Signal fading curves from computed urban acoustic wave fields

Stephen A. Ketcham; D. Keith Wilson; Michael W. Parker; Harley H. Cudney

doi:10.1117/12.777166

23 April 2008 Signal fading curves from computed urban acoustic wave fields

Stephen A. Ketcham, D. Keith Wilson, Michael W. Parker, Harley H. Cudney

Proceedings Volume 6963, Unattended Ground, Sea, and Air Sensor Technologies and Applications X; 69630K (2008) https://doi.org/10.1117/12.777166
Event: SPIE Defense and Security Symposium, 2008, Orlando, Florida, United States

Abstract

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.

Citation Download Citation

Stephen A. Ketcham, D. Keith Wilson, Michael W. Parker, and Harley H. Cudney "Signal fading curves from computed urban acoustic wave fields", Proc. SPIE 6963, Unattended Ground, Sea, and Air Sensor Technologies and Applications X, 69630K (23 April 2008); https://doi.org/10.1117/12.777166

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