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Energy-efficient scheme for target recognition and localization in wireless acoustic sensor networks

Author

Listed:
  • Afnan Algobail
  • Adel Soudani
  • Saad Alahmadi

Abstract

The development of wireless acoustic sensor networks has driven the use of acoustic signals for target monitoring. Most monitoring applications require continuous network connectivity and data transfers, which can rapidly exhaust nodes’ energy. Consequently, sensors must collaborate in an adequate architecture to perform target recognition and localization tasks and then to send the results to a remote server with a reduced data volume. The design of an energy-efficient scheme that achieves acoustic target recognition and localization remains an open research problem. Accordingly, this article proposes a low-energy acoustic-based sensing scheme for target recognition and localization to be implemented in a cluster-based sensing approach designed to appropriately balance energy consumption and local processing performed by sensor nodes. A reduced set of low-complexity feature extraction methods in the time domain signal are used in the recognition process. The scheme uses the received energy of the acoustic signals for the target localization. This article details the network architecture, the scheme specification, and its implementation. The results show that the scheme can classify targets with 81.34% accuracy. It requires 3.2 mJ of energy when executed in MICAz, achieving 99% energy savings compared to streaming 3 s of an acoustic signal to a remote server.

Suggested Citation

  • Afnan Algobail & Adel Soudani & Saad Alahmadi, 2019. "Energy-efficient scheme for target recognition and localization in wireless acoustic sensor networks," International Journal of Distributed Sensor Networks, , vol. 15(11), pages 15501477198, November.
    • Handle: RePEc:sae:intdis:v:15:y:2019:i:11:p:1550147719891406
    DOI: 10.1177/1550147719891406
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