资助项目(11371290);西安市科技计划项目(CXY1352WL25)

摘　　要：针对室内雷达目标的分类和识别问题,建立了室内钟摆目标的微动数学模型和回波模型,分析了室内钟摆运动产生的微多普勒特征.通过仿真钟摆目标的雷达回波,采用平滑伪Winger-Ville时频分析方法,提取了钟摆目标的微多普勒特征.结果表明:室内钟摆运动产生的微多普勒特征是周期为1/2钟摆周期的正弦调制.从仿真回波中提取的微多普勒特征与理论推导一致,验证了模型及理论分析的正确性.The study is about the classification and recognition of indoor targets. The motion dynamics and echo models of the pendulum were built, and its micro-Doppler modulation was quantitatively analyzed. And then, the micro-Doppler modulation induced by the pendulum was extracted from the radar echo by the method of Smoothed pseudo Winger-Ville time-frequency analysis. The experimental results show that the micro Doppler features extracted from the simulation echo which is the sine modulation with 1/2 pendulum period agree well with the theoretical derivation,which verifies that the models and the mathematical derivation are valid.

关 键 词：钟摆 微多普勒特征 时频分析 识别 

分 类 号：TN958[电子电信—信号与信息处理]