From Modeling to Sensing of Micro-Doppler in Radio Communications

• Published in: Remote sensing (Basel, Switzerland) Vol. 14; no. 24; p. 6310
• Main Authors: Morge-Rollet, Louis, Le Jeune, Denis, Le Roy, Frédéric, Canaff, Charles, Gautier, Roland
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.12.2022; MDPI
• Subjects: Antennas; Bandwidths; communication signal cancellation; Computer Science; Doppler effect; Electromagnetism; Engineering Sciences; Exploitation; Hypotheses; micro-Doppler; Networking and Internet Architecture; passive micro-Doppler sensing; Propagation; Radio communications; Receivers & amplifiers; Remote sensing; RF fingerprinting; Signal and Image Processing; signal detection; signal parameter estimation; Signal processing; Transmitters; Vibration; Vibrations; Wireless communications; micro-Doppler; passive micro-Doppler sensing; communication signal cancellation; signal detection; signal parameter estimation; RF fingerprinting
• ISSN: 2072-4292; 2072-4292
• DOI: 10.3390/rs14246310

The Doppler effect in radio systems has been widely explored by the radio communication community. However, these studies have been limited to simple motion such as linear translation. This paper presents a model for the Doppler modulation effect, i.e., the effect of complex movement on the received signal, using a geometrical approach. Particularly, we focused on studying micro-Doppler in radio communications produced by vibrations. Exploiting this phenomenon would allow the performance of passive micro-Doppler effect sensing based on communication. In this paper, we also propose signal processing techniques to detect the presence of the micro-Doppler effect and to estimate its parameters. Then, we present some experiments which highlight the micro-Doppler effect in a radio communication context. Finally, the end of the paper discusses some potential applications that exploit this phenomenon.