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Compute pol angle from sync symbols. Display recommended TxPol.

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This commit is contained in:
Joe Taylor 2021-06-18 14:16:16 -04:00
parent ceea631d5e
commit 42a3e246bf
7 changed files with 248 additions and 120 deletions
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3
map65/libm65/CMakeLists.txt
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@ -60,8 +60,8 @@ set (libm65_FSRCS
nchar.f90
noisegen.f90
packjt.f90
# pctile.f90
pfxdump.f90
polfit.f90
recvpkt.f90
rfile3a.f90
s3avg.f90
@ -80,6 +80,7 @@ set (libm65_FSRCS
trimlist.f90
twkfreq.f90
twkfreq_xy.f90
txpol.f90
wavhdr.f90
f77_wisdom.f

69
map65/libm65/map65a.f90
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@ -19,7 +19,7 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
real*8 fcenter
character*22 msg(MAXMSG)
character*3 shmsg0(4)
character mycall*12,hiscall*12,mygrid*6,hisgrid*6,grid*6,cp*1,cm*1
character mycall*12,hiscall*12,mygrid*6,hisgrid*6,cp*1,cm*1
integer indx(MAXMSG),nsiz(MAXMSG)
logical done(MAXMSG)
logical xpol,bq65,q65b_called
@ -43,12 +43,13 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
mode65=mod(nmode,10)
if(mode65.eq.3) mode65=4
mode_q65=nmode/10
xpol=(nxpol.ne.0)
nts_jt65=2**(mode65-1) !JT65 tone separation factor
nts_q65=2**(mode_q65) !Q65 tone separation factor
if(nagain.eq.0) then
call timer('get_cand',0)
call get_candidates(ss,savg,mfa,mfb,nts_jt65,nts_q65,cand,ncand)
call get_candidates(ss,savg,xpol,mfa,mfb,nts_jt65,nts_q65,cand,ncand)
call timer('get_cand',1)
candec=.false.
endif
@ -66,7 +67,6 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
mcall3a=mcall3b
mousefqso0=mousefqso
xpol=(nxpol.ne.0)
if(.not.xpol) ndphi=0
nsum=0
@ -318,28 +318,7 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
if(npol.lt.0) npol=npol+180
endif
! If Tx station's grid is in decoded message, compute optimum TxPol
i1=index(decoded,' ')
i2=index(decoded(i1+1:),' ') + i1
grid=' '
if(i2.ge.8 .and. i2.le.18) grid=decoded(i2+1:i2+4)//'mm'
ntxpol=0
cp=' '
if(xpol) then
if(grid(1:1).ge.'A' .and. grid(1:1).le.'R' .and. &
grid(2:2).ge.'A' .and. grid(2:2).le.'R' .and. &
grid(3:3).ge.'0' .and. grid(3:3).le.'9' .and. &
grid(4:4).ge.'0' .and. grid(4:4).le.'9') then
ntxpol=mod(npol-nint(2.0*dpol(mygrid,grid))+720,180)
if(nxant.eq.0) then
cp='H'
if(ntxpol.gt.45 .and. ntxpol.le.135) cp='V'
else
cp='/'
if(ntxpol.ge.90 .and. ntxpol.lt.180) cp='\'
endif
endif
endif
call txpol(xpol,decoded,mygrid,npol,nxant,ntxpol,cp)
if(ndphi.eq.0) then
write(*,1010) nkHz,ndf,npol,nutc,dt,nsync2, &
@ -368,9 +347,9 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
q65b_called=.true.
f0=cand(icand)%f
call timer('q65b ',0)
call q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol, &
xpol,mycall,hiscall,hisgrid,mode_q65,f0,fqso,newdat, &
nagain,max_drift,idec)
call q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf, &
ntol,xpol,mycall,mygrid, hiscall,hisgrid,mode_q65,f0,fqso, &
newdat,nagain,max_drift,idec)
call timer('q65b ',1)
if(idec.ge.0) candec(icand)=.true.
enddo
@ -379,9 +358,9 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
ikhz=mousefqso
f0=freq - (nkhz_center-48.0-1.27046) !### ??? ###
call timer('q65b ',0)
call q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol, &
xpol,mycall,hiscall,hisgrid,mode_q65,f0,fqso,newdat, &
nagain,max_drift,idec)
call q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf, &
ntol,xpol,mycall,mygrid,hiscall,hisgrid,mode_q65,f0,fqso, &
newdat,nagain,max_drift,idec)
call timer('q65b ',1)
endif
endif
@ -416,8 +395,8 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
ikhz=nint(freq)
f0=cand(icand)%f
call timer('q65b ',0)
call q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol, &
xpol,mycall,hiscall,hisgrid,mode_q65,f0,fqso,newdat, &
call q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf,ntol, &
xpol,mycall,mygrid,hiscall,hisgrid,mode_q65,f0,fqso,newdat, &
nagain,max_drift,idec)
call timer('q65b ',1)
if(idec.ge.0) candec(icand)=.true.
@ -494,28 +473,8 @@ subroutine map65a(dd,ss,savg,newdat,nutc,fcenter,ntol,idphi,nfa,nfb, &
if(npol.lt.0) npol=npol+180
endif
! If Tx station's grid is in decoded message, compute optimum TxPol
i1=index(decoded,' ')
i2=index(decoded(i1+1:),' ') + i1
grid=' '
if(i2.ge.8 .and. i2.le.18) grid=decoded(i2+1:i2+4)//'mm'
ntxpol=0
cp=' '
if(xpol) then
if(grid(1:1).ge.'A' .and. grid(1:1).le.'R' .and. &
grid(2:2).ge.'A' .and. grid(2:2).le.'R' .and. &
grid(3:3).ge.'0' .and. grid(3:3).le.'9' .and. &
grid(4:4).ge.'0' .and. grid(4:4).le.'9') then
ntxpol=mod(npol-nint(2.0*dpol(mygrid,grid))+720,180)
if(nxant.eq.0) then
cp='H'
if(ntxpol.gt.45 .and. ntxpol.le.135) cp='V'
else
cp='/'
if(ntxpol.ge.90 .and. ntxpol.lt.180) cp='\'
endif
endif
endif
call txpol(xpol,decoded,mygrid,npol,nxant,ntxpol,cp)
cmode='#A'
if(mode65.eq.2) cmode='#B'
if(mode65.eq.4) cmode='#C'

86
map65/libm65/polfit.f90 Normal file
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@ -0,0 +1,86 @@
subroutine polfit(y,npts,a)
! Input: y(npts) !Expect npts=4
! Output: a(1) = baseline
! a(2) = amplitude
! a(3) = theta (deg)
real y(npts)
real a(3)
real deltaa(3)
integer ipk(1)
save
! Set starting values:
a(1)=minval(y)
a(2)=maxval(y)-a(1)
ipk=maxloc(y)
a(3)=(ipk(1)-1)*45.0
deltaa(1:2)=0.1*(a(2)-a(1))
deltaa(3)=10.0
nterms=3
! Start the iteration
chisqr=0.
chisqr0=1.e6
iters=10
do iter=1,iters
do j=1,nterms
chisq1=fchisq_pol(y,npts,a)
fn=0.
delta=deltaa(j)
10 a(j)=a(j)+delta
chisq2=fchisq_pol(y,npts,a)
if(chisq2.eq.chisq1) go to 10
if(chisq2.gt.chisq1) then
delta=-delta !Reverse direction
a(j)=a(j)+delta
tmp=chisq1
chisq1=chisq2
chisq2=tmp
endif
20 fn=fn+1.0
a(j)=a(j)+delta
chisq3=fchisq_pol(y,npts,a)
if(chisq3.lt.chisq2) then
chisq1=chisq2
chisq2=chisq3
go to 20
endif
! Find minimum of parabola defined by last three points
delta=delta*(1./(1.+(chisq1-chisq2)/(chisq3-chisq2))+0.5)
a(j)=a(j)-delta
deltaa(j)=deltaa(j)*fn/3.
! write(*,4000) iter,j,a,deltaa,chisq2
!4000 format(2i2,2(2x,3f8.2),f12.5)
enddo
chisqr=fchisq_pol(y,npts,a)
! write(*,4000) 0,0,a,chisqr
if(deltaa(1).lt.0.01*(a(2)-a(1)) .and. deltaa(2).lt.0.01*(a(2)-a(1)) &
.and. deltaa(3).lt.1.0) exit
if(chisqr/chisqr0.gt.0.99) exit
a(3)=mod(a(3)+360.0,180.0)
chisqr0=chisqr
enddo
return
end subroutine polfit
real function fchisq_pol(y,npts,a)
real y(npts),a(3)
data rad/57.2957795/
chisq = 0.
do i=1,npts
theta=(i-1)*45.0
yfit=a(1) + a(2)*cos((theta-a(3))/rad)**2
chisq=chisq + (y(i) - yfit)**2
enddo
fchisq_pol=chisq
return
end function fchisq_pol

44
map65/libm65/q65b.f90
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@ -1,5 +1,6 @@
subroutine q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
mycall0,hiscall0,hisgrid,mode_q65,f0,fqso,newdat,nagain,max_drift,idec)
subroutine q65b(nutc,nqd,nxant,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
mycall0,mygrid,hiscall0,hisgrid,mode_q65,f0,fqso,newdat,nagain, &
max_drift,idec)
! This routine provides an interface between MAP65 and the Q65 decoder
! in WSJT-X. All arguments are input data obtained from the MAP65 GUI.
@ -16,6 +17,7 @@ subroutine q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
parameter (MAXFFT1=5376000) !56*96000
parameter (MAXFFT2=336000) !56*6000 (downsampled by 1/16)
parameter (NMAX=60*12000)
parameter (RAD=57.2957795)
! type(hdr) h !Header for the .wav file
integer*2 iwave(60*12000)
complex ca(MAXFFT1),cb(MAXFFT1) !FFTs of raw x,y data
@ -25,10 +27,11 @@ subroutine q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
real*8 fcenter,freq0
character*12 mycall0,hiscall0
character*12 mycall,hiscall
character*6 hisgrid
character*6 mygrid,hisgrid
character*4 grid4
character*80 line
character*80 wsjtx_dir
character*1 cp,cmode*2
common/cacb/ca,cb
save
@ -88,10 +91,14 @@ subroutine q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
! 96000 5376000 0.017857143 336000 6000.000
! 95238 5120000 0.018601172 322560 5999.994
if(ipol.eq.1) cz(0:MAXFFT2-1)=cx
if(ipol.eq.2) cz(0:MAXFFT2-1)=0.707*(cx+cy)
if(ipol.eq.3) cz(0:MAXFFT2-1)=cy
if(ipol.eq.4) cz(0:MAXFFT2-1)=0.707*(cx-cy)
poldeg=0.
if(xpol) then
poldeg=sync(ipk)%pol
cz(0:MAXFFT2-1)=cos(poldeg/RAD)*cx + sin(poldeg/RAD)*cy
else
cz(0:MAXFFT2-1)=cx
endif
cz(MAXFFT2)=0.
! Roll off below 500 Hz and above 2500 Hz.
ja=nint(500.0/df)
@ -136,21 +143,30 @@ subroutine q65b(nutc,nqd,fcenter,nfcal,nfsample,ikhz,mousedf,ntol,xpol, &
if(nsnr0.gt.-99) then
nq65df=nint(1000*(0.001*k0*df+nkhz_center-48.0+1.000-1.27046-ikhz))-nfcal
nq65df=nq65df + nfreq0 - 1000
npol=nint(poldeg)
if(nxant.ne.0) then
npol=npol-45
if(npol.lt.0) npol=npol+180
endif
call txpol(xpol,msg0(1:22),mygrid,npol,nxant,ntxpol,cp)
if(nqd.eq.1 .and. abs(nq65df-mousedf).lt.ntol) then
write(line,1020) ikhz,nq65df,45*(ipol-1),nutc,xdt0,nsnr0,msg0(1:27),cq0
1020 format('!',i3.3,i5,i4,i6.4,f5.1,i5,' : ',a27,a3)
write(line,1020) ikhz,nq65df,npol,nutc,xdt0,nsnr0,msg0(1:27),cq0, &
ntxpol,cp
1020 format('!',i3.3,i5,i4,i6.4,f5.1,i5,' : ',a27,a3,i4,1x,a1)
write(*,1100) trim(line)
1100 format(a)
endif
! Write to lu 26, for Messages and Band Map windows
write(26,1014) freq0,nq65df,0,0,0,xdt0,45*(ipol-1),0, &
nsnr0,nutc,msg0(1:22),':',char(ichar('A') + mode_q65-1)
1014 format(f8.3,i5,3i3,f5.1,i4,i3,i4,i5.4,4x,a22,2x,a1,3x,':',a1)
cmode=': '
cmode(2:2)=char(ichar('A') + mode_q65-1)
write(26,1014) freq0,nq65df,0,0,0,xdt0,npol,0, &
nsnr0,nutc,msg0(1:22),':',cp,cmode
1014 format(f8.3,i5,3i3,f5.1,i4,i3,i4,i5.4,4x,a22,1x,2a1,2x,a2)
! Write to file map65_rx.log:
write(21,1110) freq0,nq65df,xdt0,45*(ipol-1),nsnr0,nutc,msg0(1:28),cq0
write(21,1110) freq0,nq65df,xdt0,npol,nsnr0,nutc,msg0(1:28),cq0
1110 format(f8.3,i5,f5.1,2i4,i5.4,2x,a28,': A',2x,a3)
endif

2
map65/libm65/synctest.f90
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@ -41,7 +41,7 @@ program synctest
call timer('synctest',0)
call timer('get_cand',0)
call get_candidates(ss,savg,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
call get_candidates(ss,savg,.true.,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
call timer('get_cand',1)
do k=1,ncand

33
map65/libm65/txpol.f90 Normal file
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@ -0,0 +1,33 @@
subroutine txpol(xpol,decoded,mygrid,npol,nxant,ntxpol,cp)
! If Tx station's grid is in decoded message, compute optimum TxPol
character*22 decoded
character*6 mygrid,grid
character*1 cp
logical xpol
ntxpol=0
i1=index(decoded,' ')
i2=index(decoded(i1+1:),' ') + i1
grid=' '
if(i2.ge.8 .and. i2.le.18) grid=decoded(i2+1:i2+4)//'mm'
ntxpol=0
cp=' '
if(xpol .and.grid(1:4).ne.'RR73') then
if(grid(1:1).ge.'A' .and. grid(1:1).le.'R' .and. &
grid(2:2).ge.'A' .and. grid(2:2).le.'R' .and. &
grid(3:3).ge.'0' .and. grid(3:3).le.'9' .and. &
grid(4:4).ge.'0' .and. grid(4:4).le.'9') then
ntxpol=mod(npol-nint(2.0*dpol(mygrid,grid))+720,180)
if(nxant.eq.0) then
cp='H'
if(ntxpol.gt.45 .and. ntxpol.le.135) cp='V'
else
cp='/'
if(ntxpol.ge.90 .and. ntxpol.lt.180) cp='\'
endif
endif
endif
return
end subroutine txpol

131
map65/libm65/wideband_sync.f90
View File

@ -4,12 +4,14 @@ module wideband_sync
real :: snr !Relative S/N of sync detection
real :: f !Freq of sync tone, 0 to 96000 Hz
real :: xdt !DT of matching sync pattern, -1.0 to +4.0 s
real :: pol !Polarization angle, degrees
integer :: ipol !Polarization angle, 1 to 4 ==> 0, 45, 90, 135 deg
integer :: iflip !Sync type: JT65 = +/- 1, Q65 = 0
end type candidate
type sync_dat
real :: ccfmax
real :: xdt
real :: pol
integer :: ipol
integer :: iflip
logical :: birdie
@ -17,12 +19,13 @@ module wideband_sync
parameter (NFFT=32768)
parameter (MAX_CANDIDATES=50)
parameter (SNR1_THRESHOLD=4.5)
type(sync_dat) :: sync(NFFT)
integer nkhz_center
contains
subroutine get_candidates(ss,savg,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
subroutine get_candidates(ss,savg,xpol,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
! Search symbol spectra ss() over frequency range nfa to nfb (in kHz) for
! JT65 and Q65 sync patterns. The nts_* variables are the submode tone
@ -33,7 +36,7 @@ subroutine get_candidates(ss,savg,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
real ss(4,322,NFFT),savg(4,NFFT)
real pavg(-20:20)
integer indx(NFFT)
logical skip
logical xpol,skip
type(candidate) :: cand(MAX_CANDIDATES)
do j=322,1,-1 !Find end of data in ss()
@ -41,7 +44,7 @@ subroutine get_candidates(ss,savg,nfa,nfb,nts_jt65,nts_q65,cand,ncand)
enddo
jz=j
call wb_sync(ss,savg,jz,nfa,nfb)
call wb_sync(ss,savg,xpol,jz,nfa,nfb)
tstep=2048.0/11025.0 !0.185760 s: 0.5*tsym_jt65, 0.3096*tsym_q65
df3=96000.0/NFFT
@ -57,7 +60,7 @@ call wb_sync(ss,savg,jz,nfa,nfb)
f0=0.001*(n-1)*df3
snr1=sync(n)%ccfmax
! print*,'=A',f0,snr1
if(snr1.lt.4.5) exit
if(snr1.lt.SNR1_THRESHOLD) exit
flip=sync(n)%iflip
if(flip.ne.0.0 .and. nts_jt65.eq.0) cycle
if(flip.eq.0.0 .and. nts_q65.eq.0) cycle
@ -94,6 +97,7 @@ call wb_sync(ss,savg,jz,nfa,nfb)
cand(k)%snr=snr1
cand(k)%f=f0
cand(k)%xdt=sync(n)%xdt
cand(k)%pol=sync(n)%pol
cand(k)%ipol=sync(n)%ipol
cand(k)%iflip=nint(flip)
if(k.ge.MAX_CANDIDATES) exit
@ -103,18 +107,21 @@ call wb_sync(ss,savg,jz,nfa,nfb)
return
end subroutine get_candidates
subroutine wb_sync(ss,savg,jz,nfa,nfb)
subroutine wb_sync(ss,savg,xpol,jz,nfa,nfb)
! Compute "orange sync curve" using the Q65 sync pattern
use timer_module, only: timer
parameter (NFFT=32768)
parameter (LAGMAX=30)
real ss(4,322,NFFT)
real savg(4,NFFT)
real savg_med(4)
logical first
real ccf4(4),ccf4best(4),a(3)
logical first,xpol
integer isync(22)
integer jsync0(63),jsync1(63)
integer ip(1)
! Q65 sync symbols
data isync/1,9,12,13,15,22,23,26,27,33,35,38,46,50,55,60,62,66,69,74,76,85/
@ -147,12 +154,14 @@ subroutine wb_sync(ss,savg,jz,nfa,nfb)
df3=96000.0/NFFT
ia=nint(1000*nfa/df3) + 1 !Flat frequency range for WSE converters
ib=nint(1000*nfb/df3) + 1
npol=1
if(xpol) npol=4
do i=1,4
do i=1,npol
call pctile(savg(i,ia:ib),ib-ia+1,50,savg_med(i))
enddo
! do i=ia,ib
! write(14,3014) 0.001*(i-1)*df3,savg(1:4,i)
! write(14,3014) 0.001*(i-1)*df3,savg(1:npol,i)
!3014 format(5f10.3)
! enddo
@ -162,57 +171,82 @@ subroutine wb_sync(ss,savg,jz,nfa,nfb)
do i=ia,ib
ccfmax=0.
do ipol=1,4
do lag=0,LAGMAX
do lag=0,LAGMAX
ccf=0.
do j=1,22 !Test for Q65 sync
k=isync(j) + lag
ccf=ccf + ss(ipol,k,i+1) + ss(ipol,k+1,i+1) + ss(ipol,k+2,i+1)
enddo
ccf=ccf - savg(ipol,i+1)*3*22/float(jz)
if(ccf.gt.ccfmax) then
ipolbest=ipol
lagbest=lag
ccfmax=ccf
flip=0.
endif
ccf=0.
ccf4=0.
do j=1,22 !Test for Q65 sync
k=isync(j) + lag
ccf4=ccf4 + ss(1:npol,k,i+1) + ss(1:npol,k+1,i+1) + ss(1:npol,k+2,i+1)
enddo
ccf4=ccf4 - savg(1:npol,i+1)*3*22/float(jz)
ccf=maxval(ccf4)
ip=maxloc(ccf4)
ipol=ip(1)
if(ccf.gt.ccfmax) then
ipolbest=ipol
lagbest=lag
ccfmax=ccf
ccf4best=ccf4
flip=0.
endif
ccf=0.
do j=1,63 !Test for JT65 sync, std msg
k=jsync0(j) + lag
ccf=ccf + ss(ipol,k,i+1) + ss(ipol,k+1,i+1)
enddo
ccf=ccf - savg(ipol,i+1)*2*63/float(jz)
if(ccf.gt.ccfmax) then
ipolbest=ipol
lagbest=lag
ccfmax=ccf
flip=1.0
endif
ccf=0.
ccf4=0.
do j=1,63 !Test for JT65 sync, std msg
k=jsync0(j) + lag
ccf4=ccf4 + ss(1:npol,k,i+1) + ss(1:npol,k+1,i+1)
enddo
ccf4=ccf4 - savg(1:npol,i+1)*2*63/float(jz)
ccf=maxval(ccf4)
ip=maxloc(ccf4)
ipol=ip(1)
if(ccf.gt.ccfmax) then
ipolbest=ipol
lagbest=lag
ccfmax=ccf
ccf4best=ccf4
flip=1.0
endif
ccf=0.
do j=1,63 !Test for JT65 sync, OOO msg
k=jsync1(j) + lag
ccf=ccf + ss(ipol,k,i+1) + ss(ipol,k+1,i+1)
enddo
ccf=ccf - savg(ipol,i+1)*2*63/float(jz)
if(ccf.gt.ccfmax) then
ipolbest=ipol
lagbest=lag
ccfmax=ccf
flip=-1.0
endif
ccf=0.
ccf4=0.
do j=1,63 !Test for JT65 sync, OOO msg
k=jsync1(j) + lag
ccf4=ccf4 + ss(1:npol,k,i+1) + ss(1:npol,k+1,i+1)
enddo
ccf4=ccf4 - savg(1:npol,i+1)*2*63/float(jz)
ccf=maxval(ccf4)
ip=maxloc(ccf4)
ipol=ip(1)
if(ccf.gt.ccfmax) then
ipolbest=ipol
lagbest=lag
ccfmax=ccf
ccf4best=ccf4
flip=-1.0
endif
enddo ! lag
enddo !ipol
enddo ! lag
poldeg=0.
if(xpol .and. ccfmax.ge.SNR1_THRESHOLD) then
call polfit(ccf4best,4,a)
poldeg=a(3)
endif
sync(i)%ccfmax=ccfmax
sync(i)%xdt=lagbest*tstep-1.0
sync(i)%pol=poldeg
sync(i)%ipol=ipolbest
sync(i)%iflip=flip
sync(i)%birdie=.false.
if(ccfmax/(savg(ipolbest,i)/savg_med(ipolbest)).lt.3.0) sync(i)%birdie=.true.
if(sync(i)%iflip.eq.0 .and. sync(i)%ccfmax .gt. 20.0) then
write(50,3050) i,lagbest,sync(i)%ccfmax,sync(i)%xdt,sync(i)%ipol, &
sync(i)%birdie,ccf4best
3050 format(2i5,f10.3,f8.2,i5,1x,L3,4f7.1)
endif
enddo ! i (frequency bin)
! do i=ia,ib
@ -223,7 +257,6 @@ subroutine wb_sync(ss,savg,jz,nfa,nfb)
call pctile(sync(ia:ib)%ccfmax,ib-ia+1,50,base)
sync(ia:ib)%ccfmax=sync(ia:ib)%ccfmax/base
! print*,base
return
end subroutine wb_sync