Signal fading curves from computed urban acoustic wave fields
2008
Future US Army ground sensors in urban terrain will process acoustic signals to detect, classify, and locate sources of
interest. Optimal processing will require understanding of the effects of the urban infrastructure on sound propagation.
These include multi-path phenomena that must be accounted for in sensor placement and performance algorithms. This
work applies Fourier analysis to urban acoustic wave-field data from three-dimensional high-performance computations
to generate statistical measures of signal fading caused by scattering. The work calculates these measures from ratios of
Fourier transforms of wave-field signals with and without scattering to isolate the structure-induced scattering.
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