Acknowledgements

I wish to thank my academic tutor Prof. Franco Chiaraluce and PhD. Marco Baldi for having helped and guided me with patience and devotion during my PhD studies. They have shown to me that being perseverant in what you think and believe can bring only good results in the research work and not only this but satisfaction as well when you see realized what you have projected beforehand. It am glad to have been part of their research team at Università Politecnica delle Marche without forgetting here the students that were part as well of this team: Vincenzo La Mantia, Matteo Moretti, Francesco Venieri, Mattias Mengoni, Filippo Appignani. I have enjoyed this period of my life growing up in experience and getting fond of their way of working together to reach the only scope, that is to succeed with the project where we all took part. A special thinking goes to my friends who was part of my social life in the university and who always tried to teach me more about the their traditions and every day speaking language: Michele Alessandrini, Marco Bianchi, Massimo Mercuri, Giovanni Pelliccioni, Giorgio Biagetti, Alessandro Curzi. I want to say thank you to my sister Elma, she always believed in me and tried to comfort me in the worst moments of my life. I will not also forget to say a great and heartily thank you to the rest of my family, they are always the most important persons in my life. ii This work purpose is the building of an algorithm that estimate the vital parameters from the received signal of an UWB antenna. The research was part of a large project found by the Italian Space Agency, where are included different research groups from different universities in Italy beside the group at Università Politecnica delle Marche. The algorithm was thought to measure the vital parameters of the astronauts before, during and after their mission. The project was entitled NIMURRA (Non Invasiv