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Working to improve Q65 decode performnce.

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This commit is contained in:
Joe Taylor 2023-02-10 10:37:27 -05:00
parent d6dd701601
commit a83649a768
2 changed files with 13 additions and 5 deletions
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10
lib/q65_decode.f90
View File

@ -228,10 +228,10 @@ contains
read(c78,1060) apsymbols
endif
call timer('q65loops',0)
call timer('q65loop1',0)
call q65_loops(c00,npts/2,nsps/2,nsubmode,ndepth,jpk0, &
xdt,f0,iaptype,xdt1,f1,snr2,dat4,idec)
call timer('q65loops',1)
call timer('q65loop1',1)
! write(*,3001) '=b',nfqso,ntol,ndepth,xdt,f0,idec
if(idec.ge.0) then
dtdec=xdt1
@ -366,6 +366,8 @@ contains
if(lapcqonly) npasses=1
iaptype=0
do ipass=0,npasses !Loop over AP passes
! write(*,3001) nutc,icand,ipass,f0,xdt,snr1
!3001 format('a',i5.4,2i3,3f7.1)
apmask=0 !Try first with no AP information
apsymbols=0
if(ipass.ge.1) then
@ -378,10 +380,10 @@ contains
read(c78,1060) apsymbols
endif
call timer('q65loops',0)
call timer('q65loop2',0)
call q65_loops(c00,npts/2,nsps/2,nsubmode,ndepth,jpk0, &
xdt,f0,iaptype,xdt1,f1,snr2,dat4,idec)
call timer('q65loops',1)
call timer('q65loop2',1)
! write(*,3001) '=e',nfqso,ntol,ndepth,xdt,f0,idec
if(idec.ge.0) then
dtdec=xdt1

8
lib/qra/q65/q65.f90
View File

@ -567,6 +567,10 @@ subroutine q65_ccf_22(s1,iz,jz,nfqso,ntol,iavg,ipk,jpk, &
! Save parameters for best candidates
jzz=ib-ia+1
call indexx(ccf2(ia:ib),jzz,indx)
call pctile(ccf2(ia:ib),jzz,50,ave)
call pctile(ccf2(ia:ib),jzz,84,base)
rms=base-ave
ncand=0
maxcand=20
do j=1,20
@ -578,8 +582,10 @@ subroutine q65_ccf_22(s1,iz,jz,nfqso,ntol,iavg,ipk,jpk, &
i4=min(iz,i+mode_q65)
biggest=maxval(ccf2(i3:i4))
if(ccf2(i).ne.biggest) cycle
snr=(ccf2(i)-ave)/rms
if(snr.lt.6.0) exit
ncand=ncand+1
candidates(ncand,1)=ccf2(i)
candidates(ncand,1)=snr
candidates(ncand,2)=xdt2(i)
candidates(ncand,3)=f
if(ncand.ge.maxcand) exit