Experiments with bioradars in an automotive environment

Abstract

In this study three different bioradars were tested inside a vehicle to verify if they are able to measure respiratory rate and heart rate in an automotive environment. Raw data recordings and vital sign measurements were obtained, and after using low-complexity methods to extract the vital sign measurements from the raw data, these were compared to a ground truth. The best performance in respiratory rate measurement was achieved by an Impulse-Response Ultra Wide Band radar, with an average of 7.18 % mean relative error when the vehicle is stationary, and the best performance in heart rate measurement was achieved by a Frequency Modulated Continuous Wave radar, with an average mean relative error of 3.27 % when the vehicle is stationary.