Merged master 8748

2018-08-05 11:33:30 -04:00
parent 8f8772f1bd
commit 62899069bf
1222 changed files with 70382 additions and 406763 deletions
@@ -0,0 +1,113 @@
+!-------------------------------------------------------------------------------
+!
+! This file is part of the WSPR application, Weak Signal Propagation Reporter
+!
+!-------------------------------------------------------------------------------
+
+program wsprsim
+
+  use wavhdr
+  include 'wspr_params.f90'
+  type(hdr) hwav
+  character arg*12,fname14*14,fname15*15
+  character*22 msg,msgsent
+  complex   c0(0:NMAX/NDOWN-1)
+  complex   c(0:NMAX/NDOWN-1)
+  integer   itone(NN)
+  integer*2 iwave(NMAX)
+  real*8    fMHz
+
+! Get command-line argument(s)
+  nargs=iargc()
+  if(nargs.ne.8) then
+     print*,'Usage:   wsprsim "message"       f0  DT fsp del  nwav nfiles snr'
+     print*,'Example: wsprsim "K1ABC FN42 30" 50 0.0 0.1 1.0  1      10   -33'
+     go to 999
+  endif
+  call getarg(1,msg)                     !Message to be transmitted
+  call getarg(2,arg)
+  read(arg,*) f0                         !Freq relative to WSPR-band center (Hz)
+  call getarg(3,arg)
+  read(arg,*) xdt                        !Time offset from nominal (s)
+  call getarg(4,arg)
+  read(arg,*) fspread                    !Watterson frequency spread (Hz)
+  call getarg(5,arg)
+  read(arg,*) delay                      !Watterson delay (ms)
+  call getarg(6,arg)
+  read(arg,*) nwav                       !1 for *.wav file, 0 for *.c2 file
+  call getarg(7,arg)
+  read(arg,*) nfiles                     !Number of files
+  call getarg(8,arg)
+  read(arg,*) snrdb                      !SNR_2500
+
+  twopi=8.0*atan(1.0)
+  fs=12000.0/NDOWN
+  dt=1.0/fs
+  tt=NSPS*dt
+  baud=12000.0/8192.0
+
+  txt=NZ*dt                              !Transmission length (s)
+  bandwidth_ratio=2500.0/(fs/2.0)
+  sig=sqrt(bandwidth_ratio) * 10.0**(0.05*snrdb)
+  if(snrdb.gt.90.0) sig=1.0
+  txt=NN*NSPS0/12000.0
+
+  call genwspr(msg,msgsent,itone)       !Encode the message, get itone
+
+  write(*,1000) f0,xdt,txt,snrdb,fspread,delay,nfiles,msgsent
+1000 format('f0:',f9.3,'   DT:',f6.2,'   txt:',f6.1,'   SNR:',f6.1,    &
+          '   fspread:',f6.1,'   delay:',f6.1,'  nfiles:',i3,2x,a22)
+!  write(*,*) "Channel symbols: "
+!  write(*,'(162i2)') itone
+
+  h=1.0
+  phi=0.0
+  c0=0.
+  k=-1 + nint(xdt/dt)
+  do j=1,NN
+     dphi=-twopi*(f0+h*(itone(j)-1.5)*baud)*dt
+     do i=1,NSPS
+        k=k+1
+        phi=mod(phi+dphi,twopi)
+        if(k.ge.0 .and. k.lt.NMAX/NDOWN) c0(k)=cmplx(cos(phi),sin(phi))
+     enddo
+  enddo
+  call sgran()
+  do ifile=1,nfiles
+     c=c0
+     if(nwav.eq.0) then
+        if( fspread .ne. 0.0 .or. delay .ne. 0.0 ) then
+           call watterson(c,NMAX/NDOWN,fs,delay,fspread)
+        endif
+        c=c*sig
+        if(snrdb.lt.90) then
+           do i=0,NMAX/NDOWN-1                   !Add gaussian noise at specified SNR
+              xnoise=gran()
+              ynoise=gran()
+              c(i)=c(i) + cmplx(xnoise,ynoise)
+           enddo
+        endif
+        write(fname14,1100) ifile
+1100    format('000000_',i4.4,'.c2')
+        open(10,file=fname14,status='unknown',access='stream')
+        fMHz=10.1387d0
+        nmin=2
+        write(10) fname14,nmin,fMHz,c      !Save to *.c2 file
+        close(10)
+        write(*,1108) ifile,xdt,f0,snrdb,fname14
+1108    format(i4,f7.2,f8.2,f7.1,2x,a14)
+     else
+        freq=1500.0+f0
+        call wspr_wav(baud,xdt,h,freq,itone,snrdb,iwave)
+        hwav=default_header(12000,NMAX)
+        write(fname15,1102) ifile
+1102    format('000000_',i4.4,'.wav')
+        open(10,file=fname15,status='unknown',access='stream')
+        write(10) hwav,iwave                !Save to *.wav file
+        close(10)
+        write(*,1110) ifile,xdt,f0,snrdb,fname15
+1110    format(i4,f7.2,f8.2,f7.1,2x,a15)
+     endif
+  enddo
+
+999 end program wsprsim
@@ -0,0 +1,30 @@
+subroutine unpack50(dat,n1,n2)
+
+  integer*1 dat(11)
+
+  i=dat(1)
+  i4=iand(i,255)
+  n1=ishft(i4,20)
+  i=dat(2)
+  i4=iand(i,255)
+  n1=n1 + ishft(i4,12)
+  i=dat(3)
+  i4=iand(i,255)
+  n1=n1 + ishft(i4,4)
+  i=dat(4)
+  i4=iand(i,255)
+  n1=n1 + iand(ishft(i4,-4),15)
+  n2=ishft(iand(i4,15),18)
+  i=dat(5)
+  i4=iand(i,255)
+  n2=n2 + ishft(i4,10)
+  i=dat(6)
+  i4=iand(i,255)
+  n2=n2 + ishft(i4,2)
+  i=dat(7)
+  i4=iand(i,255)
+  n2=n2 + iand(ishft(i4,-6),3)
+
+  return
+end subroutine unpack50
+