NAME

     slstkf  - forward tau-p tansform on seismic records

SYNOPSIS

     slstkf [ -Nntap ] [ -Ootap ] [  -rsnrst  ]  [  -renred  ]  [
     -vvref  ]  [  -dxdxrec  ]  [ -pp1 ] [ -Pp2 ] [ -fmaxfmax ] [
     -otnwt1 ] [ -itnwt2 ] [ -ftftaper ] [ -B ] [ -V ] [ -? ]

DESCRIPTION

     slstkf does a slant-stack on input record & outputs a  tau-p
     record.  slstkf  works  in  the frequency domain and is used
     primarily for noise attenuation.  slstkf gets both its  data
     and  its  parameters  from  command  line  arguments or card
     images in a job stream. These arguments specify  the  input,
     output,  the  start  and  end records, the start and end ray
     angles, reference velocity, and trace & frequency,  tapering
     options.

  Command Line Input
     -N ntap
          Enter the input data set name or file immediately after
          typing  -N  on  the  command line.  This input put file
          should include the  complete  path  name  if  the  file
          resides  in  a different directory. Example -Nvsp/dummy
          tells the program to look for file 'dummy' in directory
          'vsp'.

     -O otap
          Enter the output data  set  name  or  file  immediately
          after  typing -O on the command line.  This output file
          is not required when piping the output to another  pro-
          cess.   The output data set also requires the full path
          name (see above).

     -ft ftaper
          Enter the start frequency at which a cosine taper is to
          be applied to the frequency transforms.  This can some-
          times quiet high frequency transients in the transform.
          Default = no taper.

     -v vref
          Enter the reference velocity  for  the  source/receiver
          medium (ft,m/s). No default.

     -fmax fmax
          Maximum frequency used in transform.  This  entry  must
          be kept to less than 1/2 nyquist frequency.

     -dx dxrec
          This entry is the distance between input traces (ft,m).
          No default.

     -rs nrst

     -re nred
          Only records between and including these values will be
          used. Default values are the first and last records.

     -p p1
          Start scan angle (degrees).  Default = -90

     -P p2
          End scan angle (degrees).  Default = +90

     -ot ot
          This is the number of traces at the end of  the  spread
          to  which  a  linear taper is applied. The taper starts
          with a weight of unity and reaches a weight of 1/nt  at
          the end of the array.  Default = not taper.

     -it it
          This is the number of  traces  at  the  center  of  the
          spread  (if spread is split) to which a linear taper is
          applied. The taper starts with a weight  of  unity  and
          reaches  a  weight  of  1/nt  at  the end of the array.
          Default = not taper.

     -B verbose
          Enter the command line argument '-B'  to  apply  linear
          frequency boost.  Default = none.

     -V verbose
          Enter the command line argument '-V' to get  additional
          printout.

     -?   Enter the command line  argument  '-?'  or  -h  to  get
          online  help.  The  program  terminates  after the help
          screen is printed.

SEE ALSO

     slstkr

BUGS

     Unknown

AUTHORS

     P. R. Gutowski

COPYRIGHT

     copyright 2001, Amoco Production Company
               All Rights Reserved
          an affiliate of BP America Inc.