Device-free Sensor-less localization  

Localization of non-cooperative subjects refers to the process of locating subjects who are not intentionally participating in the localization process but still affect the radio spectrum in some way. The subjects may be actively avoiding localization, or they may be passive and not emitting any useful signals; however, a wireless network deployed to locate them may contain elements which actively transmit.

Applications of sensor-less localization.

- Emergency and rescue operations, patient monitoring in medical facilities

- Anti-terrorism or law enforcement

- Localization, tracking and counting people in outdoor/indoor areas of interest (e.g., home and industrial automation applications)

- Measure usage statistics in train/subway stations, buildings and stores (e.g, pedestrian traffic monitoring and modeling)

- Passenger access counting

People: Prof. Savazzi Stefano, Prof. Nicoli Monica Prof. Vittorio Rampa, Prof. Spagnolini Umberto
MSc/BSc Thesis.
Alessandro Gallo (BSc, 2011), Michele Riva (MSc, 2012), Francesca Carminati (MSc, 2012)

Researchers. Marcello Ioppolo (CNR-IEIIT, 2013)



INDOOR Imaging





How it works. Small, low-cost and low-power battery-operated wireless devices are spread over an area of interest creating a dense mesh network. Objects that move within the area modify the received signal strength field, this allows to extract the location of objects within the area and track their movements.


Test-bed. As shown in the following experiments, the system analyzes the fluctuations of received signal strength over the wireless links as a basis for image reconstruction, detection and localization.



Tests ongoing

FIDAS project. CNR Regione Lombardia - Testing Pilot Plant (Institute of Industrial Technologies and Automation - ITIA).