SSA-VMD for UWB Radar Sensor Vital Sign Extraction

Abstract

The combination of advanced radar sensor technology and smart grid has broad prospects. It is meaningful to monitor the respiration and heartbeat of grid employees under resting state through radar sensors to ensure that they are in a healthy working state. Ultra-wideband (UWB) radar sensor is suitable for this application because of its strong penetration ability, high range resolution and low average power consumption. However, due to weak heartbeat amplitude and measurement noise, the accurate measurement of the target heart rate is a challenge. In this paper, singular spectrum analysis (SSA) is proposed to reconstruct the eigenvalues of noisy vital signs to eliminate noise peaks around the heartbeat rate; combined with the variational modal decomposition (VMD), the target vital signs can be extracted with high accuracy. The experiment confirmed that the target vital sign information can be extracted with high accuracy from ten subjects at different distances, which can play an important role in short distance human detection and vital sign monitoring.

Controllable synthesis of high-entropy alloys

“…Furthermore, Huang et al demonstrated the nanometer-precision manipulation on phase segregation of polyelemental nanomaterials. 153 The layer growth mechanism at the interface of heterostructures induced by the small lattice mismatch facilitated the unit-cell-level interface engineering, leading to the synthesis of several phase-segregated segments with a unit-cell thickness in one single particle.…”

A Comparative Study of Narrow/Ultra-Wideband Microwave Sensors for the Continuous Monitoring of Vital Signs and Lung Water Level

“…Ultra-wideband (UWB) and NB antennas are increasingly being used for vital sign detection (VSD) due to their ability to operate at low power and their ability to provide accurate and reliable measurements. UWB antennas are capable of transmitting and receiving short pulses of electromagnetic waves that can penetrate through obstacles and reflect off the human body to provide highly precise measurements of vital signs such as heart rate and respiration rate [ 2 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ].…”

Noncontact Sensors for Vital Signs Measurement: A Narrative Review

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