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Speed improvements for Q65 multi-decode.

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This commit is contained in:
Joe Taylor 2021-02-02 09:27:40 -05:00
parent 7d069c5617
commit 5850317de0
2 changed files with 30 additions and 26 deletions
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48
lib/q65_decode.f90
View File

@ -60,7 +60,8 @@ contains
character*77 c77
character*78 c78
character*6 cutc
character c6*6,c4*4
character c6*6,c4*4,cmode*4
character*80 fmt
integer*2 iwave(NMAX) !Raw data
real, allocatable :: dd(:) !Raw data
integer dat4(13) !Decoded message as 12 6-bit integers
@ -113,9 +114,12 @@ contains
baud=12000.0/nsps
this%callback => callback
nFadingModel=1
ibwa=max(1,int(1.8*log(baud*mode_q65)) + 2)
ibwb=min(10,ibwa+5)
if(iand(ndepth,3).eq.3) then
ibwa=max(1,int(1.8*log(baud*mode_q65)) + 1)
ibwb=min(10,ibwa+3)
if(iand(ndepth,3).ge.2) then
ibwa=max(1,int(1.8*log(baud*mode_q65)) + 2)
ibwb=min(10,ibwa+5)
else if(iand(ndepth,3).eq.3) then
ibwa=max(1,ibwa-1)
ibwb=min(10,ibwb+1)
endif
@ -233,21 +237,18 @@ contains
position='append',iostat=ios)
if(ios.eq.0) then
! Save decoding parameters to q65_decoded.dat, for later analysis.
write(cmode,'(i3)') ntrperiod
cmode(4:4)=char(ichar('A')+nsubmode)
c6=hiscall(1:6)
if(c6.eq.' ') c6='<b> '
c4=hisgrid(1:4)
if(c4.eq.' ') c4='<b> '
if(ntrperiod.ge.60) then
write(22,1022) nutc,ntrperiod,nsubmode,nQSOprogress,idec, &
nused,iaptype,irc,idf,idt,ibw,xdt,f0,snr1,snr2, &
tdecode,mycall(1:6),c6,c4,trim(decoded)
1022 format(i6.4,10i3,f6.2,f7.1,f7.2,f6.1,f6.2,1x,a6,1x,a6,1x,a4,1x,a)
else
write(22,1023) nutc,ntrperiod,nsubmode,nQSOprogress,idec, &
nused,iaptype,irc,idf,idt,ibw,xdt,f0,snr1,snr2, &
tdecode,mycall(1:6),c6,c4,trim(decoded)
1023 format(i6.6,10i3,f6.2,f7.1,f7.2,f6.1,f6.2,1x,a6,1x,a6,1x,a4,1x,a)
endif
fmt='(i6.4,1x,a4,5i2,3i3,f6.2,f7.1,f7.2,f6.1,f6.2,'// &
'1x,a6,1x,a6,1x,a4,1x,a)'
if(ntrperiod.le.30) fmt(5:5)='6'
write(22,fmt) nutc,cmode,nQSOprogress,idec,idf,idt,ibw,nused, &
icand,ncand,xdt,f0,snr1,snr2,tdecode,mycall(1:6),c6,c4, &
trim(decoded)
close(22)
endif
else
@ -315,19 +316,18 @@ contains
position='append',iostat=ios)
if(ios.eq.0) then
! Save decoding parameters to q65_decoded.dat, for later analysis.
write(cmode,'(i3)') ntrperiod
cmode(4:4)=char(ichar('A')+nsubmode)
c6=hiscall(1:6)
if(c6.eq.' ') c6='<b> '
c4=hisgrid(1:4)
if(c4.eq.' ') c4='<b> '
if(ntrperiod.ge.60) then
write(22,1022) nutc,ntrperiod,nsubmode,nQSOprogress,idec, &
nused,iaptype,irc,idf,idt,ibw,xdt,f0,snr1,snr2, &
tdecode,mycall(1:6),c6,c4,trim(decoded)
else
write(22,1023) nutc,ntrperiod,nsubmode,nQSOprogress,idec, &
nused,iaptype,irc,idf,idt,ibw,xdt,f0,snr1,snr2, &
tdecode,mycall(1:6),c6,c4,trim(decoded)
endif
fmt='(i6.4,1x,a4,5i2,3i3,f6.2,f7.1,f7.2,f6.1,f6.2,'// &
'1x,a6,1x,a6,1x,a4,1x,a)'
if(ntrperiod.le.30) fmt(5:5)='6'
write(22,fmt) nutc,cmode,nQSOprogress,idec,idf,idt,ibw,nused, &
icand,ncand,xdt,f0,snr1,snr2,tdecode,mycall(1:6),c6,c4, &
trim(decoded)
close(22)
endif
endif

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

@ -443,17 +443,21 @@ subroutine q65_ccf_22(s1,iz,jz,nfqso,ipk,jpk,f0,xdt,ccf2)
ccf2=ccf2/base
call indexx(ccf2(i1:i2),jzz,indx)
ncand=0
maxcand=20
do j=1,20
i=indx(jzz-j+1)+i1-1
if(ccf2(i).lt.3.0) exit
if(ccf2(i).lt.3.4) exit !Candidate limit
f=i*df
if(f.ge.(nfqso-ftol) .and. f.le.(nfqso+ftol)) cycle
biggest=maxval(ccf2(i-3:i+3))
i3=i-67*mode_q65
i4=i+3*mode_q65
biggest=maxval(ccf2(i3:i4))
if(ccf2(i).ne.biggest) cycle
ncand=ncand+1
candidates(ncand,1)=ccf2(i)
candidates(ncand,2)=xdt2(i)
candidates(ncand,3)=f
if(ncand.ge.maxcand) exit
enddo
return