mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-22 04:11:16 -05:00
526 lines
18 KiB
Fortran
526 lines
18 KiB
Fortran
subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
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mousedf,mousefqso,nagain,ndecdone,nfshift,ndphi,max_drift, &
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nfcal,nkeep,mcall3b,nsum,nsave,nxant,mycall,mygrid, &
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neme,ndepth,nstandalone,hiscall,hisgrid,nhsym,nfsample, &
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ndiskdat,nxpol,nmode)
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! Processes timf2 data from Linrad to find and decode JT65 signals.
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use wideband_sync
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use timer_module, only: timer
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parameter (MAXMSG=1000) !Size of decoded message list
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parameter (NSMAX=60*96000)
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real dd(4,NSMAX)
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real*4 ss(4,322,NFFT),savg(4,NFFT)
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real tavg(-50:50) !Temp for finding local base level
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real base(4) !Local basel level at 4 pol'ns
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real sig(MAXMSG,30) !Parameters of detected signals
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real a(5)
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real*8 fcenter
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character*22 msg(MAXMSG)
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character*3 shmsg0(4)
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character mycall*12,hiscall*12,mygrid*6,hisgrid*6,cp*1,cm*1
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integer indx(MAXMSG),nsiz(MAXMSG)
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logical done(MAXMSG)
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logical xpol,bq65,q65b_called
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logical candec(MAX_CANDIDATES)
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logical ldecoded
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character decoded*22,blank*22,cmode*2
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real short(3,NFFT) !SNR dt ipol for potential shorthands
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real qphi(12)
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type(candidate) :: cand(MAX_CANDIDATES)
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common/c3com/ mcall3a
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common/testcom/ifreq
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common/early/nhsym1,nhsym2,ldecoded(32768)
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data blank/' '/,cm/'#'/
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data shmsg0/'ATT','RO ','RRR','73 '/
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data nfile/0/,nutc0/-999/,nid/0/,ip000/1/,ip001/1/,mousefqso0/-999/
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save
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! Clean start for Q65 at early decode
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if(nhsym.eq.nhsym1 .or. nagain.ne.0) ldecoded=.false.
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nkhz_center=nint(1000.0*(fcenter-int(fcenter)))
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mfa=nfa-nkhz_center+48
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mfb=nfb-nkhz_center+48
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mode65=mod(nmode,10)
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if(mode65.eq.3) mode65=4
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mode_q65=nmode/10
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nts_jt65=2**(mode65-1) !JT65 tone separation factor
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nts_q65=2**(mode_q65-1) !Q65 tone separation factor
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xpol=(nxpol.ne.0)
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! No second decode for JT65?
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! if(nhsym.eq.nhsym2 .and. (nstandalone.eq.1 .or. ndiskdat.eq.0)) mode65=0
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if(nhsym.eq.nhsym2 .and. nagain.eq.0) mode65=0
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! print*,'=a',nhsym,nagain,mode65
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if(nagain.eq.0) then
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call timer('get_cand',0)
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call get_candidates(ss,savg,xpol,nhsym,mfa,mfb,nts_jt65,nts_q65,cand,ncand)
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call timer('get_cand',1)
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candec=.false.
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endif
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!###
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! do k=1,ncand
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! freq=cand(k)%f+nkhz_center-48.0-1.27046
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! ipk=cand(k)%indx
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! write(*,3010) nutc,k,db(cand(k)%snr),freq,cand(k)%xdt, &
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! cand(k)%ipol,cand(k)%iflip,ipk,ldecoded(ipk)
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!3010 format('=a',i5.4,i5,f8.2,f10.3,f8.2,2i3,i6,L4)
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! enddo
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!###
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nwrite_q65=0
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bq65=mode_q65.gt.0
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mcall3a=mcall3b
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mousefqso0=mousefqso
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if(.not.xpol) ndphi=0
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nsum=0
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!### Should use AppDir! ###
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open(23,file='CALL3.TXT',status='unknown')
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df=96000.0/NFFT !df = 96000/NFFT = 2.930 Hz
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if(nfsample.eq.95238) df=95238.1/NFFT
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ftol=0.010 !Frequency tolerance (kHz)
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dphi=idphi/57.2957795
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foffset=0.001*(1270 + nfcal) !Offset from sync tone, plus CAL
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fqso=mousefqso + foffset - 0.5*(nfa+nfb) + nfshift !fqso at baseband (khz)
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iloop=0
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2 if(ndphi.eq.1) dphi=30*iloop/57.2957795
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if(nutc.ne.nutc0) nfile=nfile+1
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nutc0=nutc
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do nqd=1,0,-1
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if(nqd.eq.1) then !Quick decode, at fQSO
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fa=1000.0*(fqso+0.001*mousedf) - ntol
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fb=1000.0*(fqso+0.001*mousedf) + ntol + 4*53.8330078
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else !Wideband decode at all freqs
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fa=-1000*0.5*(nfb-nfa) + 1000*nfshift
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fb= 1000*0.5*(nfb-nfa) + 1000*nfshift
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endif
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ia=nint(fa/df) + 16385
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ib=nint(fb/df) + 16385
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ia=max(51,ia)
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ib=min(32768-51,ib)
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km=0
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nkm=1
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nz=n/8
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freq0=-999.
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sync10=-999.
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fshort0=-999.
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syncshort0=-999.
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ntry=0
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short=0. !Zero the whole short array
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jpz=1
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if(xpol) jpz=4
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if(mode65.eq.0) go to 50
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! First steps for JT65 decoding
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do i=ia,ib !Search over freq range
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freq=0.001*(i-16385)*df
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! Find the local base level for each polarization; update every 10 bins.
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if(mod(i-ia,10).eq.0) then
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do jp=1,jpz
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do ii=-50,50
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iii=i+ii
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if(iii.ge.1 .and. iii.le.32768) then
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tavg(ii)=savg(jp,iii)
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else
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write(13,*) 'Error in iii:',iii,ia,ib,fa,fb
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flush(13)
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go to 900
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endif
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enddo
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call pctile(tavg,101,50,base(jp))
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enddo
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endif
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! Find max signal at this frequency
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smax=0.
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do jp=1,jpz
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if(savg(jp,i)/base(jp).gt.smax) then
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smax=savg(jp,i)/base(jp)
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jpmax=jp
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endif
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enddo
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if(smax.gt.1.1 .or. ia.eq.ib) then
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! Look for JT65 sync patterns and shorthand square-wave patterns.
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call timer('ccf65 ',0)
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! ssmax=smax
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ssmax=1.e30
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call ccf65(ss(1,1,i),nhsym,ssmax,sync1,ipol,jpz,dt, &
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flipk,syncshort,snr2,ipol2,dt2)
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if(dt.lt.-2.6 .or. dt.gt.2.5) sync1=-99.0 !###
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call timer('ccf65 ',1)
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if(mode65.eq.0) syncshort=-99.0 !If "No JT65", don't waste time
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! ########################### Search for Shorthand Messages #################
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! Is there a shorthand tone above threshold?
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thresh0=1.0
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! Use lower thresh0 at fQSO
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if(nqd.eq.1 .and. ntol.le.100) thresh0=0.
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if(syncshort.gt.thresh0) then
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! ### Do shorthand AFC here (or maybe after finding a pair?) ###
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short(1,i)=syncshort
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short(2,i)=dt2
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short(3,i)=ipol2
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! Check to see if lower tone of shorthand pair was found.
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do j=2,4
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i0=i-nint(j*mode65*10.0*(11025.0/4096.0)/df)
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! Should this be i0 +/- 1, or just i0?
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! Should we also insist that difference in DT be either 1.5 or -1.5 s?
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if(short(1,i0).gt.thresh0) then
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fshort=0.001*(i0-16385)*df
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noffset=0
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if(nqd.eq.1) noffset=nint(1000.0*(fshort-fqso)-mousedf)
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if(abs(noffset).le.ntol) then
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! Keep only the best candidate within ftol.
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!### NB: sync2 was not defined here!
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! sync2=syncshort !### try this ???
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if(fshort-fshort0.le.ftol .and. &
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syncshort.gt.syncshort0 .and. nkm.eq.2) km=km-1
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if(fshort-fshort0.gt.ftol .or. &
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syncshort.gt.syncshort0) then
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if(km.lt.MAXMSG) km=km+1
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sig(km,1)=nfile
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sig(km,2)=nutc
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sig(km,3)=fshort + 0.5*(nfa+nfb)
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sig(km,4)=syncshort
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sig(km,5)=dt2
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sig(km,6)=45*(ipol2-1)/57.2957795
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sig(km,7)=0
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sig(km,8)=snr2
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sig(km,9)=0
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sig(km,10)=0
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! sig(km,11)=rms0
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sig(km,12)=savg(ipol2,i)
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sig(km,13)=0
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sig(km,14)=0
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sig(km,15)=0
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sig(km,16)=0
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! sig(km,17)=0
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sig(km,18)=0
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msg(km)=shmsg0(j)
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fshort0=fshort
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syncshort0=syncshort
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nkm=2
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endif
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endif
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endif
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enddo
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endif
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! ########################### Search for Normal Messages ###########
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! Is sync1 above threshold?
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thresh1=1.0
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! Use lower thresh1 at fQSO
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if(nqd.eq.1 .and. ntol.le.100) thresh1=0.
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noffset=0
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if(nqd.ge.1) noffset=nint(1000.0*(freq-fqso)-mousedf)
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if(newdat.eq.1 .and. sync1.gt.-99.0) then
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sync1=thresh1+1.0
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noffset=0
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endif
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if(sync1.gt.thresh1 .and. abs(noffset).le.ntol) then
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! Keep only the best candidate within ftol.
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! (Am I deleting any good decodes by doing this?)
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if(freq-freq0.le.ftol .and. sync1.gt.sync10 .and. &
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nkm.eq.1) km=km-1
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if(freq-freq0.gt.ftol .or. sync1.gt.sync10) then
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nflip=nint(flipk)
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f00=(i-1)*df !Freq of detected sync tone (0-96000 Hz)
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ntry=ntry+1
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if((nqd.eq.1 .and. ntry.ge.40) .or. &
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(nqd.eq.0 .and. ntry.ge.400)) then
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! Too many calls to decode1a!
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write(*,*) '! Signal too strong, or suspect data? Decoding aborted.'
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write(13,*) 'Signal too strong, or suspect data? Decoding aborted.'
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call flush(13)
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go to 900
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endif
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call timer('decode1a',0)
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ifreq=i
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ikhz=nint(freq+0.5*(nfa+nfb)-foffset)-nfshift
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idf=nint(1000.0*(freq+0.5*(nfa+nfb)-foffset-(ikHz+nfshift)))
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call decode1a(dd,newdat,f00,nflip,mode65,nfsample, &
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xpol,mycall,hiscall,hisgrid,neme,ndepth,nqd,dphi, &
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ndphi,nutc,ikHz,idf,ipol,ntol,sync2, &
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a,dt,pol,nkv,nhist,nsum,nsave,qual,decoded)
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call timer('decode1a',1)
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! The case sync1=2.0 is just to make sure decode1a is called and bigfft done.
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if(mode65.ne.0 .and. sync1.ne.2.000000) then
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if(km.lt.MAXMSG) km=km+1
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sig(km,1)=nfile
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sig(km,2)=nutc
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sig(km,3)=freq + 0.5*(nfa+nfb)
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sig(km,4)=sync1
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sig(km,5)=dt
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sig(km,6)=pol
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sig(km,7)=flipk
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sig(km,8)=sync2
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sig(km,9)=nkv
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sig(km,10)=qual
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! sig(km,11)=idphi
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sig(km,12)=savg(ipol,i)
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sig(km,13)=a(1)
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sig(km,14)=a(2)
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sig(km,15)=a(3)
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sig(km,16)=a(4)
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! sig(km,17)=a(5)
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sig(km,18)=nhist
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msg(km)=decoded
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freq0=freq
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sync10=sync1
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nkm=1
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endif
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endif
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endif
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endif
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enddo !i=ia,ib
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50 if(nqd.eq.1) then
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nwrite=0
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if(mode65.eq.0) km=0
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do k=1,km
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decoded=msg(k)
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if(decoded.ne.' ') then
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nutc=sig(k,2)
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freq=sig(k,3)
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sync1=sig(k,4)
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dt=sig(k,5)
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npol=nint(57.2957795*sig(k,6))
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flip=sig(k,7)
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sync2=sig(k,8)
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nkv=sig(k,9)
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nqual=sig(k,10)
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! idphi=nint(sig(k,11))
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if(flip.lt.0.0) then
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do i=22,1,-1
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if(decoded(i:i).ne.' ') go to 8
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enddo
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stop 'Error in message format'
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8 if(i.le.18) decoded(i+2:i+4)='OOO'
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endif
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nkHz=nint(freq-foffset)-nfshift
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mhz=fcenter ! ... +fadd ???
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f0=mhz+0.001*nkHz
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ndf=nint(1000.0*(freq-foffset-(nkHz+nfshift)))
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nsync1=sync1
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s2db=10.0*log10(sync2) - 40 !### empirical ###
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nsync2=nint(s2db)
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if(decoded(1:4).eq.'RO ' .or. decoded(1:4).eq.'RRR ' .or. &
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decoded(1:4).eq.'73 ') then
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nsync2=nint(1.33*s2db + 2.0)
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endif
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nwrite=nwrite+1
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if(nxant.ne.0) then
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npol=npol-45
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if(npol.lt.0) npol=npol+180
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endif
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call txpol(xpol,decoded,mygrid,npol,nxant,ntxpol,cp)
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if(ndphi.eq.0) then
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write(*,1010) nkHz,ndf,npol,nutc,dt,nsync2, &
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cm,decoded,nkv,nqual,ntxpol,cp
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1010 format('!',i3,i5,i4,i6.4,f5.1,i5,1x,a1,1x,a22,i2,i5,i5,1x,a1)
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else
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if(iloop.ge.1) qphi(iloop)=sig(k,10)
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write(*,1010) nkHz,ndf,npol,nutc,dt,nsync2, &
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cm,decoded,nkv,nqual,30*iloop
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write(27,1011) 30*iloop,nkHz,ndf,npol,nutc, &
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dt,sync2,nkv,nqual,cm,decoded
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1011 format(i3,i4,i5,i4,i6.4,1x,f5.1,f7.1,i3,i5,a1,1x,a22)
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endif
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endif
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enddo ! k=1,km
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if(bq65) then
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q65b_called=.false.
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do icand=1,ncand
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if(cand(icand)%iflip.ne.0) cycle !Keep only Q65 candidates
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freq=cand(icand)%f+nkhz_center-48.0-1.27046
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nhzdiff=nint(1000.0*(freq-mousefqso)-mousedf) - nfcal
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! Now looking for "quick decode" (nqd=1) candidates at cursor freq +/- ntol.
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if(nqd.eq.1 .and. abs(nhzdiff).gt.ntol) cycle
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ikhz=mousefqso
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q65b_called=.true.
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f0=cand(icand)%f
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call timer('q65b ',0)
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call q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf, &
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ntol,xpol,mycall,mygrid, hiscall,hisgrid,mode_q65,f0,fqso, &
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newdat,nagain,max_drift,nhsym,idec)
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call timer('q65b ',1)
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if(idec.ge.0) candec(icand)=.true.
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enddo
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if(.not.q65b_called) then
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freq=mousefqso + 0.001*mousedf
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ikhz=mousefqso
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f0=freq - (nkhz_center-48.0-1.27046) !### ??? ###
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call timer('q65b ',0)
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call q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf, &
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ntol,xpol,mycall,mygrid,hiscall,hisgrid,mode_q65,f0,fqso, &
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newdat,nagain,max_drift,nhsym,idec)
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call timer('q65b ',1)
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endif
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endif
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if(nwrite.eq.0 .and. nwrite_q65.eq.0) then
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write(*,1012) mousefqso,nutc
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1012 format('!',i3,9x,i6.4,' ')
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endif
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endif !nqd.eq.1
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if(ndphi.eq.1 .and.iloop.lt.12) then
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iloop=iloop+1
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go to 2
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endif
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if(ndphi.eq.1 .and.iloop.eq.12) call getdphi(qphi)
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if(nqd.eq.1) then
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call sec0(1,tdec)
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write(*,1013) nsum,nsave,nstandalone,nhsym,tdec
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1013 format('<QuickDecodeDone>',3i4,i6,f6.2)
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flush(6)
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open(16,file='tquick.dat',status='unknown',access='append')
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write(16,1016) nutc,tdec
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1016 format(i4.4,f7.1)
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close(16)
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endif
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call sec0(1,tsec0)
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if(nhsym.eq.nhsym1 .and. tsec0.gt.3.0) go to 700
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if(nqd.eq.1 .and. nagain.eq.1) go to 900
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if(nqd.eq.0 .and. bq65) then
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! Do the wideband Q65 decode
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do icand=1,ncand
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if(cand(icand)%iflip.ne.0) cycle !Do only Q65 candidates here
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if(candec(icand)) cycle !Skip if already decoded
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freq=cand(icand)%f+nkhz_center-48.0-1.27046
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! If here at nqd=1, do only candidates at mousefqso +/- ntol
|
|
if(nqd.eq.1 .and. abs(freq-mousefqso).gt.0.001*ntol) cycle
|
|
ikhz=nint(freq)
|
|
f0=cand(icand)%f
|
|
call timer('q65b ',0)
|
|
call q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf,ntol, &
|
|
xpol,mycall,mygrid,hiscall,hisgrid,mode_q65,f0,fqso,newdat, &
|
|
nagain,max_drift,nhsym,idec)
|
|
call timer('q65b ',1)
|
|
if(idec.ge.0) candec(icand)=.true.
|
|
enddo ! icand
|
|
endif
|
|
call sec0(1,tsec0)
|
|
|
|
enddo ! nqd
|
|
|
|
! 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?)
|
|
700 call trimlist(sig,km,ftol,indx,nsiz,nz)
|
|
done(1:km)=.false.
|
|
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
|
|
|
|
s2db=10.0*log10(sync2) - 40 !### empirical ###
|
|
nsync2=nint(s2db)
|
|
if(decoded(1:4).eq.'RO ' .or. decoded(1:4).eq.'RRR ' .or. &
|
|
decoded(1:4).eq.'73 ') then
|
|
nsync2=nint(1.33*s2db + 2.0)
|
|
endif
|
|
|
|
if(nxant.ne.0) then
|
|
npol=npol-45
|
|
if(npol.lt.0) npol=npol+180
|
|
endif
|
|
|
|
call txpol(xpol,decoded,mygrid,npol,nxant,ntxpol,cp)
|
|
|
|
cmode='#A'
|
|
if(mode65.eq.2) cmode='#B'
|
|
if(mode65.eq.4) cmode='#C'
|
|
write(26,1014) f0,ndf,ndf0,ndf1,ndf2,dt,npol,nsync1, &
|
|
nsync2,nutc,decoded,cp,cmode
|
|
1014 format(f8.3,i5,3i3,f5.1,i4,i3,i4,i5.4,4x,a22,2x,a1,3x,a2)
|
|
write(21,1100) f0,ndf,dt,npol,nsync2,nutc,decoded,cp, &
|
|
cmode(1:1),cmode(2:2)
|
|
1100 format(f8.3,i5,f5.1,2i4,i5.4,2x,a22,2x,a1,3x,a1,1x,a1)
|
|
endif
|
|
|
|
endif
|
|
j=j+nsiz(n)
|
|
enddo !i=1,km
|
|
|
|
write(26,1015) nutc
|
|
1015 format(37x,i6.4,' ')
|
|
call flush(21)
|
|
call flush(26)
|
|
call display(nkeep,ftol)
|
|
ndecdone=2
|
|
|
|
900 close(23)
|
|
ndphi=0
|
|
mcall3b=mcall3a
|
|
|
|
return
|
|
end subroutine map65a
|