# Leveraging Electromagnetic Polarization in a Two-Antenna Whiteboard in the Air

## Author(s): Shangguan, Longfei; Jamieson, Kyle

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DC FieldValueLanguage
dc.contributor.authorShangguan, Longfei-
dc.contributor.authorJamieson, Kyle-
dc.date.accessioned2021-10-08T19:49:23Z-
dc.date.available2021-10-08T19:49:23Z-
dc.date.issued2016-12en_US
dc.identifier.citationShangguan, Longfei, and Kyle Jamieson. "Leveraging Electromagnetic Polarization in a Two-Antenna Whiteboard in the Air." In Proceedings of the 12th International on Conference on Emerging Networking Experiments and Technologies (2016): pp. 443-456. doi:10.1145/2999572.2999601en_US
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1mv8q-
dc.description.abstractWireless sensing, tracking, and drawing technologies are enabling exciting new possibilities for human-machine interaction. They primarily rely on measurements of backscattered phase, amplitude, and Doppler signal distortions, and often require many measurements of these quantities---in time, or from multiple antennas. In this paper we present the design and implementation of PolarDraw, the first whiteboard in the air that sends differentially-polarized wireless signals to glean more precise tracking information from a tag. Leveraging information received from each polarization angle, our novel algorithms infer orientation and position of an RFID-tagged pen using just two antennas, when the user writes in the air or on a physical whiteboard. An experimental comparison in a cluttered indoor office environment compares two-antenna PolarDraw with recent state-of-the-art object tracking systems that use double the number of antennas, demonstrating comparable centimeter-level tracking accuracy and character recognition rates (88--94%), thus making a case for the use of polarization in many other tracking systems.en_US
dc.format.extent443 - 456en_US
dc.language.isoen_USen_US
dc.relation.ispartofProceedings of the 12th International on Conference on Emerging Networking Experiments and Technologiesen_US
dc.rightsFinal published version. This is an open access article.en_US
dc.titleLeveraging Electromagnetic Polarization in a Two-Antenna Whiteboard in the Airen_US
dc.typeConference Articleen_US
dc.identifier.doi10.1145/2999572.2999601-
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/conference-proceedingen_US

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