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Fix a bug in analytic.f90 and enable amplitude flattening. This version is not intended for general use on MSK144 as it uses hardwired coefficients derived for use with a specific radio.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7428 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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@ -8,7 +8,7 @@ subroutine analytic(d,npts,nfft,c,dpc,bseq,bdeq)
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real h(NFFTMAX/2) ! real BPF magnitude
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real dpc(3),dpclast(3) ! dynamic phase coeffs
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real spc(3),spclast(3) ! static phase coeffs
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real ac(5) ! currently unused static amp coeffs
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real sac(5),saclast(5) ! amp coeffs
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real fp
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complex corrs(NFFTMAX/2) ! allpass static phase correction
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@ -22,10 +22,11 @@ subroutine analytic(d,npts,nfft,c,dpc,bseq,bdeq)
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data nfft0/0/
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data bseqlast/.false./
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data spclast/0.0,0.0,0.0/
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data saclast/1.0,0.0,0.0,0.0,0.0/
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data spc/-0.952,0.768,-0.565/ ! baseline phase coeffs for TS2000
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data ac/1.0,0.05532,0.11438,0.12918,0.09274/ ! amp coeffs for TS2000
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data sac/1.0,0.05532,0.11438,0.12918,0.09274/ ! amp coeffs for TS2000
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save nfft0,h,spc,spclast,dpclast,ac,pi,t,beta
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save corrs,corrd,nfft0,h,sac,spc,saclast,spclast,dpclast,pi,t,beta
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df=12000.0/nfft
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nh=nfft/2
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@ -39,20 +40,24 @@ subroutine analytic(d,npts,nfft,c,dpc,bseq,bdeq)
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h(i)=1.0
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if(abs(f).gt.(1-beta)/(2*t) .and. abs(f).le.(1+beta)/(2*t)) then
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h(i)=h(i)*0.5*(1+cos((pi*t/beta )*(abs(f)-(1-beta)/(2*t))))
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elseif( abs(f) .gt. (1+beta)/(2*t) ) then
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h(i)=0.0
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endif
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enddo
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nfft0=nfft
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endif
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if( any(spclast .ne. spc) .or. any(dpclast .ne. dpc) ) then
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if( any(spclast .ne. spc) .or. any(saclast .ne. sac) .or. any(dpclast .ne. dpc) ) then
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spclast=spc
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dpclast=dpc
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saclast=sac
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do i=1,nh+1
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ff=(i-1)*df
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f=ff-1500.0
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fp=f/1000.0
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ps=fp*fp*(spc(1)+fp*(spc(2)+fp*spc(3)))
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corrs(i)=cmplx(cos(ps),sin(ps))
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amp=sac(1)+fp*(sac(2)+fp*(sac(3)+fp*(sac(4)+fp*sac(5))))
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corrs(i)=amp*cmplx(cos(ps),sin(ps))
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pd=fp*fp*(dpc(1)+fp*(dpc(2)+fp*dpc(3)))
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corrd(i)=cmplx(cos(pd),sin(pd))
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enddo
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@ -76,7 +81,5 @@ subroutine analytic(d,npts,nfft,c,dpc,bseq,bdeq)
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c(1)=0.5*c(1) !Half of DC term
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c(nh+2:nfft)=0. !Zero the negative frequencies
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call four2a(c,nfft,1,1,1) !Inverse c2c FFT
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spclast=spc
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dpclast=dpc
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return
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end subroutine analytic
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@ -205,7 +205,7 @@ write(*,*) 'training ',navg,sqrt(chisqr),rmsdiff
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close(18)
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open(19,file='cframe.dat',status='unknown')
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do i=1,864
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write(19,*) i,real(cframe(i)),imag(cframe(i))
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write(19,*) i,real(cframe(i)),imag(cframe(i)),real(cross_avg(i)),imag(cross_avg(i))
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enddo
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close(19)
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pcoeffs=a(3:5)
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