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Device-Free Indoor Localization Using Ambient Radio Signals
Andrei Popleteev
SnT, University of Luxembourg
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Using Ambient Radio Signals Andrei Popleteev SnT, University of - - PowerPoint PPT Presentation
Using Ambient Radio Signals Andrei Popleteev SnT, University of - - PowerPoint PPT Presentation
Device-Free Indoor Localization Using Ambient Radio Signals Andrei Popleteev SnT, University of Luxembourg 2 Image: Particle physics education CD-ROM, 1999 CERN. Device-free sensing User freedom Nothing to carry Research freedom
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Image: Particle physics education CD-ROM, 1999 CERN.
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Device-free sensing
- User freedom
– Nothing to carry
- Research freedom
– More computational resources at hand – Unlimited grid power, not battery – More antennas
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State of the art: Line-of-sight shadowing
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Wireless transceivers
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State of the art: Line-of-sight shadowing
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State of the art: Line-of-sight shadowing
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State of the art: Line-of-sight shadowing
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State of the art: Line-of-sight shadowing
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Source: fmscan.org
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Ambient radio sensing
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Proof of the concept (video)
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Sample dataset
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Localization performance
- 4 days, 2 datasets daily
- 85% same-day accuracy
- 65% three days later
(still better than 20% of random guess)
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The more stations – the better
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0.2 0.4 0.6 0.8 1 5 6 7 8 9 10 11
Localization accuracy Number of channels
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Summary
- Device-free localization with ambient
radio is feasible
- Frequency diversity is essential
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