Initial Commit

2018-02-08 21:28:33 -05:00
commit 678c1d3966
14352 changed files with 3176737 additions and 0 deletions
@@ -0,0 +1,48 @@
+subroutine wspr5_wav(baud,xdt,f0,itone,snrdb,iwave)
+
+! Generate iwave() from itone().
+  
+  include 'wsprlf_params.f90'
+  parameter (NMAX=300*12000)
+  integer itone(NN)
+  integer*2 iwave(NMAX)
+  real*8 twopi,dt,dphi0,dphi1,dphi,phi
+  real dat(NMAX)
+
+  twopi=8.d0*atan(1.d0)
+  dt=1.d0/12000.d0
+
+  dat=0.
+  if(snrdb.lt.90) then
+     do i=1,NMAX
+        dat(i)=gran()          !Generate gaussian noise
+     enddo
+     bandwidth_ratio=2500.0/6000.0
+     sig=sqrt(2*bandwidth_ratio)*10.0**(0.05*snrdb)
+  else
+     sig=1.0
+  endif
+  
+  dphi0=twopi*(f0-0.25d0*baud)*dt
+  dphi1=twopi*(f0+0.25d0*baud)*dt
+  phi=0.d0
+  k=nint(xdt/dt)
+  do j=1,NN
+     dphi=dphi0
+     if(itone(j).eq.1) dphi=dphi1
+     if(k.eq.0) phi=-dphi
+     do i=1,NSPS0
+        k=k+1
+        phi=phi+dphi
+        if(phi.gt.twopi) phi=phi-twopi
+        xphi=phi
+        if(k.gt.0 .and. k.le.NMAX) dat(k)=dat(k) + sig*sin(xphi)
+     enddo
+  enddo
+  fac=32767.0
+  rms=100.0
+  if(snrdb.ge.90.0) iwave=nint(fac*dat)
+  if(snrdb.lt.90.0) iwave=nint(rms*dat)
+
+  return
+end subroutine wspr5_wav