Abstract
There are many applications which require remote and non-invasive measurement of heartbeat of a human being using an ultra-wideband (UWB) radar. Sophisticated models and their analysis need to be referred before the design of a practical radar prototype. In this paper, i) a UWB wave propagation model of human thorax and ii) the power transmission coefficients estimated from the simulations of the model in the range 1-10 GHz using MATLAB are presented. The study reveals that there is a periodic variation of the transmission coefficients in correlation with the instantaneous physical dimensions of an active heart.
Highlights
There are several applications like health monitoring of a patient, criminal investigation, search operations and so on which are based on remote detection of heartbeat of a human being
It has been shown conclusively that the UWB transmission characteristic obtained at selected specific frequencies is an index of the heartbeat rate, leading to the possibility of using the transmission coefficient as a parameter to know the health of heart
Simulation Results: The simulations based on the realization of the mathematical expressions (3)-(10), for the EM power transfer across the interfaces of the multilayered model are carried out and the transmission coefficients are calculated at a specific frequency
Summary
There are several applications like health monitoring of a patient, criminal investigation, search operations and so on which are based on remote detection of heartbeat of a human being. In this connection, use of radars is inevitable as they can provide non-invasive measurements by placing the radar at a distant location away from the subject under investigation. The objective of this work is to investigate for possible detection of human heartbeat from the UWB signal transmission characteristics. It has been shown conclusively that the UWB transmission characteristic obtained at selected specific frequencies is an index of the heartbeat rate, leading to the possibility of using the transmission coefficient as a parameter to know the health of heart
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