This module defines a constant-velocity DMO-transformation
of the input trace into a set of output traces.
It requires spat_map=spray in the parameters.
map_amp_init = dmo3d_map_amp_init
map_amp = dmo3d_map_amp
oper_domain = dmo3d_oper_domain
The interface of dmo3d_map_amp_init is:
function dmo3d_map_amp_init (max_slow_param,oversamp_domain) result (stat)
real, optional :: oversamp_domain
real :: max_slow_param
integer :: stat
