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https://github.com/saitohirga/WSJT-X.git
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f210e47cd5
1. Clean up mskrtd to remove unused variables. 2. Re-instate Rx frequency spinbox in MSK144 mode to allow decoding of off-frequency signals with small FTol. Make changes needed to pass Rx Freq in to fortran routines. 3. Enable realtime decoder for testing. Auto sequence does not yet work when realtime decoding is enabled. There are probably other bugs as well. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@7109 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
78 lines
1.7 KiB
Fortran
78 lines
1.7 KiB
Fortran
subroutine hspec(id2,k,nutc0,ntrperiod,nrxfreq,ntol,bmsk144,ingain,green,s,jh,line1)
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! Input:
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! k pointer to the most recent new data
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! Output:
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! green() power
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! s() spectrum for horizontal spectrogram
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! jh index of most recent data in green(), s()
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parameter (JZ=703)
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character*80 line1
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integer*2 id2(0:120*12000-1)
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logical*1 bmsk144
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real green(0:JZ-1)
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real s(0:63,0:JZ-1)
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real x(512)
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complex cx(0:256)
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data rms/999.0/,k0/99999999/
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equivalence (x,cx)
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save ja,rms0
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gain=10.0**(0.1*ingain)
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nfft=512
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nstep=nfft
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nblks=7
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if(ntrperiod.lt.30) then
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nstep=256
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nblks=14
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endif
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if(k.gt.30*12000) go to 900
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if(k.lt.nfft) then
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jh=0
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go to 900 !Wait for enough samples to start
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endif
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if(k.lt.k0) then !Start a new data block
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ja=-nstep
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jh=-1
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rms0=0.0
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endif
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do iblk=1,nblks
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if(jh.lt.JZ-1) jh=jh+1
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ja=ja+nstep
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jb=ja+nfft-1
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x=id2(ja:jb)
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sq=dot_product(x,x)
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rms=sqrt(gain*sq/nfft)
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green(jh)=0.
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if(rms.gt.0.0) green(jh)=20.0*log10(rms)
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call four2a(x,nfft,1,-1,0) !Real-to-complex FFT
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df=12000.0/nfft
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fac=(1.0/nfft)**2
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do i=1,64
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j=2*i
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sx=real(cx(j))**2 + aimag(cx(j))**2 + real(cx(j-1))**2 + &
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aimag(cx(j-1))**2
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s(i-1,jh)=fac*gain*sx
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enddo
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! call smo121(s(0,jh),64) !### Good idea, or not? ###
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if(ja+2*nfft.gt.k) exit
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enddo
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k0=k
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!###
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if(bmsk144) then
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if(k.ge.7168) then
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tsec=(k-7168)/12000.0
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call mskrtd(id2(k-7168+1:k),nutc0,tsec,ntol,nrxfreq,line1)
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endif
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endif
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!###
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900 return
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end subroutine hspec
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