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sffftexp1 (4.0)		index
user/fomels/Mfftexp1.c
\n 2-D FFT-based prestack exploding reflector modeling/migration \n

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\n Synopsis
       sffftexp1 < data.rsf > image.rsf left=left.rsf right=right.rsf mig=n snap=0 nz= dz= nt= dt= nh= dh= cmplx=n sub=y
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\n Parameters
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bool cmplx=n [y/n]		\tuse complex FFT
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float dh= 		\toffset sampling (if modeling)
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float dt= 		\ttime sampling (if modeling)
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float dz= 		\ttime sampling (if migration)
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file left= 		\tauxiliary input file name
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bool mig=n [y/n]		\tif n, modeling; if y, migration
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int nh= 		\toffset samples (if modeling)
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int nt= 		\ttime samples (if modeling)
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int nz= 		\ttime samples (if migration)
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file right= 		\tauxiliary input file name
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int snap=0 		\tinterval for snapshots
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bool sub=y [y/n]		\tif -1 is included in the matrix
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