Dr. Stephen A. Ketcham
at US Army Engineer Research and Development Ctr
SPIE Involvement:
Author
Publications (2)

Proceedings Article | 1 May 2008 Paper
Proceedings Volume 6963, 69630I (2008) https://doi.org/10.1117/12.777182
KEYWORDS: Acoustics, Wave propagation, 3D modeling, Signal attenuation, Finite-difference time-domain method, Environmental sensing, Signal to noise ratio, Receivers, Reflectivity, Distance measurement

Proceedings Article | 23 April 2008 Paper
Proceedings Volume 6963, 69630K (2008) https://doi.org/10.1117/12.777166
KEYWORDS: Scattering, Acoustics, Wave propagation, Statistical analysis, Sensors, Signal processing, Non-line-of-sight propagation, Signal detection, 3D modeling, Buildings

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