mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-25 13:48:42 -05:00
1ee6659101
In mainwindow.cpp, return after executing call to fastSink(). ###???### git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6464 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
65 lines
1.5 KiB
Fortran
65 lines
1.5 KiB
Fortran
subroutine rectify_msk(c,msg0,imsg,freq2)
|
|
|
|
parameter (NSPM=1404)
|
|
complex c(0:NSPM-1) !Received data
|
|
complex cmsg(0:NSPM-1) !Message waveform
|
|
complex c1(0:NSPM-1) !Rectified signal
|
|
complex c2(0:NSPM-1) !Integral of rectified signal
|
|
complex c3(0:2*NSPM-1) !FFT of rectified signal
|
|
complex cfac
|
|
character*22 msg0,msg,msgsent
|
|
integer i4tone(234)
|
|
|
|
ichk=0
|
|
msg=msg0
|
|
nsym=234
|
|
if(imsg.ge.0) then
|
|
ichk=10000+imsg
|
|
msg="<C1ALL C2ALL> 73"
|
|
nsym=35
|
|
endif
|
|
call genmsk(msg,ichk,msgsent,i4tone,itype) !Get tone sequence for msg
|
|
|
|
twopi=8.0*atan(1.0)
|
|
dt=1.0/12000.0
|
|
f0=1000.0
|
|
f1=2000.0
|
|
phi=0.
|
|
dphi=0.
|
|
k=-1
|
|
c2=0.
|
|
do j=1,nsym !Generate Tx waveform for msg
|
|
if(i4tone(j).eq.0) dphi=twopi*f0*dt
|
|
if(i4tone(j).eq.1) dphi=twopi*f1*dt
|
|
do i=1,6
|
|
k=k+1
|
|
phi=phi+dphi
|
|
cmsg(k)=cmplx(cos(phi),sin(phi))
|
|
c1(k)=conjg(cmsg(k))*c(k)
|
|
if(k.ge.1) c2(k)=c2(k-1) + c1(k)
|
|
enddo
|
|
enddo
|
|
c2(0)=c2(1)
|
|
pha=atan2(aimag(c2(NSPM-1)),real(c2(NSPM-1)))
|
|
cfac=cmplx(cos(pha),-sin(pha))
|
|
c1=cfac*c1
|
|
c2=cfac*c2
|
|
nfft=2*NSPM
|
|
c3(0:NSPM-1)=c2
|
|
c3(NSPM:nfft-1)=0.
|
|
df=12000.0/nfft
|
|
call four2a(c3,nfft,1,-1,1)
|
|
smax=0.
|
|
do i=0,nfft-1
|
|
f=i*df
|
|
if(i.gt.nfft/2) f=f-12000.0
|
|
s=1.e-10*(real(c3(i))**2 + aimag(c3(i))**2)
|
|
if(s.gt.smax) then
|
|
smax=s
|
|
freq2=1500.0 + f
|
|
endif
|
|
enddo
|
|
|
|
return
|
|
end subroutine rectify_msk
|