WSJT-X/lib/flat1b.f90
Joe Taylor 3a5df62772 Much improved detection of sync in JT4 decoder.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6686 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2016-05-19 19:19:47 +00:00

30 lines
442 B
Fortran

subroutine flat1b(psavg,nsmo,s2,nh,nsteps,nhmax,nsmax)
real psavg(nh)
real s2(nhmax,nsmax)
real x(8192)
ia=nsmo/2 + 1
ib=nh - nsmo/2 - 1
do i=ia,ib
call pctile(psavg(i-nsmo/2),nsmo,50,x(i))
enddo
do i=1,ia-1
x(i)=x(ia)
enddo
do i=ib+1,nh
x(i)=x(ib)
enddo
do i=1,nh
psavg(i)=psavg(i)/x(i)
do j=1,nsteps
s2(i,j)=s2(i,j)/x(i)
enddo
enddo
return
end subroutine flat1b