Monitoring vital signs without direct contact improves patient comfort and reduces measurement disturbances. Our research explores a radar-based approach to detect heartbeats without sensors attached to the body. Using a 24 GHz radar system, we developed advanced signal processing methods to ensure accurate detection. The results closely match conventional ECG (electrocardiography) measurements, demonstrating the potential of radar technology for future medical and home-care applications.

This paper presents the implementation of two easy-to-implement methods for radar imaging with a radar system on a linear drive for educational purposes. This method is a so-called synthetic aperture radar (SAR) approach which is commonly used in the space and aeronautical earth observation. In this paper the two methods are compared with each other and drawbacks and advantages are discussed.

This paper evaluates a method for reconstructing the phase and amplitude of superimposed signals with a frequency separation smaller than the DTFT frequency resolution would allow to differentiate.