mirror of https://github.com/saitohirga/WSJT-X.git
28 lines
454 B
Fortran
28 lines
454 B
Fortran
subroutine flat1(savg,iz,nsmo,syellow)
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real savg(iz)
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real syellow(iz)
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real x(8192)
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ia=nsmo/2 + 1
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ib=iz - nsmo/2 - 1
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nstep=20
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nh=nstep/2
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do i=ia,ib,nstep
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call pctile(savg(i-nsmo/2),nsmo,50,x(i))
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x(i-nh:i+nh-1)=x(i)
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enddo
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do i=1,ia-1
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x(i)=x(ia)
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enddo
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do i=ib+1,iz
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x(i)=x(ib)
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enddo
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x0=0.001*maxval(x(1:iz))
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syellow(1:iz)=savg(1:iz)/(x(1:iz)+x0)
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return
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end subroutine flat1
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