Feel Your Heartbeat Across Space: Radar-Based Cardiac Activity Monitoring for Healthcare Applications

Monitoring vital signs, particularly heart rate (HR) and cardiac activity, is crucial for assessing overall health and detecting any potential abnormalities or irregularities <xref ref-type="bibr" rid="ref1" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[1]</xref>, <xref ref-type="bibr" rid="ref2" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[2]</xref>, <xref ref-type="bibr" rid="ref3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[3]</xref>. Cardiac activity provides valuable insights into the cardiovascular system’s function, indicating the efficiency of blood circulation and oxygen delivery to the body’s tissues <xref ref-type="bibr" rid="ref4" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[4]</xref>. According to the World Health Organization, cardiovascular diseases are the leading cause of death globally, accounting for an estimated 17.9 million deaths each year, which represents 31% of all global deaths <xref ref-type="bibr" rid="ref5" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">[5]</xref>. These statistics underscore the importance of vigilant heart health monitoring.