mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-12 15:16:41 -05:00
d80b65dd73
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/jtms3@2525 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
40 lines
1.0 KiB
Fortran
40 lines
1.0 KiB
Fortran
subroutine decodemsk(cdat,npts,cw,i1,nchar,s2,msg)
|
|
|
|
! DF snd sync have been established, now decode the message
|
|
|
|
complex cdat(npts)
|
|
complex cw(168,0:63) !Complex waveforms for codewords
|
|
real s2(0:63,400)
|
|
character msg*400
|
|
complex z,zmax
|
|
character cc*64
|
|
! 1 2 3 4 5 6
|
|
! 0123456789012345678901234567890123456789012345678901234567890123
|
|
data cc/'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ./?- _ @'/
|
|
|
|
msg=' '
|
|
do j=1,nchar !Find best match for each character
|
|
ia=i1 + (j-1)*168
|
|
smax=0.
|
|
do k=0,40
|
|
kk=k
|
|
if(k.eq.40) kk=44
|
|
z=0.
|
|
do i=1,168
|
|
z=z + cdat(ia+i)*conjg(cw(i,kk))
|
|
enddo
|
|
ss=abs(z)
|
|
s2(k,j)=ss
|
|
if(ss.gt.smax) then
|
|
smax=ss
|
|
zmax=z
|
|
kpk=kk
|
|
endif
|
|
enddo
|
|
msg(j:j)=cc(kpk+1:kpk+1)
|
|
if(kpk.eq.44) msg(j:j)=' '
|
|
enddo
|
|
|
|
return
|
|
end subroutine decodemsk
|