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https://github.com/saitohirga/WSJT-X.git
synced 2024-12-23 19:25:37 -05:00
Many changes in aid of decoding signals with significant Doppler spread
in submodes JT65B, C. More changes still to come! git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6535 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor
parent
8d21cdf1c7
commit
9f388b63dc
@ -83,11 +83,14 @@ subroutine decode65a(dd,npts,newdat,nqd,f0,nflip,mode65,ntrials, &
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call timer('dec65b ',0)
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qualbest=0.
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minsmo=0
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maxsmo=0
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if(mode65.eq.2) maxsmo=5
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if(mode65.eq.4) maxsmo=10
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if(mode65.ge.2) then
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minsmo=nint(width/df)
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maxsmo=2*minsmo
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endif
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nn=0
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do ismo=0,maxsmo
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do ismo=minsmo,maxsmo
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if(ismo.gt.0) then
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do j=1,126
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call smo121(s1(-255,j),512)
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@ -127,6 +130,8 @@ subroutine decode65a(dd,npts,newdat,nqd,f0,nflip,mode65,ntrials, &
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endif
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enddo
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! print*,width,minsmo,maxsmo,nsmo,nn
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if(nft.eq.2) then
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decoded=decoded_best
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qual=qualbest
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@ -198,7 +198,7 @@ contains
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1000 format(a1,i5.4,f6.1,f6.2,i6,1x,a1)
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end subroutine jt4_average
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subroutine jt65_decoded(this,utc,sync,snr,dt,freq,drift,decoded,ft, &
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subroutine jt65_decoded(this,utc,sync,snr,dt,freq,drift,width,decoded,ft, &
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qual,nsmo,nsum,minsync,nsubmode,naggressive)
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use jt65_decode
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@ -211,6 +211,7 @@ contains
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real, intent(in) :: dt
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integer, intent(in) :: freq
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integer, intent(in) :: drift
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real, intent(in) :: width
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character(len=22), intent(in) :: decoded
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integer, intent(in) :: ft
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integer, intent(in) :: qual
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@ -243,8 +244,8 @@ contains
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1010 format(i4.4,i4,f5.1,i5,1x,a1,1x,a22,a3)
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endif
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write(13,1012) utc,nint(sync),snr,dt,float(freq),drift,decoded,ft,nsmo
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1012 format(i4.4,i4,i5,f6.1,f8.0,i4,3x,a22,' JT65',i4,i2)
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write(13,1012) utc,nint(sync),snr,dt,float(freq),drift,decoded,ft,nsum,nsmo
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1012 format(i4.4,i4,i5,f6.2,f8.0,i4,3x,a22,' JT65',3i3)
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call flush(6)
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!$omp end critical(decode_results)
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@ -18,7 +18,7 @@ program fer65
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! -s S/N in 2500 Hz -s single-decode mode
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implicit real*8 (a-h,o-z)
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real*8 s(5),sq(5)
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real*8 s(6),sq(6)
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character arg*12,cmnd*100,decoded*22,submode*1,csync*1
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logical syncok
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@ -51,11 +51,11 @@ program fer65
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open(21,file='fer65.21',status='unknown')
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write(20,1000) submode,iters,ntrials,naggressive,d
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1000 format('JT65',a1,' Iters:',i6,' T:',i7,' Aggressive:',i3, &
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1000 format(/'JT65',a1,' Iters:',i6,' T:',i7,' Aggressive:',i3, &
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' Doppler:',f6.1)
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write(20,1002)
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1002 format(/' dB nsync ngood nbad sync dsnr ', &
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'DT Freq Drift'/77('-'))
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'DT Freq Drift Width'/85('-'))
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do isnr=0,20
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snr=snr1+isnr
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@ -77,37 +77,41 @@ program fer65
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isync=0
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nsnr=0
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dt=0.
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freq=0.
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nfreq=0
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ndrift=0
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nwidth=0
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cmnd='./jt65 -m A -a 10 -f 1500 -n 1000 -d 3 -s -X 32 000000_0001.wav > decoded.txt'
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cmnd(11:11)=submode
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! print*,cmnd
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call system(cmnd)
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open(13,file='fort.13',status='old',err=20)
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read(13,1012) nutc,isync,nsnr,dt,freq,ndrift,decoded,nft,nsum,nsmo
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1012 format(i4,i4,i5,f6.2,f8.0,i4,3x,a22,5x,3i3)
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read(13,1012) nutc,isync,nsnr,dt,nfreq,ndrift,nwidth,decoded, &
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nft,nsum,nsmo
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1012 format(i4,i4,i5,f6.2,i5,i4,i3,1x,a22,5x,3i3)
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close(13)
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syncok=abs(dt).lt.0.2 .and. abs(freq-1500.0).lt.dfmax
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syncok=abs(dt).lt.0.2 .and. float(abs(nfreq-1500)).lt.dfmax
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csync=' '
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if(syncok) csync='*'
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write(21,1014) nutc,isync,nsnr,dt,freq,ndrift,nft,nsum,nsmo,csync, &
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decoded(1:16)
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1014 format(i4,i4,i5,f6.2,f8.0,i4,3x,3i3,1x,a1,1x,a16)
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write(21,1014) nutc,isync,nsnr,dt,nfreq,ndrift,nwidth, &
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nft,nsum,nsmo,csync,decoded(1:16)
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1014 format(i4,i4,i5,f6.2,i5,i4,3x,4i3,1x,a1,1x,a16)
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if(syncok) then
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nsync=nsync+1
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s(1)=s(1) + isync
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sq(1)=sq(1) + isync*isync
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s(6)=s(6) + nwidth
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sq(6)=sq(6) + nwidth*nwidth
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if(decoded.eq.'K1ABC W9XYZ EN37 ') then
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ngood=ngood+1
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s(1)=s(1) + isync
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s(2)=s(2) + nsnr
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s(3)=s(3) + dt
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s(4)=s(4) + freq
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s(4)=s(4) + nfreq
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s(5)=s(5) + ndrift
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sq(1)=sq(1) + isync*isync
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sq(2)=sq(2) + nsnr*nsnr
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sq(3)=sq(3) + dt*dt
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sq(4)=sq(4) + freq*freq
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sq(4)=sq(4) + nfreq*nfreq
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sq(5)=sq(5) + ndrift*ndrift
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else if(decoded.ne.' ') then
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nbad=nbad+1
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@ -118,20 +122,27 @@ program fer65
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fsync=float(nsync)/iter
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fgood=float(ngood)/iter
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fbad=float(nbad)/iter
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write(*,1020) iter,isync,nsnr,dt,int(freq),ndrift,fsync,fgood,fbad, &
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decoded(1:16)
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1020 format(i8,2i4,f7.2,i6,i4,2f7.3,f10.6,1x,a16)
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write(*,1020) iter,isync,nsnr,dt,nfreq,ndrift,nwidth,fsync,fgood, &
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fbad,decoded(1:18)
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1020 format(i8,2i4,f7.2,i6,i4,i3,2f7.3,f8.4,1x,a18)
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enddo
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if(nsync.ge.1) then
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xsync=s(1)/nsync
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xwidth=s(6)/nsync
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endif
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if(nsync.ge.2) then
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esync=sqrt(sq(1)/nsync - xsync**2)
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ewidth=sqrt(sq(6)/nsync - xwidth**2)
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endif
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if(ngood.ge.1) then
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xsync=s(1)/ngood
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xsnr=s(2)/ngood
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xdt=s(3)/ngood
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xfreq=s(4)/ngood
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xdrift=s(5)/ngood
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endif
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if(ngood.ge.2) then
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esync=sqrt(sq(1)/ngood - xsync**2)
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esnr=sqrt(sq(2)/ngood - xsnr**2)
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edt=sqrt(sq(3)/ngood - xdt**2)
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efreq=sqrt(sq(4)/ngood - xfreq**2)
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@ -139,10 +150,11 @@ program fer65
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endif
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dsnr=xsnr-snr
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dfreq=xfreq-1500.0
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if(ngood.eq.0) dsnr=0.
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write(20,1100) snr,nsync,ngood,nbad,xsync,esync,dsnr,esnr, &
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xdt,edt,xfreq,efreq,xdrift,edrift
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1100 format(f5.1,2i6i4,2f6.1,f6.1,f5.1,f6.2,f5.2,f7.1,3f5.1)
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xdt,edt,dfreq,efreq,xdrift,edrift,xwidth,ewidth
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1100 format(f5.1,2i6i4,2f6.1,f6.1,f5.1,f6.2,f5.2,6f5.1)
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flush(20)
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enddo
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@ -79,7 +79,7 @@ program jt65
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case ('X')
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read (optarg(:narglen), *) nexp_decoded
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case ('s')
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ntol=10
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ntol=100
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nlow=nfqso-ntol
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nhigh=nfqso+ntol
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n2pass=1
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@ -1,6 +1,6 @@
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module jt65_decode
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integer, parameter :: NSZ=3413, NZMAX=60*12000, NFFT=1000
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integer, parameter :: NSZ=3413, NZMAX=60*12000
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type :: jt65_decoder
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procedure(jt65_decode_callback), pointer :: callback => null()
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@ -13,7 +13,7 @@ module jt65_decode
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!
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abstract interface
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subroutine jt65_decode_callback(this,utc,sync,snr,dt,freq,drift, &
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decoded,ft,qual,nsmo,nsum,minsync,nsubmode,naggressive)
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width,decoded,ft,qual,nsmo,nsum,minsync,nsubmode,naggressive)
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import jt65_decoder
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implicit none
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@ -24,6 +24,7 @@ module jt65_decode
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real, intent(in) :: dt
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integer, intent(in) :: freq
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integer, intent(in) :: drift
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real, intent(in) :: width
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character(len=22), intent(in) :: decoded
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integer, intent(in) :: ft
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integer, intent(in) :: qual
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@ -142,7 +143,38 @@ contains
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! If a candidate was found within +/- ntol of nfqso, move it into ca(1).
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call fqso_first(nfqso,ntol,ca,ncand)
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if(single_decode) ncand=1
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df=12000.0/8192.0 !df = 1.465 Hz
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width=0.
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if(single_decode) then
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ncand=1
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smax=-1.e30
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do i=151,NSZ-150
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if(savg(i).gt.smax) then
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smax=savg(i)
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ipk=i
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endif
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! write(50,3001) i*df,savg(i)
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!3001 format(2f12.3)
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enddo
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base=(sum(savg(ipk-149:ipk-50)) + sum(savg(ipk+51:ipk+150)))/200.0
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stest=smax - 0.5*(smax-base)
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ssum=savg(ipk)
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do i=1,50
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if(savg(ipk+i).lt.stest) exit
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ssum=ssum + savg(ipk+i)
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enddo
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do i=1,50
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if(savg(ipk-i).lt.stest) exit
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ssum=ssum + savg(ipk-i)
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enddo
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ww=ssum/savg(ipk)
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width=2
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t=ww*ww - 5.67
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if(t.gt.0.0) width=sqrt(t)
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width=df*width
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! print*,'Width:',width
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endif
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nvec=ntrials
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if(ncand.gt.75) then
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@ -150,7 +182,6 @@ contains
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nvec=100
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endif
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df=12000.0/NFFT !df = 12000.0/8192 = 1.465 Hz
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mode65=2**nsubmode
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nflip=1 !### temporary ###
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nqd=0
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@ -164,9 +195,9 @@ contains
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endif
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do icand=1,ncand
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freq=ca(icand)%freq
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dtx=ca(icand)%dt
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sync1=ca(icand)%sync
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dtx=ca(icand)%dt
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freq=ca(icand)%freq
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if(ipass.eq.1) ntry65a=ntry65a + 1
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if(ipass.eq.2) ntry65b=ntry65b + 1
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call timer('decod65a',0)
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@ -190,6 +221,8 @@ contains
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nfreq=nint(freq+a(1))
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ndrift=nint(2.0*a(2))
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s2db=10.0*log10(sync2) - 35 !### empirical ###
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if(width.gt.3) s2db=s2db + 2.1*sqrt(width-3.0) + 1.5 + &
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0.11*(width-7.0) !### empirical^2 ###
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nsnr=nint(s2db)
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if(nsnr.lt.-30) nsnr=-30
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if(nsnr.gt.-1) nsnr=-1
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@ -208,7 +241,7 @@ contains
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if (associated(this%callback) .and. nsum.ge.2) then
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call this%callback(nutc,sync1,nsnr,dtx-1.0,nfreq,ndrift, &
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avemsg,nftt,nqual,nsmo,nsum,minsync,nsubmode, &
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width,avemsg,nftt,nqual,nsmo,nsum,minsync,nsubmode, &
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naggressive)
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prtavg=.true.
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cycle
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@ -231,7 +264,8 @@ contains
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if(rtt.gt.r0(n)) cycle
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endif
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5 if(decoded.eq.decoded0 .and. abs(freq-freq0).lt. 3.0 .and. &
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5 continue
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if(decoded.eq.decoded0 .and. abs(freq-freq0).lt. 3.0 .and. &
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minsync.ge.0) cycle !Don't display dupes
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if(decoded.ne.' ' .or. minsync.lt.0) then
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if( nsubtract .eq. 1 ) then
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@ -259,7 +293,7 @@ contains
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nqual=min(qual,9999.0)
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if (associated(this%callback)) then
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call this%callback(nutc,sync1,nsnr,dtx-1.0,nfreq,ndrift, &
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decoded,nft,nqual,nsmo,nsum,minsync,nsubmode, &
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width,decoded,nft,nqual,nsmo,nsum,minsync,nsubmode, &
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naggressive)
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end if
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endif
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@ -8,5 +8,6 @@ module jt65_mod
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real s1(-255:256,126)
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real s3a(64,63)
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real pr(126)
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real width
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end module jt65_mod
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@ -29,14 +29,14 @@ contains
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call timer('jt65a ',0)
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call my_decoder%decode(my_callback,dd,npts=52*12000,newdat=.true., &
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nutc=nutc,nf1=nflow,nf2=nfhigh,nfqso=nfqso,ntol=ntol, &
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nsubmode=nsubmode, minsync=0,nagain=.false.,n2pass=n2pass, &
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nsubmode=nsubmode, minsync=-1,nagain=.false.,n2pass=n2pass, &
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nrobust=nrobust,ntrials=ntrials,naggressive=naggressive, &
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ndepth=ndepth,nclearave=nclearave,mycall=mycall,hiscall=hiscall, &
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hisgrid=hisgrid,nexp_decode=nexp_decode)
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call timer('jt65a ',1)
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end subroutine test
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subroutine my_callback (this, utc, sync, snr, dt, freq, drift, decoded &
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subroutine my_callback (this,utc,sync,snr,dt,freq,drift,width,decoded &
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, ft, qual, smo, sum, minsync, submode, aggression)
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use jt65_decode
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implicit none
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@ -48,6 +48,7 @@ contains
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real, intent(in) :: dt
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integer, intent(in) :: freq
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integer, intent(in) :: drift
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real, intent(in) :: width
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character(len=22), intent(in) :: decoded
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integer, intent(in) :: ft
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integer, intent(in) :: qual
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@ -56,11 +57,14 @@ contains
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integer, intent(in) :: minsync
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integer, intent(in) :: submode
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integer, intent(in) :: aggression
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integer nwidth
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nwidth=max(nint(width),2)
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write(*,1010) utc,snr,dt,freq,decoded
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1010 format(i4.4,i4,f5.1,i5,1x,'#',1x,a22)
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write(13,1012) utc,nint(sync),snr,dt,float(freq),drift,decoded,ft
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1012 format(i4.4,i4,i5,f6.1,f8.0,i4,3x,a22,' JT65',i4)
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write(13,1012) utc,nint(sync),snr,dt,freq,drift,nwidth, &
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decoded,ft,sum,smo
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1012 format(i4.4,i4,i5,f6.2,i5,i4,i3,1x,a22,' JT65',3i3)
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call flush(6)
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! write(79,3001) utc,sync,snr,dt,freq,candidates, &
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! hard_min,total_min,rtt,tries,ft,qual,decoded
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@ -213,7 +213,7 @@ program jt65sim
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a=0.
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if(x.lt.3.0) then !Cutoff beyond x=3
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! a=sqrt(exp(-x*x)) !Gaussian
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a=sqrt(1.0/(1.0+x*x)) !Lorentzian
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a=sqrt(1.111/(1.0+x*x)-0.1) !Lorentzian
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call random_number(r1)
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phi1=twopi*r1
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z=a*cmplx(cos(phi1),sin(phi1))
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