http://www-personal.umich.edu/%7Eborcea/Publications/ip2503.pdf Witrynay the resolution of time reversal and imaging. Since they occur in random media, the resolution theory is augmented with the important concept of statistical stability. It refers to robustness of the processes with respect to di erent realizations of the random medium. Description. Time reversal is a physical experiment that uses special arrays ...
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Witryna29 paź 2001 · Time reversal in random media can result in refocusing on the source with a resolution that is better than the diffraction limit. This is because of the … WitrynaBecause of the time reversibilityof the wave equation we have (difiraction limited) refocusing of the time reversed signal at the source, in any non attenuating medium. … rayfern limited
Imaging and time reversal in random media - NASA/ADS
Witryna27 wrz 2002 · J. F. Clouetand J.-P. Fouque, “ A time reversal method for an acoustical pulse propagating in randomly layered media,” Wave Motion 25, 361– 368 (1997). Google Scholar Crossref; 33. K. Solnaand G. Papanicolaou, “ Ray theory for a locally layered random medium,” Waves Random Media 10, 151– 198 (2000). Google … WitrynaSince statistical stability is not characteristic of the frequency domain, a transform back to the time domain after first diagonalizing the array data in the frequency domain takes optimum advantage of both the time-domain stability and the frequency-domain orthogonality of the relevant eigenfunctions. Download conference paper PDF. Witryna22 paź 2014 · This is a new approach to array imaging that is motivated by time reversal in random media, analyzed in detail previously. It combines features from seismic imaging like arrival time analysis with frequency-domain signal subspace methodology like MUltiple SIgnal Classification (MUSIC). simple tcp services