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Sensor Localization for Location-Based Authentication

Sensor Localization for Location-Based Authentication. Valliappan Annamalai And John Quintero. Project Goals. Develop a localization mechanism for use in location-based authentication. Location-based access to computing resources. Focus on determining location indoors. Challenges.

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Sensor Localization for Location-Based Authentication

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  1. Sensor Localization for Location-Based Authentication Valliappan Annamalai And John Quintero

  2. Project Goals • Develop a localization mechanism for use in location-based authentication. • Location-based access to computing resources. • Focus on determining location indoors.

  3. Challenges • Indoor signal propagation subject to suffers from multipath propagation, shadowing and scattering. • Use scene analysis by constructing a signal-strength map of the lab. • Antenna orientation and pedestrian traffic cause local variation in signal strength.

  4. Project Applications • Badge • Base Station • Serial Forwarder • Tracker Sender • Tracker Server

  5. Example Architecture • Six base stations are used to capture signal strength information from a badge, which is compared to a pre-compiled mapping. • B: badge broadcasts id to establish its location. • BS: wireless base station captures badge signal strength, forwards to base station. BS BS BS B BS BS BS

  6. Application Messaging Tracker Sender Tracker Server Badge Base Station W/L Message With Bdg ID Bdg Msg With BS ID and Signal Strength Forwards the Messages it Receives 1 Sec UDP data packets with BS message W/L Message With Bdg ID Serial Forwarder Second PC One PC

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