Geological noise and target signals in controlled source electromagnetic data
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© 2002 Society of Exploration Geophysicists. Controlled-source electromagnetic spatial profiles were obtained on the Brazos Valley, TX floodplain to study the fractal statistics of geological noise and effects of manmade conductive metal targets on the wavenumber spectrum. Targets tend to flatten the power-law power spectrum at small wavenumbers. Detection and localization of targets can be achieved using short-time Fourier or, preferably, continuous wavelet spectrogram techniques. A simple pre-processing step that combines responses from different transmitter-receiver orientations greatly enhances the localization and resolution of targets.
author list (cited authors)
Benavides, A., & Everett, M. E.