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https://github.com/saitohirga/WSJT-X.git
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a74d000c32
Commit some things omitted last time. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6420 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
94 lines
2.6 KiB
Fortran
94 lines
2.6 KiB
Fortran
program JTMSKsim
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use wavhdr
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parameter (NMAX=15*12000)
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real pings(0:NMAX-1)
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character arg*8,msg*22,msgsent*22,fname*40
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character*3 rpt(0:7)
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complex cmsg(0:1404-1) !Waveform of message (once)
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complex cwave(0:NMAX-1) !Simulated received waveform
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real*8 dt,twopi,freq,phi,dphi0,dphi1,dphi
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type(hdr) h !Header for .wav file
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integer*2 iwave(0:NMAX-1)
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integer itone(234) !Message bits
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integer b11(11) !Barker-11 code
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data b11/1,1,1,0,0,0,1,0,0,1,0/
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data rpt /'26 ','27 ','28 ','R26','R27','R28','RRR','73 '/
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nargs=iargc()
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if(nargs.ne.5) then
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print*,'Usage: JTMSKsim message freq width snr nfiles'
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print*,' '
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print*,'Examples: JTMSKsim "K1ABC W9XYZ EN37" 1500 0.12 2 1'
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print*,' JTMSKsim "<K1ABC W9XYZ> R26" 1500 0.01 1 3'
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go to 999
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endif
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call getarg(1,msg)
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call getarg(2,arg)
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read(arg,*) freq
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call getarg(3,arg)
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read(arg,*) width
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call getarg(4,arg)
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read(arg,*) snrdb
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call getarg(5,arg)
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read(arg,*) nfiles
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sig=10.0**(0.05*snrdb)
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twopi=8.d0*atan(1.d0)
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h=default_header(12000,NMAX)
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ichk=0
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call genmsk(msg,ichk,msgsent,itone,itype) !Check message type
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if(itype.lt.1 .or. itype.gt.7) then
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print*,'Illegal message'
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go to 999
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endif
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dt=1.d0/12000.d0 !Sample interval
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dphi0=twopi*(freq-500.d0)*dt !Phase increment, lower tone
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dphi1=twopi*(freq+500.d0)*dt !Phase increment, upper tone
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nsym=234
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if(itype.eq.7) nsym=35
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nspm=6*nsym !Samples per message
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k=-1
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phi=0.d0
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do j=1,nsym
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dphi=dphi0
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if(itone(j).eq.1) dphi=dphi1
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do i=1,6
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k=k+1
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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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cmsg(k)=cmplx(cos(xphi),sin(xphi))
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enddo
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enddo
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call makepings(pings,NMAX,width,sig)
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do ifile=1,nfiles !Loop over requested number of files
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write(fname,1002) ifile !Output filename
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1002 format('000000_',i4.4)
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open(10,file=fname(1:11)//'.wav',access='stream',status='unknown')
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fac=sqrt(6000.0/2500.0)
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j=-1
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do i=0,NMAX-1
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j=j+1
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if(j.ge.6*nsym) j=j-6*nsym
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xx=0.707*gran()
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yy=0.707*gran()
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cwave(i)=pings(i)*cmsg(j) + fac*cmplx(xx,yy)
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iwave(i)=30.0*real(cwave(i))
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! write(88,3003) i,i/12000.d0,cwave(i)
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!3003 format(i8,f12.6,2f10.3)
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enddo
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write(10) h,iwave !Save the .wav file
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close(10)
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! call jtmsk_short(cwave,NMAX,msg)
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enddo
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999 end program JTMSKsim
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