WSJT-X/lib/flat1.f90
Bill Somerville 34f8924cfc Reintegrate the wsjtx_exp branch into the trunk
This  merge brings  the WSPR  feature development  into the  main line
ready for release in a future v1.6 release.



git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@5424 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2015-05-27 13:08:28 +00:00

24 lines
421 B
Fortran

subroutine flat1(savg,iz,nsmo,syellow)
real savg(iz)
real syellow(iz)
real x(8192)
ia=nsmo/2 + 1
ib=iz - nsmo/2 - 1
nstep=20
nh=nstep/2
do i=ia,ib,nstep
call pctile(savg(i-nsmo/2),nsmo,50,x(i))
x(i-nh:i+nh-1)=x(i)
enddo
x(1:ia-1)=x(ia)
x(ib+1:iz)=x(ib)
x0=0.001*maxval(x(iz/10:(9*iz)/10))
syellow(1:iz)=savg(1:iz)/(x(1:iz)+x0)
return
end subroutine flat1