55 lines
1.4 KiB
Plaintext
55 lines
1.4 KiB
Plaintext
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subroutine softsym(id2,npts8,nsps8,newdat,fpk,syncpk,snrdb,xdt, &
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freq,drift,a3,schk,i1SoftSymbols)
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! Compute the soft symbols
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use timer_module, only: timer
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parameter (NZ2=1512,NZ3=1360)
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logical, intent(inout) :: newdat
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complex c2(0:NZ2-1)
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complex c3(0:NZ3-1)
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complex c5(0:NZ3-1)
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real a(3)
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integer*1 i1SoftSymbolsScrambled(207)
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integer*1 i1SoftSymbols(207)
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include 'jt9sync.f90'
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nspsd=16
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ndown=nsps8/nspsd
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! Mix, low-pass filter, and downsample to 16 samples per symbol
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call timer('downsam9',0)
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call downsam9(id2,npts8,nsps8,newdat,nspsd,fpk,c2)
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call timer('downsam9',1)
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call peakdt9(c2,nsps8,nspsd,c3,xdt) !Find DT
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fsample=1500.0/ndown
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a=0.
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call timer('afc9 ',0)
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call afc9(c3,nz3,fsample,a,syncpk) !Find deltaF, fDot, extra DT
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call timer('afc9 ',1)
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freq=fpk - a(1)
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drift=-2.0*a(2)
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! write(*,3301) fpk,freq,a
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!3301 format(2f9.3,3f10.4)
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a3=a(3)
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a(3)=0.
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call timer('twkfreq ',0)
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call twkfreq(c3,c5,nz3,fsample,a) !Correct for delta f, f1, f2 ==> a(1:3)
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call timer('twkfreq ',1)
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! Compute soft symbols (in scrambled order)
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call timer('symspec2',0)
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call symspec2(c5,nz3,nsps8,nspsd,fsample,freq,drift,snrdb,schk, &
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i1SoftSymbolsScrambled)
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call timer('symspec2',1)
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! Remove interleaving
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call interleave9(i1SoftSymbolsScrambled,-1,i1SoftSymbols)
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return
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end subroutine softsym
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