2021-04-09 08:57:41 -04:00
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program synctst2
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! Tests JT65B2 sync patterns
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parameter (LAGMAX=20)
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real ccf0(0:LAGMAX),ccf1(0:LAGMAX),ccf2(0:LAGMAX),ccf3(0:LAGMAX)
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character arg*12,line*64
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integer*8 n8
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integer npr(126),np0(126),np1(126),npr1(126),npr2(126)
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data npr/1,0,0,1,1,0,0,0,1,1,1,1,1,1,0,1,0,1,0,0, &
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0,1,0,1,1,0,0,1,0,0,0,1,1,1,0,0,1,1,1,1, &
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0,1,1,0,1,1,1,1,0,0,0,1,1,0,1,0,1,0,1,1, &
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0,0,1,1,0,1,0,1,0,1,0,0,1,0,0,0,0,0,0,1, &
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1,0,0,0,0,0,0,0,1,1,0,1,0,0,1,0,1,1,0,1, &
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0,1,0,1,0,0,1,1,0,0,1,0,0,1,0,0,0,0,1,1, &
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1,1,1,1,1,1/
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data npr2/1,0,0,1,2,0,0,0,2,1,1,2,2,2,0,2,0,2,0,0, &
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0,1,0,2,1,0,0,1,0,0,0,2,1,1,0,0,1,1,2,2, &
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0,2,2,0,2,1,1,1,0,0,0,1,2,0,1,0,2,0,1,1, &
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0,0,2,2,0,1,0,1,0,2,0,0,2,0,0,0,0,0,0,1, &
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1,0,0,0,0,0,0,0,1,2,0,2,0,0,2,0,2,1,0,1, &
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0,2,0,1,0,0,2,2,0,0,1,0,0,2,0,0,0,0,1,1, &
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1,2,1,2,1,2/
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data n8/x'4314f4725bb357e0'/
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write(*,1102) n8
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write(line,1102) n8
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1102 format(b63)
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read(line,1104) npr1(1:63)
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1104 format(63i1)
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npr1(64:126)=npr1(1:63)
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worst=0.
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do lag=0,LAGMAX
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nsum=0
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do i=1,126-lag
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nsum=nsum + npr(i)*npr(lag+i)
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enddo
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ccf0(lag)=2.0*nsum/(126.0-lag)
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if(lag.ge.1 .and. ccf0(lag).gt.worst) worst=ccf0(lag)
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enddo
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worst1=0.
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do lag=0,LAGMAX
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nsum=0
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do i=1,126-lag
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nsum=nsum + npr1(i)*npr1(lag+i)
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enddo
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ccf1(lag)=(63.0/64.0)*2.0*nsum/(126.0-lag)
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if(lag.ge.1 .and. ccf1(lag).gt.worst1) worst1=ccf1(lag)
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enddo
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ccf1=ccf1/ccf1(0)
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worst1=worst1/ccf1(0)
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np0=0
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np1=0
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n0=0
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do i=1,126
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if(npr2(i).eq.1) then
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np0(i)=1
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n0=n0+1
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else if(npr2(i).eq.2) then
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np1(i)=1
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endif
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enddo
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worst2=0.
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do lag=0,LAGMAX
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nsum=0
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do i=1,126-lag
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nsum=nsum + np0(i)*np0(lag+i) + np1(i)*np1(lag+i)
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enddo
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ccf2(lag)=2.0*nsum/(126.0-lag)
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if(lag.ge.1 .and. ccf2(lag).gt.worst2) then
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worst2=ccf2(lag)
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lagbad=lag
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endif
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enddo
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do lag=0,LAGMAX
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write(13,1100) lag,ccf0(lag),ccf1(lag),ccf2(lag)
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1100 format(i3,3f10.3)
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enddo
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print*,worst,worst1,worst2,n0,lagbad
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999 end program synctst2
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