Title
Human Being Detection from UWB NLOS Signals: Accuracy and Generality of Advanced Machine Learning Models
Abstract
This paper studies the problem of detecting human beings in non-line-of-sight (NLOS) conditions using an ultra-wideband radar. We perform an extensive measurement campaign in realistic environments, considering different body orientations, the obstacles' materials, and radar-obstacle distances. We examine two main scenarios according to the radar position: (i) placed on top of a mobile cart; (ii) handheld at different heights. We empirically analyze and compare several input representations and machine learning (ML) methods-supervised and unsupervised, symbolic and non-symbolic-according to both their accuracy in detecting NLOS human beings and their adaptability to unseen cases. Our study proves the effectiveness and flexibility of modern ML techniques, avoiding environment-specific configurations and benefiting from knowledge transference. Unlike traditional TLC approaches, ML allows for generalization, overcoming limits due to unknown or only partially known observation models and insufficient labeled data, which usually occur in emergencies or in the presence of time/cost constraints.
Year
DOI
Venue
2022
10.3390/s22041656
SENSORS
Keywords
DocType
Volume
ultra-wideband (UWB), non-line-of-sight (NLOS), machine learning, transfer learning, human detection
Journal
22
Issue
ISSN
Citations 
4
1424-8220
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Gianluca Moro122926.83
Federico Di Luca200.34
Davide Dardari31557116.18
Giacomo Frisoni402.03