There are previous works on detecting the heartbeats of a human body through a wall with UWB impulse radar, but these studies deal with radar signals in the frequency domain, so these methods can only express the dominant frequency component during a particular time interval and cannot provide time domain characteristics. Moreover, the radar signal is processed for extracting the physiological information in various domains such as time domain and frequency domain. This method can be regarded as a process of searching for critical factors that can describe the characteristics of the physiological functions effectively. The signal processing method for extracting biometric information from the radar signal reflected from the human body is dependent on the radar pulse shape. Thus, UWB impulse radar has been considered as a useful tool for measuring biological information. Ultra wideband (UWB) impulse radar has low exposure risk for the human body as well as low power consumption and high compatibility with peripheral equipment. Research has been carried out to utilize the radar technology, which is mainly used in aeronautical navigation and military applications, to acquire physiological information from the human body. The demand for noninvasive and contactless measurement of physiological functions is constantly on the rise, and such technology is useful for monitoring the conditions of hospitalized patients as well as detecting individuals for security, surveillance, and military purposes. The experimental results show that a highly accurate detection of heart rate is possible with this method. ![]() The heart rate is extracted by processing the radar signal in the time domain and then using a principal component analysis of the time series data to indicate the phase variations that are caused by heartbeats. In this paper, a new method for detecting the human heartbeat using ultra wideband (UWB) impulse radar, which has advantages of low power consumption and harmlessness to human body, is proposed. And radar technology can be used for this purpose. ![]() Measuring the physiological functions of the human body in a noncontact manner through walls is useful for healthcare, security, and surveillance.
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