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Open AccessArticle

A Multi-Static Radar Network with Ultra-Wideband Radio-Equipped Devices

Institute for Dynamic Systems and Control, ETH Zurich, 8092 Zurich, Switzerland
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Author to whom correspondence should be addressed.
Sensors 2020, 20(6), 1599; https://doi.org/10.3390/s20061599
Received: 7 February 2020 / Revised: 9 March 2020 / Accepted: 11 March 2020 / Published: 13 March 2020
(This article belongs to the Special Issue Radio Sensing and Sensor Networks)
A growing number of devices, from car key fobs to mobile phones to WiFi-routers, are equipped with ultra-wideband radios. In the network formed by these devices, communicating modules often estimate the channel impulse response to employ a matched filter to decode transmitted data or to accurately time stamp incoming messages when estimating the time-of-flight for localization. This paper investigates how such measurements of the channel impulse response can be utilized to augment existing ultra-wideband communication and localization networks to a multi-static radar network. The approach is experimentally evaluated using off-the-shelf hardware and simple, distributed filtering, and shows that a tag-free human walking in the space equipped with ultra-wideband modules can be tracked in real time. This opens the door for various location-based smart home applications, ranging from smart audio and light systems to elderly monitoring and security systems.
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Keywords: network sensing; passive localization; device-free localization; RF-sensing; ultra-wideband; channel impulse response; IoT; multi-static radar; filtering network sensing; passive localization; device-free localization; RF-sensing; ultra-wideband; channel impulse response; IoT; multi-static radar; filtering
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    Doi: 10.3929/ethz-b-000397625
    Link: https://www.research-collection.ethz.ch/handle/20.500.11850/397625
    Description: The supplementary material is composed of two videos. In the video abstract the main concepts of the paper are visualized and a real-time experiment in a living room is shown in the second part. The other video shows other real-time experiments in different environments. The dataset described in the paper is available here: https://doi.org/10.3929/ethz-b-000397625
MDPI and ACS Style

Ledergerber, A.; D’Andrea, R. A Multi-Static Radar Network with Ultra-Wideband Radio-Equipped Devices. Sensors 2020, 20, 1599. https://doi.org/10.3390/s20061599

AMA Style

Ledergerber A, D’Andrea R. A Multi-Static Radar Network with Ultra-Wideband Radio-Equipped Devices. Sensors. 2020; 20(6):1599. https://doi.org/10.3390/s20061599

Chicago/Turabian Style

Ledergerber, Anton; D’Andrea, Raffaello. 2020. "A Multi-Static Radar Network with Ultra-Wideband Radio-Equipped Devices" Sensors 20, no. 6: 1599. https://doi.org/10.3390/s20061599

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