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Tweaks to decrease the number of garbage candidates slightly.

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This commit is contained in:
Steven Franke 2020-07-02 11:54:10 -05:00
parent f81af4d6e5
commit 3f1fd6e2c1
1 changed files with 4 additions and 5 deletions
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9
lib/fst240_decode.f90
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@ -270,9 +270,6 @@ contains
endif
minsync=1.25
if(iqorw.eq.2) then
minsync=1.2
endif
! Get first approximation of candidate frequencies
call get_candidates_fst240(c_bigfft,nfft1,nsps,hmod,fs,fa,fb, &
@ -412,7 +409,7 @@ contains
ns4=count(hbits(229:244).eq.(/1,1,1,0,0,1,0,0,1,0,1,1,0,0,0,1/))
ns5=count(hbits(305:320).eq.(/0,0,0,1,1,0,1,1,0,1,0,0,1,1,1,0/))
nsync_qual=ns1+ns2+ns3+ns4+ns5
if(nsync_qual.lt. 44) cycle !### Value ?? ###
if(nsync_qual.lt. 46) cycle !### Value ?? ###
scalefac=2.83
llra( 1: 60)=bitmetrics( 17: 76, 1)
@ -559,6 +556,7 @@ contains
fsig=fc_synced - 1.5*hmod*baud
!write(21,'(i6,7i6,f7.1,f9.2,f7.1,1x,f7.2,1x,f7.1,1x,a37)') &
! nutc,icand,itry,iaptype,ijitter,ntype,nsync_qual,nharderrors,dmin,sync,xsnr,xdt,fsig,msg
!flush(21)
call this%callback(nutc,smax1,nsnr,xdt,fsig,msg, &
iaptype,qual,ntrperiod,lwspr)
goto 2002
@ -748,10 +746,11 @@ contains
! Find candidates, using the CLEAN algorithm to remove a model of each one
! from s2() after it has been found.
pval=99.99
do while(ncand.lt.100 .and. pval.gt.minsync)
do while(ncand.lt.100)
im=maxloc(s2(ia:ib))
iploc=ia+im(1)-1 !Index of CCF peak
pval=s2(iploc) !Peak value
if(pval.lt.minsync) exit
if(s2(iploc).gt.thresh) then !Is this a possible candidate?
do i=-3,+3 !Remove 0.9 of a model CCF at
k=iploc+2*hmod*i !this frequency from s2()