Team for Research in
Ubiquitous Secure Technology

Citation
M. Maroti, B. Kusy, G.. Balogh, P. Volgyesi, A. Nadas, K. Molnar, S. Dora, A. Ledeczi. "Radio Interferometric Geolocation". in Proc. ACM 3rd Conference on Embedded Networked Sensor Systems (SenSys'05), November, 2005; paper link.

Abstract
We present a novel radio interference based sensor localization method for wireless sensor networks. The technique relies on a pair of nodes emitting radio waves simultaneously at slightly different frequencies. The carrier frequency of the composite signal is between the two frequencies, but has a very low frequency envelope. Neighboring nodes can measure the energy of the envelope signal as the signal strength. The relative phase offset of this signal measured at two receivers is a function of the distances between the four nodes involved and the carrier frequency. By making multiple measurements in an at least 8-node network, it is possible to reconstruct the relative location of the nodes in 3D. Our prototype implementation on the MICA2 platform yields an average localization error as small as 3~cm and a range of up to 160~meters. In addition to this high precision and long range, the other main advantage of the Radio Interferometric Positioning System (RIPS) is the fact that it does not require any sensors other than the radio used for wireless communication.

Electronic downloads

• HTML

  M. Maroti, B. Kusy, G.. Balogh, P. Volgyesi, A. Nadas, K.
  Molnar, S. Dora, A. Ledeczi. <a
  href="http://www.truststc.org/pubs/148.html">Radio
  Interferometric Geolocation</a>, in Proc. ACM 3rd
  Conference on Embedded Networked Sensor Systems (SenSys'05),
  November, 2005; <a
  href="http://www.isis.vanderbilt.edu/publications/archive/Maroti_M_11_3_2005_Radio_Inte.pdf"
  >paper link</a>.

• Plain text

  M. Maroti, B. Kusy, G.. Balogh, P. Volgyesi, A. Nadas, K.
  Molnar, S. Dora, A. Ledeczi. "Radio Interferometric
  Geolocation". in Proc. ACM 3rd Conference on Embedded
  Networked Sensor Systems (SenSys'05), November, 2005; <a
  href="http://www.isis.vanderbilt.edu/publications/archive/Maroti_M_11_3_2005_Radio_Inte.pdf"
  >paper link</a>.

• BibTeX

  @inproceedings{MarotiKusyBaloghVolgyesiNadasMolnarDoraLedeczi05_RadioInterferometricGeolocation,
      author = {M. Maroti and B. Kusy and G.. Balogh and P.
                Volgyesi and A. Nadas and K. Molnar and S. Dora
                and A. Ledeczi},
      title = {Radio Interferometric Geolocation},
      booktitle = {in Proc. ACM 3rd Conference on Embedded Networked
                Sensor Systems (SenSys'05)},
      month = {November},
      year = {2005},
      note = {<a
                href="http://www.isis.vanderbilt.edu/publications/archive/Maroti_M_11_3_2005_Radio_Inte.pdf"
                >paper link</a>},
      abstract = {We present a novel radio interference based sensor
                localization method for wireless sensor networks.
                The technique relies on a pair of nodes emitting
                radio waves simultaneously at slightly different
                frequencies. The carrier frequency of the
                composite signal is between the two frequencies,
                but has a very low frequency envelope. Neighboring
                nodes can measure the energy of the envelope
                signal as the signal strength. The relative phase
                offset of this signal measured at two receivers is
                a function of the distances between the four nodes
                involved and the carrier frequency. By making
                multiple measurements in an at least 8-node
                network, it is possible to reconstruct the
                relative location of the nodes in 3D. Our
                prototype implementation on the MICA2 platform
                yields an average localization error as small as
                3~cm and a range of up to 160~meters. In addition
                to this high precision and long range, the other
                main advantage of the Radio Interferometric
                Positioning System (RIPS) is the fact that it does
                not require any sensors other than the radio used
                for wireless communication. },
      URL = {http://www.truststc.org/pubs/148.html}
  }
  

Posted by Brano Kusy on 7 Dec 2006.
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