mirror of https://github.com/saitohirga/WSJT-X.git
147 lines
4.5 KiB
Fortran
147 lines
4.5 KiB
Fortran
subroutine q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
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mycall0,hiscall0,hisgrid,mode64)
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use wavhdr
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parameter (MAXFFT1=5376000) !56*96000
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parameter (MAXFFT2=336000) !56*6000 (downsampled by 1/16)
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parameter (NMAX=60*12000)
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type(hdr) h !Header for the .wav file
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integer*2 iwave(60*12000)
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complex ca(MAXFFT1),cb(MAXFFT1) !FFTs of raw x,y data
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complex cx(0:MAXFFT2-1),cy(0:MAXFFT2-1),cz(0:MAXFFT2-1)
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logical xpol,first
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real*8 fcenter
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character*12 mycall0,hiscall0
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character*12 mycall,hiscall
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character*6 hisgrid
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character*4 grid4
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character*125 cmnd
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character*62 line
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character*80 line2
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character*40 msg40
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character*15 fname
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character*80 wsjtx_dir
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common/cacb/ca,cb
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data first/.true./
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save
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if(first) then
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open(9,file='wsjtx_dir.txt',status='old')
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read(9,*) wsjtx_dir
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close(9)
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first=.false.
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endif
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mycall='K1JT'
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hiscall='IV3NWV'
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grid4='AA00'
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if(mycall0(1:1).ne.' ') mycall=mycall0
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if(hiscall0(1:1).ne.' ') hiscall=hiscall0
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if(hisgrid(1:4).ne.' ') grid4=hisgrid(1:4)
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nfft1=MAXFFT1
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nfft2=MAXFFT2
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df=96000.0/NFFT1
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if(nfsample.eq.95238) then
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nfft1=5120000
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nfft2=322560
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df=96000.0/nfft1
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endif
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nh=nfft2/2
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ikhz0=nint(1000.0*(fcenter-int(fcenter)))
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k0=((ikhz-ikhz0+48.0+0.27)*1000.0+nfcal+mousedf)/df
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if(k0.lt.nh .or. k0.gt.nfft1-nh) go to 900
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fac=1.0/nfft2
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cx(0:nh)=ca(k0:k0+nh)
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cx(nh+1:nfft2-1)=ca(k0-nh+1:k0-1)
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cx=fac*cx
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if(xpol) then
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cy(0:nh)=cb(k0:k0+nh)
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cy(nh+1:nfft2-1)=cb(k0-nh+1:k0-1)
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cy=fac*cy
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endif
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! Here cx and cy (if xpol) are frequency-domain data around the selected
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! QSO frequency, taken from the full-length FFT computed in filbig().
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! Values for fsample, nfft1, nfft2, df, and the downsampled data rate
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! are as follows:
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! fSample nfft1 df nfft2 fDownSampled
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! (Hz) (Hz) (Hz)
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!----------------------------------------------------
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! 96000 5376000 0.017857143 336000 6000.000
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! 95238 5120000 0.018601172 322560 5999.994
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! write(77,*) nutc,ikhz,mousedf,ntol
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! 1 2 3 4 5 6 7 8 9 10
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! 12345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901'
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cmnd='jt9 -3 -X 32 -f 1079 -F 1000 -c MyCall -x HisCall -g FN42 000000_0001.wav > q65_decodes.txt'
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write(cmnd(17:20),'(i4)') 1000
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write(cmnd(25:28),'(i4)') ntol
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write(cmnd(33:44),'(a12)') mycall
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write(cmnd(48:59),'(a12)') hiscall
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write(cmnd(63:66),'(a4)') grid4
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fname='000000_0001.wav'
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npol=1
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if(xpol) npol=4
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do ipol=1,npol
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if(ipol.eq.1) cz=cx
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if(ipol.eq.2) cz=0.707*(cx+cy)
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if(ipol.eq.3) cz=cy
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if(ipol.eq.4) cz=0.707*(cx-cy)
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call four2a(cz,2*nfft2,1,1,-1) !Transform to time domain (real), fsample=12000 Hz
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do i=0,nfft2-1
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j=nfft2-1-i
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iwave(2*i+1)=nint(real(cz(j)))
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iwave(2*i+2)=nint(aimag(cz(j)))
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enddo
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iwave(2*nfft2+1:)=0
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h=default_header(12000,NMAX)
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write(fname(11:11),'(i1)') ipol
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open(25,file=fname,access='stream',status='unknown')
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write(25) h,iwave
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close(25)
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write(cmnd(78:78),'(i1)') ipol
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if(ipol.eq.2) cmnd(84:84)='>'
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call execute_command_line(trim(trim(wsjtx_dir)//cmnd))
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enddo
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open(24,file='q65_decodes.txt',status='unknown')
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! 1 2 3 4 5 6
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! 1234567890123456789012345678901234567890123456789012345678901234567
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! 0001 -22 2.9 1081 : EA2AGZ IK4WLV -16 q0
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! 110 101 2 1814 2.9 -11 # QRZ HB9Q JN47 1 0 30 H
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nsnr0=-99
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line2=' '
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do i=1,8
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read(24,1002,end=100) line
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1002 format(a62)
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if(line(1:4).eq.'<Dec') cycle
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read(line,1010) nsnr,xdt,nfreq,msg40
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1010 format(4x,i4,f5.1,i5,4x,a40)
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nfreq=nfreq+mousedf
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if(nsnr.gt.nsnr0) then
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ipol0=(i/2)*45
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nsnr0=nsnr
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write(line2,1020) ikhz,nfreq-1000,ipol0,nutc,xdt,nsnr0,msg40(1:30),msg40(39:40)
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1020 format('!',i3.3,i5,i4,i6.4,f5.1,i5,' : ',a30,2x,a2)
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nsnr0=nsnr
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freq0=144.0 + 0.001*ikhz
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nfreq0=nfreq-1000
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xdt0=xdt
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endif
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enddo
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100 if(nsnr0.gt.-40) then
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write(*,1100) trim(line2)
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1100 format(a)
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write(21,1110) freq0,nfreq0,xdt0,ipol0,nsnr0,nutc,msg40(1:28),msg40(39:40)
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1110 format(f8.3,i5,f5.1,2i4,i5.4,2x,a28,': A',2x,a2)
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endif
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close(24,status='delete')
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900 return
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end subroutine q65b
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