subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, & mousedf,mousefqso,nagain,ndecdone,ndiskdat,nfshift,ndphi, & nfcal,nkeep,mcall3b,nsave,nxant,rmsdd,mycall,mygrid, & neme,ndepth,hiscall,hisgrid,nhsym,nfsample,nxpol,mode65) ! Processes timf2 data from Linrad to find and decode JT65 signals. parameter (MAXMSG=1000) !Size of decoded message list parameter (NSMAX=60*96000) parameter (NFFT=32768) real dd(4,NSMAX) real*4 ss(4,322,NFFT),savg(4,NFFT) 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) real*8 fcenter character*22 msg(MAXMSG) character*3 shmsg0(4) character mycall*12,hiscall*12,mygrid*6,hisgrid*6,grid*6,cp*1 integer indx(MAXMSG),nsiz(MAXMSG) logical done(MAXMSG) logical xpol character decoded*22,blank*22 real short(3,NFFT) !SNR dt ipol for potential shorthands real qphi(12) common/c3com/ mcall3a common/testcom/ifreq data blank/' '/ data shmsg0/'ATT','RO ','RRR','73 '/ data nfile/0/,nutc0/-999/,nid/0/,ip000/1/,ip001/1/,mousefqso0/-999/ save mcall3a=mcall3b mousefqso0=mousefqso xpol=(nxpol.ne.0) if(.not.xpol) ndphi=0 !### Should use AppDir! ### ! open(23,file='release/CALL3.TXT',status='unknown') open(23,file='CALL3.TXT',status='unknown') if(nutc.ne.nutc0) nfile=nfile+1 nutc0=nutc df=96000.0/NFFT !df = 96000/NFFT = 2.930 Hz if(nfsample.eq.95238) df=95238.1/NFFT ftol=0.010 !Frequency tolerance (kHz) dphi=idphi/57.2957795 foffset=0.001*(1270 + nfcal) !Offset from sync tone, plus CAL fqso=mousefqso + foffset - 0.5*(nfa+nfb) + nfshift !fqso at baseband (khz) 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*(fqso+0.001*mousedf) - ntol fb=1000.0*(fqso+0.001*mousedf) + ntol + 4*53.8330078 else !Wideband decode at all freqs fa=-1000*0.5*(nfb-nfa) + 1000*nfshift fb= 1000*0.5*(nfb-nfa) + 1000*nfshift endif ia=nint(fa/df) + 16385 ib=nint(fb/df) + 16385 ia=max(51,ia) ib=min(32768-51,ib) km=0 nkm=1 nz=n/8 freq0=-999. sync10=-999. fshort0=-999. syncshort0=-999. ntry=0 short=0. !Zero the whole short array jpz=1 if(xpol) jpz=4 do i=ia,ib !Search over freq range freq=0.001*(i-16385)*df ! Find the local base level for each polarization; update every 10 bins. if(mod(i-ia,10).eq.0) then do jp=1,jpz do ii=-50,50 iii=i+ii if(iii.ge.1 .and. iii.le.32768) then tavg(ii)=savg(jp,iii) else write(13,*) ,'Error in iii:',iii,ia,ib,fa,fb flush(13) go to 999 endif enddo call pctile(tavg,tmp,101,50,base(jp)) enddo endif ! Find max signal at this frequency smax=0. do jp=1,jpz if(savg(jp,i)/base(jp).gt.smax) then smax=savg(jp,i)/base(jp) jpmax=jp endif enddo if(smax.gt.1.1) then ! Look for JT65 sync patterns and shorthand square-wave patterns. call timer('ccf65 ',0) ! ssmax=4.0*(rmsdd/22.5)**2 ssmax=savg(jpmax,i) call ccf65(ss(1,1,i),nhsym,ssmax,sync1,ipol,jpz,dt,flipk, & syncshort,snr2,ipol2,dt2) call timer('ccf65 ',1) ! ########################### Search for Shorthand Messages ################# ! Is there a shorthand tone above threshold? thresh0=1.0 ! Use lower thresh0 at fQSO if(nqd.eq.1 .and. ntol.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*mode65*10.0*(11025.0/4096.0)/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.thresh0) then fshort=0.001*(i0-16385)*df noffset=0 if(nqd.eq.1) noffset=nint(1000.0*(fshort-fqso)-mousedf) if(abs(noffset).le.ntol) then ! Keep only the best candidate within ftol. !### NB: sync2 was not defined here! ! sync2=syncshort !### try this ??? if(fshort-fshort0.le.ftol .and. syncshort.gt.syncshort0 & .and. nkm.eq.2) km=km-1 if(fshort-fshort0.gt.ftol .or. & syncshort.gt.syncshort0) then if(km.lt.MAXMSG) km=km+1 sig(km,1)=nfile sig(km,2)=nutc sig(km,3)=fshort + 0.5*(nfa+nfb) 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 syncshort0=syncshort 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. ntol.le.100) thresh1=0. noffset=0 if(nqd.eq.1) noffset=nint(1000.0*(freq-fqso)-mousedf) if(sync1.gt.thresh1 .and. abs(noffset).le.ntol) 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) f00=(i-1)*df !Freq of detected sync tone (0-96000 Hz) ntry=ntry+1 if((nqd.eq.1 .and. ntry.ge.40) .or. & (nqd.eq.0 .and. ntry.ge.400)) then ! Too many calls to decode1a! write(*,*) '! Signal too strong, or suspect data? Decoding aborted.' write(13,*) 'Signal too strong, or suspect data? Decoding aborted.' call flush(13) go to 999 endif call timer('decode1a',0) ifreq=i ikHz=nint(freq+0.5*(nfa+nfb)-foffset)-nfshift idf=nint(1000.0*(freq+0.5*(nfa+nfb)-foffset-(ikHz+nfshift))) call decode1a(dd,newdat,f00,nflip,mode65,nfsample,xpol, & mycall,hiscall,hisgrid,neme,ndepth,nqd,dphi, & nutc,ikHz,idf,ipol,sync2,a,dt,pol,nkv,nhist,qual,decoded) dt=dt+0.8 !### empirical tweak call timer('decode1a',1) if(km.lt.MAXMSG) km=km+1 sig(km,1)=nfile sig(km,2)=nutc sig(km,3)=freq + 0.5*(nfa+nfb) 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)-nfshift mhz=fcenter ! ... +fadd ??? f0=mhz+0.001*nkHz ndf=nint(1000.0*(freq-foffset-(nkHz+nfshift))) 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 nwrite=nwrite+1 if(nxant.ne.0) then npol=npol-45 if(npol.lt.0) npol=npol+180 endif ! If Tx station's grid is in decoded message, compute optimum TxPol i1=index(decoded,' ') i2=index(decoded(i1+1:),' ') + i1 grid=' ' if(i2.ge.8 .and. i2.le.18) grid=decoded(i2+1:i2+4)//'mm' ntxpol=0 cp=' ' if(xpol) then if(grid(1:1).ge.'A' .and. grid(1:1).le.'R' .and. & grid(2:2).ge.'A' .and. grid(2:2).le.'R' .and. & grid(3:3).ge.'0' .and. grid(3:3).le.'9' .and. & grid(4:4).ge.'0' .and. grid(4:4).le.'9') then ntxpol=mod(npol-nint(2.0*dpol(mygrid,grid))+720,180) if(nxant.eq.0) then cp='H' if(ntxpol.gt.45 .and. ntxpol.le.135) cp='V' else cp='/' if(ntxpol.ge.90 .and. ntxpol.lt.180) cp='\\' endif endif endif if(ndphi.eq.0) then write(*,1010) nkHz,ndf,npol,nutc,dt,nsync2, & decoded,nkv,nqual,ntxpol,cp 1010 format('!',i3,i5,i4,i5.4,f5.1,i4,2x,a22,i4,i5,i5,1x,a1) else if(iloop.ge.1) qphi(iloop)=sig(k,10) write(*,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 write(*,1012) mousefqso,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(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,ftol,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) 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 mhz=fcenter !... +fadd ??? nkHz=nint(freq-foffset)-nfshift f0=mhz+0.001*nkHz ndf=nint(1000.0*(freq-foffset-(nkHz+nfshift))) 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 if(nxant.ne.0) then npol=npol-45 if(npol.lt.0) npol=npol+180 endif ! If Tx station's grid is in decoded message, compute optimum TxPol i1=index(decoded,' ') i2=index(decoded(i1+1:),' ') + i1 grid=' ' if(i2.ge.8 .and. i2.le.18) grid=decoded(i2+1:i2+4)//'mm' ntxpol=0 cp=' ' if(xpol) then if(grid(1:1).ge.'A' .and. grid(1:1).le.'R' .and. & grid(2:2).ge.'A' .and. grid(2:2).le.'R' .and. & grid(3:3).ge.'0' .and. grid(3:3).le.'9' .and. & grid(4:4).ge.'0' .and. grid(4:4).le.'9') then ntxpol=mod(npol-nint(2.0*dpol(mygrid,grid))+720,180) if(nxant.eq.0) then cp='H' if(ntxpol.gt.45 .and. ntxpol.le.135) cp='V' else cp='/' if(ntxpol.ge.90 .and. ntxpol.lt.180) cp='\\' endif endif endif write(26,1014) f0,ndf,ndf0,ndf1,ndf2,dt,npol,nsync1, & nsync2,nutc,decoded,nkv,nqual,nhist,cp write(21,1014) f0,ndf,ndf0,ndf1,ndf2,dt,npol,nsync1, & nsync2,nutc,decoded,nkv,nqual,nhist 1014 format(f8.3,i5,3i3,f5.1,i4,i3,i4,i5.4,2x,a22,3i3,1x,a1) endif endif j=j+nsiz(n) enddo write(26,1015) nutc 1015 format(39x,i4.4) call flush(21) call flush(26) call display(nkeep,ftol) ndecdone=2 999 close(23) ndphi=0 nagain=0 mcall3b=mcall3a return end subroutine map65a