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Multiradar Data Fusion for Respiratory Measurement of Multiple People
IEEE Sensors Journal ( IF 4.3 ) Pub Date : 2021-10-04 , DOI: 10.1109/jsen.2021.3117707
Shunsuke Iwata , Takato Koda , Takuya Sakamoto

This study proposes a data fusion method for multiradar systems to enable measurement of the respiration of multiple people located at arbitrary positions. Using the proposed method, the individual respiration rates of multiple people can be measured, even when echoes from some of these people cannot be received by one of the radar systems because of shadowing. In addition, the proposed method does not require information about the positions and orientations of the radar systems used because the method can estimate the layout of these radar systems by identifying multiple human targets that can be measured from different angles using multiple radar systems. When a single target person can be measured using multiple radar systems simultaneously, the proposed method selects an accurate signal from among the multiple signals based on the spectral characteristics. To verify the effectiveness of the proposed method, we performed experiments based on two scenarios with different layouts that involved seven participants and two radar systems. Through these experiments, the proposed method was demonstrated to be capable of measuring the respiration of all seven people by overcoming the shadowing issue. In the two scenarios, the average errors of the proposed method in estimating the respiration rates were 0.33 and 1.24 respirations per minute (rpm), respectively, thus demonstrating accurate and simultaneous respiratory measurements of multiple people using the multiradar system.

中文翻译:

用于多人呼吸测量的多雷达数据融合

这项研究提出了一种多雷达系统的数据融合方法,可以测量位于任意位置的多人的呼吸。使用所提出的方法,可以测量多个人的个人呼吸率,即使其中一些人的回声由于阴影而无法被其中一个雷达系统接收。此外,所提出的方法不需要有关所用雷达系统的位置和方向的信息,因为该方法可以通过识别可以使用多个雷达系统从不同角度测量的多个人体目标来估计这些雷达系统的布局。当可以同时使用多个雷达系统测量单个目标人员时,所提出的方法基于频谱特征从多个信号中选择准确的信号。为了验证所提出方法的有效性,我们基于涉及七个参与者和两个雷达系统的不同布局的两个场景进行了实验。通过这些实验,证明所提出的方法能够通过克服阴影问题来测量所有七个人的呼吸。在这两种情况下,所提出的方法在估计呼吸率方面的平均误差分别为 0.33 和 1.24 次/分钟 (rpm),从而证明了使用多雷达系统对多人进行准确和同步的呼吸测量。我们基于两个不同布局的场景进行了实验,涉及七个参与者和两个雷达系统。通过这些实验,证明所提出的方法能够通过克服阴影问题来测量所有七个人的呼吸。在这两种情况下,所提出的方法在估计呼吸率方面的平均误差分别为 0.33 和 1.24 次/分钟 (rpm),从而证明了使用多雷达系统对多人进行准确和同步的呼吸测量。我们基于两个不同布局的场景进行了实验,涉及七个参与者和两个雷达系统。通过这些实验,证明所提出的方法能够通过克服阴影问题来测量所有七个人的呼吸。在这两种情况下,所提出的方法在估计呼吸率方面的平均误差分别为 0.33 和 1.24 次/分钟 (rpm),从而证明了使用多雷达系统对多人进行准确和同步的呼吸测量。
更新日期:2021-11-16
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