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Extraction of Doppler signature of micro-to-macro rotations/motions using continuous wave radar-assisted measurement system
IET Science, Measurement & Technology ( IF 1.4 ) Pub Date : 2020-08-31 , DOI: 10.1049/iet-smt.2018.5563
Harish C. Kumawat 1 , Arockia Bazil Raj 1
Affiliation  

Mechanical–structural vibration and/or rotational parts of the targets will induce micro-Doppler frequency in addition to the main Doppler components. In the today's military era, detections, measurements and decision making have to be made after the thorough analysis of main and micro-Doppler signatures of the targets to get their full profile particularly for defence applications. In addition, few of the low radar cross-section targets can be detected only by extracting and processing the micro-Doppler signatures corresponding to the rotations of their propellant rotor blades. Therefore, experimental studies to measure the micro-to-macro rotation/motion generated Doppler frequency and performing its associated measurements become significant. The authors built a C-band (5.3 GHz) continuous wave radar and used it to measure the Doppler frequency generated by micro-to-macro rotations/motions. The detection and measurement accuracy of the developed radar is assessed by series of different open-environment experimental case studies: revolution per minute measurement of rotating blades, separation of multiple rotating blades, oscillation per minute measurement of a swinging pendulum, detection of approaching/receding motion and the Doppler signature extraction of walking/jogging/cycling person. All these measurement values are validated against the standard master instrument readings and theoretical calculations. Finally, the limitations of this system and required near-future research works to enhance its performance are listed.

中文翻译:

使用连续波雷达辅助测量系统提取微距至微距旋转/运动的多普勒信号

除了主要的多普勒分量外,目标的机械结构振动和/或旋转部分还将引起微多普勒频率。在当今的军事时代,必须对目标的主要和微多普勒特征进行透彻的分析之后,才能进行检测,测量和决策,以充分了解其特征,尤其是在国防应用中。另外,只有通过提取和处理与其推进器转子叶片的旋转相对应的微多普勒信号,才能探测到很少的低雷达横截面目标。因此,测量微观到宏观旋转/运动产生的多普勒频率并进行相关测量的实验研究变得很重要。作者建立了一个C波段(5。3 GHz)连续波雷达,并用它来测量由微-微旋转/运动产生的多普勒频率。通过一系列不同的开放环境实验案例研究来评估已开发雷达的检测和测量精度:旋转叶片的每分钟测量转数,多个旋转叶片的分离,摆动摆的每分钟测量振动,接近/后退的检测步行/慢跑/骑自行车的人的运动和多普勒签名提取。所有这些测量值均根据标准主仪表读数和理论计算值进行了验证。最后,列出了该系统的局限性以及需要进行近期研究以增强其性能的工作。通过一系列不同的开放环境实验案例研究来评估已开发雷达的检测和测量精度:旋转叶片的每分钟测量转数,多个旋转叶片的分离,摆动摆的每分钟测量振动,接近/后退的检测步行/慢跑/骑自行车的人的运动和多普勒签名提取。所有这些测量值均根据标准主仪表读数和理论计算值进行了验证。最后,列出了该系统的局限性以及需要进行近期研究以增强其性能的工作。通过一系列不同的开放环境实验案例研究来评估已开发雷达的检测和测量精度:旋转叶片的每分钟测量转数,多个旋转叶片的分离,摆动摆的每分钟测量振动,接近/后退的检测步行/慢跑/骑自行车的人的运动和多普勒签名提取。所有这些测量值均根据标准主仪表读数和理论计算值进行了验证。最后,列出了该系统的局限性以及需要进行近期研究以增强其性能的工作。摆动摆的每分钟测量振动,接近/后退运动的检测以及步行/慢跑/骑自行车的人的多普勒信号提取。所有这些测量值均根据标准主仪表读数和理论计算值进行了验证。最后,列出了该系统的局限性以及需要进行近期研究以增强其性能的工作。摆动摆的每分钟测量振动,接近/后退运动的检测以及步行/慢跑/骑自行车的人的多普勒信号提取。所有这些测量值均根据标准主仪表读数和理论计算值进行了验证。最后,列出了该系统的局限性以及需要进行近期研究以增强其性能的工作。
更新日期:2020-09-01
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