Doctoral Dissertations


Nurbanu Guzey


"The precise localization and tracking of electronic devices via their unintended emissions has a broad range of commercial and security applications. Active stimulation of the receivers of such devices with a known signal generates very low power unintended emissions. This dissertation presents localization and tracking of multiple devices using both simulation and experimental data in the form of five papers.

First the localization of multiple emitting devices through active stimulation under multipath fading with a Smooth MUSIC based scheme in the near field region is presented. Spatial smoothing helps to separate the correlated sources and the multipath fading and results confirm improved accuracy. A cost effective near-field localization method is proposed next to locate multiple correlated unintended emitting devices under colored noise conditions using two well separated antenna arrays since colored noise in the environment degrades the subspace-based localization techniques.

Subsequently, in order to track moving sources, a near-field scheme by using array output is introduced to monitor direction of arrival (DOA) and the distance between the antenna array and the moving source. The array output, which is a nonlinear function of DOA and distance information, is employed in the Extended Kalman Filter (EKF). In order to show the near- and far-field effect on estimation accuracy, computer simulation results are included for localization and tracking techniques.

Finally, an L-shaped array is constructed and a suite of schemes are introduced for localization and tracking of such devices in the three-dimensional environment. Experimental results for localization and tracking of unintended emissions from single and multiple devices in the near-field environment of an antenna array are demonstrated"--Abstract, page iv.


Sarangapani, Jagannathan, 1965-

Committee Member(s)

Zawodniok, Maciej Jan, 1975-
Grant, Steven L.
Ghasr, Mohammad Tayeb Ahmad, 1980-
Madria, Sanjay Kumar


Electrical and Computer Engineering

Degree Name

Ph. D. in Electrical Engineering


Missouri University of Science and Technology

Publication Date

Fall 2015

Journal article titles appearing in thesis/dissertation

  • Localization of near-field radio controlled unintended emitting sources in the presence of multipath fading
  • Localization of near-field sources in spatially colored noise
  • Tracking of radio-controlled sources using unintended emissions
  • Analysis of localization and tracking methods for unintended emitting sources
  • Localization and tracking of unintended emitting sources in 3D environments


xvi, 188 pages

Note about bibliography

Includes bibliographic references.


© 2015 Nurbanu Guzey, All rights reserved.

Document Type

Dissertation - Open Access

File Type




Subject Headings

Electromagnetic interference -- Computer simulation
Signal detection -- Computer simulation
Electromagnetic waves -- Computer simulation
Near-fields -- Measurement
Tracking (Engineering)

Thesis Number

T 10824

Electronic OCLC #