Improved temporal and spatial focusing using deconvolution : theoretical, numerical and experimental studies
Time Reversal can be used to time reverse and propagate the measured scattered waveforms to a point in both time and space, ideally to a delta function [delta(r with an arrow over it)delta(t)]. This is commonly referred to as time reversal focusing and has led to time reversal being applied in a wide variety of fields such as medicine, communications, nondestructive evaluation (NDE), and seismology. In practice, time reversal is not optimal for generating a delta function focus if certain conditions are not upheld. For time reversal to work perfectly, the following four conditions must be ...
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