LeakyTrack: Non-coherent single-antenna nodal and environmental mobility tracking with a leaky-wave antenna

Yasaman Ghasempour, Chia Yi Yeh, Rabi Shrestha, Yasith Amarasinghe, Daniel Mittleman, Edward W. Knightly

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Radio frequency signals have the potential to convey rich information about a node's motion and surroundings. Unfortunately, extracting such information is challenging, previously requiring accurate phase measurement, large antenna array structures, or extensive training. In this paper, we present LeakyTrack, a novel system that enables non-coherent and training-free motion sensing with a single antenna. The key idea is to create unique spectrally coded signals at different spatial directions so that geometric properties of the receiving node, as well as any potential objects in the environment, leave spectral footprints on the collected signal. To do so, we exploit a THz leaky-wave antenna and realize a color-coded scan in which signals with distinct spectral characteristics simultaneously emit across the angular domain. LeakyTrack infers nodal and environmental motion by analyzing the received spectral profile. We evaluate the performance of LeakyTrack via extensive over-the-air experiments.

Original languageEnglish (US)
Title of host publicationSenSys 2020 - Proceedings of the 2020 18th ACM Conference on Embedded Networked Sensor Systems
PublisherAssociation for Computing Machinery, Inc
Pages56-68
Number of pages13
ISBN (Electronic)9781450375900
DOIs
StatePublished - Nov 16 2020
Externally publishedYes
Event18th ACM Conference on Embedded Networked Sensor Systems, SenSys 2020 - Virtual, Online, Japan
Duration: Nov 16 2020Nov 19 2020

Publication series

NameSenSys 2020 - Proceedings of the 2020 18th ACM Conference on Embedded Networked Sensor Systems

Conference

Conference18th ACM Conference on Embedded Networked Sensor Systems, SenSys 2020
Country/TerritoryJapan
CityVirtual, Online
Period11/16/2011/19/20

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Keywords

  • leaky-wave antenna
  • terahertz waves
  • wireless sensing

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