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https://github.com/saitohirga/WSJT-X.git
synced 2025-03-20 19:19:02 -04:00
Allow q65sim toi generate multiple signals.
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Joe Taylor
parent
37cd5b3ede
commit
6877a87fe4
@ -8,6 +8,7 @@ program q65sim
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type(hdr) h !Header for .wav file
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integer*2 iwave(NMAX) !Generated waveform
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integer itone(85) !Channel symbols (values 0-65)
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integer ntone(85,10) !Channel symbols for up to 10 messages
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integer y(63) !Codeword
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integer istart !averaging compatible start seconds
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integer imins !minutes for 15s period timestamp
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@ -18,18 +19,19 @@ program q65sim
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complex cspread(0:NMAX-1) !Complex amplitude for Rayleigh fading
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complex z
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real*8 f0,dt,twopi,phi,dphi,baud,fsample,freq
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character msg*37,fname*17,csubmode*1,arg*12
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character msgsent*37
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character fname*17,csubmode*1,arg*12,c2*2
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character*37 msg,msgsent,imsg(10)
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nargs=iargc()
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if(nargs.ne.10) then
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print*,'Usage: q65sim "msg" A-E freq fDop DT f1 Stp TRp Nfile SNR'
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print*,'Example: q65sim "K1ABC W9XYZ EN37" A 1500 0.0 0.0 0.0 1 60 1 -26'
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if(nargs.ne.11) then
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print*,'Usage: q65sim "msg" A-E freq fDop DT f1 Stp TRp Nsig Nfile SNR'
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print*,'Example: q65sim "K1ABC W9XYZ EN37" A 1500 0.0 0.0 0.0 1 60 1 1 -26'
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print*,'Example: q65sim "ST" A 1500 0.0 0.0 0.0 1 60 1 -26'
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print*,' fDop = Doppler spread'
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print*,' f1 = Drift or Doppler rate (Hz/min)'
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print*,' Stp = Step size (Hz)'
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print*,' Stp = 0 implies no Doppler tracking'
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print*,' Nsig = number of generated signals, 1 - 10'
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print*,' Creates filenames which increment to permit averaging in first period'
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print*,' If msg = ST program produces a single tone at freq'
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go to 999
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@ -50,8 +52,10 @@ program q65sim
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call getarg(8,arg)
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read(arg,*) ntrperiod
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call getarg(9,arg)
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read(arg,*) nfiles
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read(arg,*) nsig
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call getarg(10,arg)
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read(arg,*) nfiles
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call getarg(11,arg)
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read(arg,*) snrdb
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if(ntrperiod.eq.15) then
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@ -79,22 +83,39 @@ program q65sim
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nsym=85 !Number of channel symbols
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mode65=2**(ichar(csubmode) - ichar('A'))
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ichk=0
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call genq65(msg,ichk,msgsent,itone,i3,n3)
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imsg(1)=msg
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if(nsig.ge.2) then
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i0=index(msg,' ')
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i0=i0 + index(msg(i0+1:),' ')-2
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do i=1,nsig
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c2=char(ichar('A')+i-1)//char(ichar('A')+i-1)
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imsg(i)=msg(1:i0-1)//c2//msg(i0+2:)
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enddo
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endif
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j=0
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do i=1,85
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if(itone(i).gt.0) then
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j=j+1
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y(j)=itone(i)-1
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endif
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ichk=0
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do i=1,nsig
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msg=imsg(i)
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call genq65(msg,ichk,msgsent,itone,i3,n3)
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ntone(:,i)=itone
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enddo
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write(*,1001) y(1:13),y(1:13)
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if(nsig.eq.1) then
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j=0
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do i=1,85
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if(itone(i).gt.0) then
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j=j+1
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y(j)=itone(i)-1
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endif
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enddo
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write(*,1001) y(1:13),y(1:13)
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1001 format('Generated message'/'6-bit: ',13i3/'binary: ',13b6.6)
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write(*,1002) y
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write(*,1002) y
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1002 format(/'Codeword:'/(20i3))
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write(*,1003) itone
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write(*,1003) itone
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1003 format(/'Channel symbols:'/(20i3))
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endif
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baud=12000.d0/nsps !Keying rate (6.67 baud fot 15-s sequences)
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h=default_header(12000,npts)
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@ -116,43 +137,53 @@ program q65sim
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open(10,file=trim(fname),access='stream',status='unknown')
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xnoise=0.
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cdat=0.
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if(snrdb.lt.90) then
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do i=1,npts
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xnoise(i)=gran() !Generate gaussian noise
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enddo
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endif
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cdat=0.
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bandwidth_ratio=2500.0/6000.0
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sig=sqrt(2*bandwidth_ratio)*10.0**(0.05*snrdb)
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if(snrdb.gt.90.0) sig=1.0
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write(*,1020) ifile,ntrperiod,f0,csubmode,snrdb,fspread,xdt,f1,nstp,trim(msgsent)
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1020 format(i4,i6,f7.1,2x,a1,2x,f5.1,1x,f6.2,2f6.1,i4,2x,a)
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phi=0.d0
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dphi=0.d0
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k=(xdt+0.5)*12000 !Start audio at t=xdt+0.5 s (TR=15 and 30 s)
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if(ntrperiod.ge.60) k=(xdt+1.0)*12000 !TR 60+ at t = xdt + 1.0 s
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isym0=-99
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do i=1,npts !Add this signal into cdat()
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isym=i/nsps + 1
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if(isym.gt.nsym) exit
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if(isym.ne.isym0) then
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freq_drift=f1*i*dt/60.0
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if(nstp.ne.0) freq_drift=freq_drift - nstp*nint(freq_drift/nstp)
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if (msg(1:2).eq.'ST') then
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freq = f0 + freq_drift
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else
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freq = f0 + freq_drift + itone(isym)*baud*mode65
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endif
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dphi=twopi*freq*dt
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isym0=isym
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1020 format(i4,i6,f7.1,2x,a1,2x,f5.1,1x,f6.2,2f6.1,i4,2x,a)
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n=65.0*baud*mode65/100.0 + 0.9999
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nfstep=100*n
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nf1=1500 - nfstep*nsig/2
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do n=1,nsig
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if(nsig.ge.2) then
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f0=nf1 + (n-1)*nfstep
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itone=ntone(:,n)
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endif
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phi=phi + dphi
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if(phi.gt.twopi) phi=phi-twopi
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xphi=phi
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z=cmplx(cos(xphi),sin(xphi))
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k=k+1
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if(k.ge.1) cdat(k)=cdat(k) + sig*z
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phi=0.d0
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dphi=0.d0
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k=(xdt+0.5)*12000 !Start audio at t=xdt+0.5 s (TR=15 and 30 s)
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if(ntrperiod.ge.60) k=(xdt+1.0)*12000 !TR 60+ at t = xdt + 1.0 s
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isym0=-99
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do i=1,npts !Add this signal into cdat()
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isym=i/nsps + 1
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if(isym.gt.nsym) exit
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if(isym.ne.isym0) then
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freq_drift=f1*i*dt/60.0
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if(nstp.ne.0) freq_drift=freq_drift - nstp*nint(freq_drift/nstp)
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if (msg(1:2).eq.'ST') then
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freq = f0 + freq_drift
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else
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freq = f0 + freq_drift + itone(isym)*baud*mode65
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endif
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dphi=twopi*freq*dt
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isym0=isym
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endif
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phi=phi + dphi
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if(phi.gt.twopi) phi=phi-twopi
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xphi=phi
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z=cmplx(cos(xphi),sin(xphi))
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k=k+1
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if(k.ge.1) cdat(k)=cdat(k) + sig*z
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enddo
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enddo
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if(fspread.ne.0) then !Apply specified Doppler spread
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@ -35,7 +35,7 @@ program sumsim
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fac=1.0/nargs
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iwave(1:npts)=nint(fac*wave(1:npts))
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open(12,file='000000_0000.wav',access='stream',status='unknown')
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open(12,file='000001_0000.wav',access='stream',status='unknown')
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write(12) h,iwave(1:npts)
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close(12)
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