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EFFICIENT TIME OF ARRIVAL CALCULATION FOR ACOUSTIC SOURCE LOCALIZATION USING WIRELESS SENSOR NETWORKS

Reddy, Prashanth G.
http://rave.ohiolink.edu/etdc/view?acc_num=csu1323970390

Abstract Details

2011, Master of Science in Electrical Engineering, Cleveland State University, Fenn College of Engineering.
Acoustic source localization is a very useful tool in surveillance and tracking applications. Potential exists for ubiquitous presence of acoustic source localization systems. However, due to several significant challenges they are currently limited in their applications. Wireless Sensor Networks (WSN) offer a feasible solution that can allow for large, ever present acoustic localization systems. Some fundamental challenges remain. This thesis presents some ideas for helping solve the challenging problems faced by networked acoustic localization systems. We make use of a low-power WSN designed specifically for distributed acoustic source localization. Our ideas are based on three important observations. First, sounds emanating from a source will be free of reflections at the beginning of the sound. We make use of this observation by selectively processing only the initial parts of a sound to be localized. Second, the significant features of a sound are more robust to various interference sources. We perform key feature recognition such as the locations of significant zero crossings and local peaks. Third, these features which are compressed descriptors, can also be used for distributed pattern matching. For this we perform basic pattern analysis by comparing sampled signals from various nodes in order to determine better Time Of Arrivals (TOA). Our implementation tests these ideas in a predictable test environment. A complete system for general sounds is left for future work.
Nigamanth Sridhar, PhD (Committee Chair)
Murad Hizlan, PhD (Committee Member)
Wenbing Zhao, PhD (Committee Member)
74 p.
Electrical Engineering
Localization; TOA; TDOA; Wireless Sensor Networks; WSN; Acoustic; Time of Arrival; Acoustic Source Localization

Recommended Citations

Citations

  • Reddy, P. G. (2011). EFFICIENT TIME OF ARRIVAL CALCULATION FOR ACOUSTIC SOURCE LOCALIZATION USING WIRELESS SENSOR NETWORKS [Master's thesis, Cleveland State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=csu1323970390

    APA Style (7th edition)

  • Reddy, Prashanth. EFFICIENT TIME OF ARRIVAL CALCULATION FOR ACOUSTIC SOURCE LOCALIZATION USING WIRELESS SENSOR NETWORKS. 2011. Cleveland State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=csu1323970390.

    MLA Style (8th edition)

  • Reddy, Prashanth. "EFFICIENT TIME OF ARRIVAL CALCULATION FOR ACOUSTIC SOURCE LOCALIZATION USING WIRELESS SENSOR NETWORKS." Master's thesis, Cleveland State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=csu1323970390

    Chicago Manual of Style (17th edition)

csu1323970390
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© 2011, all rights reserved.
This open access ETD is published by Cleveland State University and OhioLINK.
Release 3.2.12