Reconstruction of physiological signatures from synthetic biomedical ultra-wideband signals

To understand the reflection signals generated by probing the human thorax with an ultra-wideband radar, an analytical model is derived. This model considers ideal antennas and propagation in a closely approximated stratified arrangement of the thorax. It also accounts for the dispersive behavior of the dielectric properties of the different biological tissues. To model physiological processes intra-thoracic layer variations mimicking myocardial deformation and respiration are mimicked. The reconstruction of these displacements are compared with reference signals for the ideal case. By incorporation of measured antenna transfer functions an approximation towards real conditions was investigated.