Time - Exposure Acoustics for Imaging Underground Structures
نویسندگان
چکیده
An analysis of a passh'e seismic method for subsurface imaging is presenled. in which ambienl seismic noise is employed as the source of iIIu,;"ination of undergro~nd scal~erers.The imaging algorithm can ,"corporate new data mto the '!'lagein a recursive fashion, which causes image background nOise todiminish over time. Under the assumption of spatially-incoherentambient noise. an analylical expression for Ihe point-spread runction of the imaging algorithm is derhled. The point-spread function(PDF) characterizes the resolution ofthe i.mage. ~hich is II yunctionofthe receiving array length and the ambient nOIse bandWIdth. Results of a Monte Carlo simulation are presented to illustrate thetheory.Inde:r: Terms-Acoustic imaging, acoustic tomography. geophysical inverse problems, geophysical signal processing, geophysicaltomography, image reconstruction, seismic inverse problems.
منابع مشابه
Time exposure acoustics
An analysis of a passive seismic method for subsurface imaging is presented, in which ambient seismic noise is employed as the source of illumination of underground scatterers. The imaging algorithm can incorporate new data into the image in a recursive fashion, which causes image background noise to diminish over time. Under the assumption of spatially-incoherent ambient noise, an analytical e...
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