A Study on Adaptively Adjusting Phases Accumulative Number for Remote Heart-Rate Sensing with mm-wave Multi-Chirp FMCW Radar

IF 0.3 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

IEICE Communications Express Pub Date : 2024-03-09 DOI:10.23919/comex.2024XBL0061

Tatsunori Saito;Yaokun Hu;Takeshi Toda

引用次数: 0

Abstract

We proposed a phase accumulation to improve the SNR and accuracy on remote heartrate measurement based on multiple chirps mm-wave FMCW radar. However, specification of radar module has continued to be upgraded and it has become clear that increasing number of the accumulative phases may actually worsen the heartrate estimation accuracy, depending on subject and time of experiment. Therefore, this article proposes adaptive adjusting accumulative number of phases, for remote heartrate measurement based on mm-wave multiple chirps FMCW radar. The method adaptively adjusts accumulative number of phases of the received multiple chirps in each observation window according to a SNR criterion. Experimental result shows effect of the proposed method compared with single chirp and 32-phase accumulated cases, for eight subjects.

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利用毫米波多啁啾 FMCW 雷达自适应调整相位累积数以实现远程心率传感的研究

我们提出了一种相位累加方法，以提高基于多啁啾毫米波 FMCW 雷达的远程心率测量的信噪比和精度。然而，随着雷达模块规格的不断升级，我们发现增加累积相位的数量实际上可能会降低心率估计的准确性，这取决于实验对象和实验时间。因此，本文提出了自适应调整累积相数的方法，用于基于毫米波多啁啾 FMCW 雷达的远程心率测量。该方法根据信噪比标准自适应地调整每个观测窗口中接收到的多个啁啾的累积相位数。实验结果表明，与单啁啾和 32 相累积的情况相比，在 8 个受试者中，所提议的方法效果显著。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEICE Communications Express ENGINEERING, ELECTRICAL & ELECTRONIC-

自引率

33.30%

发文量

114