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Merge branch 'develop' of bitbucket.org:k1jt/wsjtx into develop

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This commit is contained in:
Joe Taylor 2020-04-20 14:28:43 -04:00
commit b847d6b32b
2 changed files with 99 additions and 76 deletions
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173
lib/fsk4hf/wspr4d.f90
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@ -84,84 +84,107 @@ program wspr4d
do icand=1,ncand do icand=1,ncand
fc0=candidates(icand,1) fc0=candidates(icand,1)
xsnr=candidates(icand,2) xsnr=candidates(icand,2)
xmax=-1e32
smax=0.0
fc1=fc0-1.50*(fs/416.0)
do if=-20,20
df=if*0.04
fc=fc1+df
do is=300,450,5
call coherent_sync(c2,is,fc,1,sync)
if(sync.gt.smax) then
fc2=fc
isbest=is
smax=sync
endif
enddo
enddo
write(*,*) ifile,icand,-1.50*(fs/416),fc1,fc2,isbest,smax
istart=isbest
fcest=fc2
!
!******** genie sync
! istart=375
! fcest=0.0-1.50*(fs/416)
!
cframe=c2(istart:istart+103*416-1)
call downsample4(cframe,fcest,cd)
s2=sum(cd*conjg(cd))/(16*103)
cd=cd/sqrt(s2)
call get_wspr4_bitmetrics(cd,bitmetrics,badsync)
! if(badsync) cycle
hbits=0 do isync=0,1
where(bitmetrics(:,1).ge.0) hbits=1
ns1=count(hbits( 1: 8).eq.(/0,0,0,1,1,0,1,1/)) del=1.5*fs/416.0
ns2=count(hbits( 67: 74).eq.(/0,1,0,0,1,1,1,0/)) if(isync.eq.0) then
ns3=count(hbits(133:140).eq.(/1,1,1,0,0,1,0,0/)) fc1=fc0-del
ns4=count(hbits(199:206).eq.(/1,0,1,1,0,0,0,1/)) is0=375
nsync_qual=ns1+ns2+ns3+ns4 ishw=300
dis=50
ifhw=10
df=.1
else if(isync.eq.1) then
fc1=fc2
is0=isbest
ishw=100
dis=10
ifhw=10
df=.02
endif
smax=0.0
do if=-ifhw,ifhw
fc=fc1+df*if
do istart=max(1,is0-ishw),is0+ishw,dis
call coherent_sync(c2,istart,fc,1,sync,data_aided,kstart,tones)
if(sync.gt.smax) then
fc2=fc
isbest=istart
smax=sync
endif
enddo
enddo
write(*,*) ifile,icand,isync,fc1+del,fc2+del,isbest,smax
enddo
if(smax .lt. 100.0 ) cycle
idecoded=0
do ijitter=0,4
if(idecoded.eq.1) exit
if(ijitter.eq.1) ioffset=20
if(ijitter.eq.2) ioffset=-20
if(ijitter.eq.3) ioffset=40
if(ijitter.eq.4) ioffset=-40
is0=isbest+ioffset
if(is0.lt.0) cycle
cframe=c2(is0:is0+103*416-1)
call downsample4(cframe,fc2,cd)
s2=sum(cd*conjg(cd))/(16*103)
cd=cd/sqrt(s2)
call get_wspr4_bitmetrics(cd,bitmetrics,badsync)
hbits=0
where(bitmetrics(:,1).ge.0) hbits=1
ns1=count(hbits( 1: 8).eq.(/0,0,0,1,1,0,1,1/))
ns2=count(hbits( 67: 74).eq.(/0,1,0,0,1,1,1,0/))
ns3=count(hbits(133:140).eq.(/1,1,1,0,0,1,0,0/))
ns4=count(hbits(199:206).eq.(/1,0,1,1,0,0,0,1/))
nsync_qual=ns1+ns2+ns3+ns4
! if(nsync_qual.lt. 20) cycle ! if(nsync_qual.lt. 20) cycle
scalefac=2.83 scalefac=2.83
llra( 1: 58)=bitmetrics( 9: 66, 1) llra( 1: 58)=bitmetrics( 9: 66, 1)
llra( 59:116)=bitmetrics( 75:132, 1) llra( 59:116)=bitmetrics( 75:132, 1)
llra(117:174)=bitmetrics(141:198, 1) llra(117:174)=bitmetrics(141:198, 1)
llra=scalefac*llra llra=scalefac*llra
llrb( 1: 58)=bitmetrics( 9: 66, 2) llrb( 1: 58)=bitmetrics( 9: 66, 2)
llrb( 59:116)=bitmetrics( 75:132, 2) llrb( 59:116)=bitmetrics( 75:132, 2)
llrb(117:174)=bitmetrics(141:198, 2) llrb(117:174)=bitmetrics(141:198, 2)
llrb=scalefac*llrb llrb=scalefac*llrb
llrc( 1: 58)=bitmetrics( 9: 66, 3) llrc( 1: 58)=bitmetrics( 9: 66, 3)
llrc( 59:116)=bitmetrics( 75:132, 3) llrc( 59:116)=bitmetrics( 75:132, 3)
llrc(117:174)=bitmetrics(141:198, 3) llrc(117:174)=bitmetrics(141:198, 3)
llrc=scalefac*llrc llrc=scalefac*llrc
apmask=0 apmask=0
max_iterations=40 max_iterations=40
do itry=3,1,-1 do itry=3,1,-1
if(itry.eq.1) llr=llra if(itry.eq.1) llr=llra
if(itry.eq.2) llr=llrb if(itry.eq.2) llr=llrb
if(itry.eq.3) llr=llrc if(itry.eq.3) llr=llrc
nhardbp=0 nhardbp=0
nhardosd=0 nhardosd=0
call bpdecode174_74(llr,apmask,max_iterations,message,cw,nhardbp,niterations) dmin=0.0
Keff=64 call bpdecode174_74(llr,apmask,max_iterations,message,cw,nhardbp,niterations)
if(nhardbp.lt.0) call osd174_74(llr,Keff,apmask,5,message,cw,nhardosd,dmin) Keff=64
if(nhardbp.ge.0 .or. nhardosd.ge.0) then if(nhardbp.lt.0) call osd174_74(llr,Keff,apmask,5,message,cw,nhardosd,dmin)
write(c77,'(50i1)') message if(nhardbp.ge.0 .or. nhardosd.ge.0) then
c77(51:77)='000000000000000000000110000' write(c77,'(50i1)') message
call unpack77(c77,0,msg,unpk77_success) c77(51:77)='000000000000000000000110000'
if(unpk77_success .and. index(msg,'K9AN').gt.0) then call unpack77(c77,0,msg,unpk77_success)
ngood=ngood+1 if(unpk77_success .and. index(msg,'K9AN').gt.0) then
write(*,1100) ifile,fc0,xsnr,msg(1:14),itry,nhardbp,nhardosd,dmin idecoded=1
1100 format(i5,2x,f8.2,2x,f8.2,2x,a14,i4,i4,i4,f7.2) ngood=ngood+1
exit write(*,1100) ifile,xsnr,isbest/375.0-1.0,1500.0+fc2+del,msg(1:14),itry,nhardbp,nhardosd,dmin,ijitter
else 1100 format(i5,2x,f6.1,2x,f6.2,2x,f8.2,2x,a14,i4,i4,i4,f7.2,i6)
cycle exit
else
cycle
endif
endif endif
endif enddo ! metrics
enddo enddo ! istart jitter
enddo !candidate list enddo !candidate list
enddo !files enddo !files
nfiles=nargs-iarg+1 nfiles=nargs-iarg+1
@ -269,7 +292,7 @@ subroutine coherent_sync(cd0,i0,f0,itwk,sync)
if(npts.le.32) then if(npts.le.32) then
z4=0. z4=0.
else else
z4=sum(cd0(i4:i4+2*npts-1)*conjg(csync2(1:npts))) z4=sum(cd0(i4:i4+npts-1)*conjg(csync2(1:npts)))
endif endif
endif endif
@ -352,7 +375,7 @@ subroutine getcandidate4(c,npts,fs,fa,fb,ncand,candidates)
(bigspec(i).gt.1.15).and.ncand.lt.100) then (bigspec(i).gt.1.15).and.ncand.lt.100) then
ncand=ncand+1 ncand=ncand+1
candidates(ncand,1)=df*(i-NH2) candidates(ncand,1)=df*(i-NH2)
candidates(ncand,2)=10*log10(bigspec(i)-1)-26.0 candidates(ncand,2)=10*log10(bigspec(i)-1)-28.5
endif endif
enddo enddo
return return

2
lib/fsk4hf/wspr4sim.f90
View File

@ -65,7 +65,7 @@ program wspr4sim
endif endif
write(*,*) write(*,*)
write(*,'(a17)') 'Channel symbols: ' write(*,'(a17)') 'Channel symbols: '
write(*,'(76i1)') itone write(*,'(10i1)') itone
write(*,*) write(*,*)
call sgran() call sgran()