WSJT-X/map65a.F90

386 lines
13 KiB
Fortran
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subroutine map65a(newdat)
! Processes timf2 data from Linrad to find and decode JT65 signals.
parameter (MAXMSG=1000) !Size of decoded message list
real tavg(-50:50) !Temp for finding local base level
real base(4) !Local basel level at 4 pol'ns
real tmp (200) !Temp storage for pctile sorting
real sig(MAXMSG,30) !Parameters of detected signals
real a(5)
character*22 msg(MAXMSG)
character*3 shmsg0(4),shmsg
integer indx(MAXMSG),nsiz(MAXMSG)
logical done(MAXMSG)
character decoded*22,blank*22
include 'spcom.f90'
real short(3,NFFT) !SNR dt ipol for potential shorthands
real qphi(12)
include 'gcom2.f90'
include 'datcom.f90'
data blank/' '/
data shmsg0/'ATT','RO ','RRR','73 '/
data nfile/0/,nutc0/-999/,nid/0/,ip000/1/,ip001/1/,mousefqso0/-999/
save
if(mousefqso.ne.mousefqso0 .and. nagain.eq.1) newspec=2
mousefqso0=mousefqso
nfoffset=nint(1000*(fcenter-144.125d0))
mfqso=mousefqso - nfoffset
rewind 11
rewind 12
if(nrw26.ne.0) then
endfile (26) !Compiler bug? Don't write "end file 26" !!!
rewind 26
nrw26=0
endif
#ifdef CVF
open(23,file='CALL3.TXT',status='unknown',share='denynone')
#else
open(23,file='CALL3.TXT',status='unknown')
#endif
if(nutc.ne.nutc0) nfile=nfile+1
nutc0=nutc
nutcdata=nutc
df=96000.0/NFFT !df = 96000/NFFT = 2.930 Hz
ftol=0.020 !Frequency tolerance (kHz)
foffset=0.001*(1270 + nfcal)
fselect=mfqso + foffset
dphi=idphi/57.2957795
do i=12,3,-1
if(hiscall(i:i).ne.' ') go to 1
enddo
i=0
1 len_hiscall=i
iloop=0
2 if(ndphi.eq.1) dphi=30*iloop/57.2957795
do nqd=1,0,-1
if(nqd.eq.1) then !Quick decode, at fQSO
fa=1000.0*(fselect+0.001*mousedf-100.0) - dftolerance
fb=1000.0*(fselect+0.001*mousedf-100.0) + dftolerance + 4*53.8330078
ia=nint((fa+23000.0)/df + 1.0) ! 23000 = 48000 - 25000
ib=nint((fb+23000.0)/df + 1.0)
else !Wideband decode at all freqs
fa=1000*(nfa-100)
fb=1000*(nfb-100)
ia=nint((fa+23000.0)/df + 1.0) ! 23000 = 48000 - 25000
ib=nint((fb+23000.0)/df + 1.0)
endif
km=0
nkm=1
nz=n/8
do i=1,NFFT
short(1,i)=0.
short(2,i)=0.
short(3,i)=0.
enddo
freq0=-999.
sync10=-999.
fshort0=-999.
sync20=-999.
ntry=0
do i=ia,ib !Search over freq range
call sleep_msec(0)
freq=0.001*((i-1)*df - 23000) + 100.0
! Find the local base level for each polarization; update every 10 bins.
if(mod(i-ia,10).eq.0) then
do jp=1,4
do ii=-50,50
tavg(ii)=savg(jp,i+ii)
enddo
call pctile(tavg,tmp,101,50,base(jp))
enddo
bmax=max(base(1),base(2),base(3),base(4))
endif
! Do not process extremely strong signals
if(nqd.eq.0 .and. bmax.gt.1000.0) go to 70
! Find max signal at this frequency
smax=0.
do jp=1,4
if(savg(jp,i)/base(jp).gt.smax) smax=savg(jp,i)/base(jp)
enddo
if(smax.gt.1.1) then
ntry=ntry+1
! Look for JT65 sync patterns and shorthand square-wave patterns.
call ccf65(ss(1,1,i),nhsym,sync1,ipol,dt,flipk, &
syncshort,snr2,ipol2,dt2)
! ########################### Search for Shorthand Messages #################
shmsg=' '
! Is there a shorthand tone above threshold?
thresh0=1.0
! Use lower thresh0 at fQSO
if(nqd.eq.1 .and. dftolerance.le.100) thresh0=0.
if(syncshort.gt.thresh0) then
! ### Do shorthand AFC here (or maybe after finding a pair?) ###
short(1,i)=syncshort
short(2,i)=dt2
short(3,i)=ipol2
! Check to see if lower tone of shorthand pair was found.
do j=2,4
i0=i-nint(j*53.8330078/df)
! Should this be i0 +/- 1, or just i0?
! Should we also insist that difference in DT be either 1.5 or -1.5 s?
if(short(1,i0).gt.1.0) then
fshort=0.001*((i0-1)*df - 23000) + 100.0
noffset=0
if(nqd.eq.1) noffset=nint(1000.0* &
(fshort-foffset-mfqso)-mousedf)
if(abs(noffset).le.dftolerance) then
! Keep only the best candidate within ftol.
!### NB: sync2 was not defined here!
sync2=syncshort !### try this ???
if(fshort-fshort0.le.ftol .and. sync2.gt.sync20 &
.and. nkm.eq.2) km=km-1
if(fshort-fshort0.gt.ftol .or. &
sync2.gt.sync20) then
km=km+1
sig(km,1)=nfile
sig(km,2)=nutc
sig(km,3)=fshort
sig(km,4)=syncshort
sig(km,5)=dt2
sig(km,6)=45*(ipol2-1)/57.2957795
sig(km,7)=0
sig(km,8)=snr2
sig(km,9)=0
sig(km,10)=0
! sig(km,11)=rms0
sig(km,12)=savg(ipol2,i)
sig(km,13)=0
sig(km,14)=0
sig(km,15)=0
sig(km,16)=0
! sig(km,17)=0
sig(km,18)=0
msg(km)=shmsg0(j)
fshort0=fshort
sync20=sync2
nkm=2
endif
endif
endif
enddo
endif
! ########################### Search for Normal Messages ###########
! Is sync1 above threshold?
thresh1=1.0
! Use lower thresh1 at fQSO
if(nqd.eq.1 .and. dftolerance.le.100) thresh1=0.
noffset=0
if(nqd.eq.1) noffset=nint(1000.0*(freq-foffset-mfqso)-mousedf)
if(sync1.gt.thresh1 .and. abs(noffset).le.dftolerance) then
! Keep only the best candidate within ftol.
! (Am I deleting any good decodes by doing this?)
if(freq-freq0.le.ftol .and. sync1.gt.sync10 .and. &
nkm.eq.1) km=km-1
if(freq-freq0.gt.ftol .or. sync1.gt.sync10) then
nflip=nint(flipk)
call decode1a(id(1,1,kbuf),newdat,freq,nflip, &
mycall,hiscall,hisgrid,neme,ndepth,nqd,dphi,ndphi, &
ipol,sync2,a,dt,pol,nkv,nhist,qual,decoded)
! If hiscall or hisgrid is in decoded message, save the pol'n angle.
i1=index(decoded,hiscall(1:len_hiscall))
i2=index(decoded,hisgrid(1:4))
if(i1.ge.5 .or. i2.ge.9) then
nhispol=nint(57.2957795*pol)
endif
km=km+1
sig(km,1)=nfile
sig(km,2)=nutc
sig(km,3)=freq
sig(km,4)=sync1
sig(km,5)=dt
sig(km,6)=pol
sig(km,7)=flipk
sig(km,8)=sync2
sig(km,9)=nkv
sig(km,10)=qual
! sig(km,11)=idphi
sig(km,12)=savg(ipol,i)
sig(km,13)=a(1)
sig(km,14)=a(2)
sig(km,15)=a(3)
sig(km,16)=a(4)
! sig(km,17)=a(5)
sig(km,18)=nhist
msg(km)=decoded
freq0=freq
sync10=sync1
nkm=1
endif
endif
endif
70 continue
enddo
if(nqd.eq.1) then
nwrite=0
do k=1,km
decoded=msg(k)
if(decoded.ne.' ') then
nutc=sig(k,2)
freq=sig(k,3)
sync1=sig(k,4)
dt=sig(k,5)
npol=nint(57.2957795*sig(k,6))
flip=sig(k,7)
sync2=sig(k,8)
nkv=sig(k,9)
nqual=sig(k,10)
! idphi=nint(sig(k,11))
if(flip.lt.0.0) then
do i=22,1,-1
if(decoded(i:i).ne.' ') go to 8
enddo
stop 'Error in message format'
8 if(i.le.18) decoded(i+2:i+4)='OOO'
endif
nkHz=nint(freq-foffset) + nfoffset
f0=144.0+0.001*nkHz
ndf=nint(1000.0*(freq-foffset-nkHz+nfoffset))
! ndf0=nint(a(1))
! ndf1=nint(a(2))
! ndf2=nint(a(3))
nsync1=sync1
nsync2=nint(10.0*log10(sync2)) - 40 !### empirical ###
if(decoded(1:4).eq.'RO ' .or. decoded(1:4).eq.'RRR ' .or. &
decoded(1:4).eq.'73 ') nsync2=nsync2-6
nw=0 !### Fix this! ###
nwrite=nwrite+1
if(ndphi.eq.0) then
write(11,1010) nkHz,ndf,npol,nutc,dt,nsync2,decoded,nkv,nqual
1010 format(i3,i5,i4,i5.4,f5.1,i4,2x,a22,i5,i4,i4)
else
if(iloop.ge.1) qphi(iloop)=sig(k,10)
write(11,1010) nkHz,ndf,npol,nutc,dt,nsync2,decoded,nkv, &
nqual,30*iloop
write(27,1011) 30*iloop,nkHz,ndf,npol,nutc, &
dt,sync2,nkv,nqual,decoded
1011 format(i3,i4,i5,i4,i5.4,f5.1,f7.1,i3,i5,2x,a22)
endif
endif
enddo
if(nwrite.eq.0) then
nfqso=mfqso + nfoffset
write(11,1012) nfqso,nutc
1012 format(i3,9x,i5.4)
endif
endif
if(ndphi.eq.1 .and.iloop.lt.12) then
iloop=iloop+1
go to 2
endif
if(ndphi.eq.1 .and.iloop.eq.12) call getdphi(qphi)
if(nqd.eq.1) then
write(11,*) '$EOF'
call flushqqq(11)
ndecdone=1
t2=sec_midn()
endif
if(nagain.eq.1) go to 999
enddo
! Trim the list and produce a sorted index and sizes of groups.
! (Should trimlist remove all but best SNR for given UTC and message content?)
call trimlist(sig,km,indx,nsiz,nz)
do i=1,km
done(i)=.false.
enddo
j=0
ilatest=-1
do n=1,nz
ifile0=0
do m=1,nsiz(n)
i=indx(j+m)
ifile=sig(i,1)
if(ifile.gt.ifile0 .and.msg(i).ne.blank) then
ilatest=i
ifile0=ifile
endif
enddo
i=ilatest
if(i.ge.1) then
if(.not.done(i)) then
done(i)=.true.
nutc=sig(i,2)
freq=sig(i,3)
sync1=sig(i,4)
dt=sig(i,5)
npol=nint(57.2957795*sig(i,6))
flip=sig(i,7)
sync2=sig(i,8)
nkv=sig(i,9)
nqual=min(sig(i,10),10.0)
! rms0=sig(i,11)
nsavg=sig(i,12) !Was used for diagnostic ...
do k=1,5
a(k)=sig(i,12+k)
enddo
nhist=sig(i,18)
decoded=msg(i)
if(flip.lt.0.0) then
do i=22,1,-1
if(decoded(i:i).ne.' ') go to 10
enddo
stop 'Error in message format'
10 if(i.le.18) decoded(i+2:i+4)='OOO'
endif
nkHz=nint(freq-foffset) + nfoffset
f0=144.0+0.001*nkHz
ndf=nint(1000.0*(freq-foffset-nkHz+nfoffset))
ndf0=nint(a(1))
ndf1=nint(a(2))
ndf2=nint(a(3))
nsync1=sync1
nsync2=nint(10.0*log10(sync2)) - 40 !### empirical ###
if(decoded(1:4).eq.'RO ' .or. decoded(1:4).eq.'RRR ' .or. &
decoded(1:4).eq.'73 ') nsync2=nsync2-6
write(26,1014) f0,ndf,ndf0,ndf1,ndf2,dt,npol,nsync1, &
nsync2,nutc,decoded,nkv,nqual,nhist
write(21,1014) f0,ndf,ndf0,ndf1,ndf2,dt,npol,nsync1, &
nsync2,nutc,decoded,nkv,nqual,nhist
1014 format(f7.3,i5,3i3,f5.1,i5,i3,i4,i5.4,2x,a22,3i3)
endif
endif
j=j+nsiz(n)
enddo
write(26,1015) nutc
1015 format(39x,i4.4)
call flushqqq(26)
call display(nkeep,ncsmin)
ndecdone=2
if(nsave.gt.0 .and. ndiskdat.eq.0) call savetf2(id(1,1,kbuf),nsave, &
ntime,nutc,savedir)
999 close(23)
ndphi=0
if(kbuf.eq.1) kkdone=60*96000
if(kbuf.eq.2 .or. ndiskdat.eq.1) kkdone=0
kk=kkdone
nagain=0
return
end subroutine map65a