mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-20 11:01:54 -05:00
199 lines
5.3 KiB
Fortran
199 lines
5.3 KiB
Fortran
subroutine q65_avg(nutc,ntrperiod,LL,nfqso,ntol,lclearave,xdt,f0,snr1,s3)
|
|
|
|
! Accumulate Q65 spectra s3(LL,63) and associated parameters for
|
|
! message averaging.
|
|
|
|
use q65
|
|
use packjt77
|
|
use timer_module, only: timer
|
|
character*78 c78
|
|
character*37 avemsg
|
|
character*1 cused(MAXAVE)
|
|
character*6 cutc
|
|
real s3(-64:LL-65,63) !Symbol spectra
|
|
integer dat4(13)
|
|
integer codewords(63,206)
|
|
integer apmask1(78),apsymbols1(78)
|
|
logical first,lclearave,lapcqonly
|
|
data first/.true./
|
|
save
|
|
|
|
if(LL.ne.LL0) then
|
|
LL0=LL
|
|
if(allocated(s3save)) deallocate(s3save)
|
|
if(allocated(s3avg)) deallocate(s3avg)
|
|
allocate(s3save(-64:LL-65,63,MAXAVE))
|
|
allocate(s3avg(-64:LL-65,63))
|
|
s3save=0.
|
|
s3avg=0.
|
|
endif
|
|
if(first .or. lclearave) then
|
|
iutc=-1
|
|
iseq=-1
|
|
f0save=0.0
|
|
nsave=0
|
|
first=.false.
|
|
s3save=0.
|
|
s3avg=0.
|
|
endif
|
|
|
|
if(ntrperiod.eq.15) then
|
|
dtdiff=0.038
|
|
else if(ntrperiod.eq.30) then
|
|
dtdiff=0.08
|
|
else if(ntrperiod.eq.60) then
|
|
dtdiff=0.16
|
|
else if(ntrperiod.eq.120) then
|
|
dtdiff=0.4
|
|
else if(ntrperiod.eq.300) then
|
|
dtdiff=0.9
|
|
endif
|
|
|
|
do i=1,MAXAVE !Don't save info more than once for same UTC and freq
|
|
if(nutc.eq.iutc(i) .and. abs(nfqso-f0save(i)).le.ntol) go to 10
|
|
enddo
|
|
|
|
! Save data for message averaging
|
|
nsave=nsave+1
|
|
if(nsave.gt.MAXAVE) nsave=nsave-MAXAVE
|
|
n=nutc
|
|
if(ntrperiod.ge.60) n=100*n
|
|
write(cutc,'(i6.6)') n
|
|
read(cutc,'(3i2)') ih,im,is
|
|
nsec=3600*ih + 60*im + is
|
|
iseq(nsave)=mod(nsec/ntrperiod,2) !T/R sequence: 0 (even) or 1 (odd)
|
|
iutc(nsave)=nutc !UTC, hhmm or hhmmss
|
|
snr1save(nsave)=snr1 !SNR from sync
|
|
xdtsave(nsave)=xdt !DT
|
|
f0save(nsave)=f0 !f0
|
|
s3save(:,:,nsave)=s3(:,:) !Symbol spectra
|
|
|
|
10 return
|
|
|
|
entry q65_avg2(ntrperiod,ntol,baud,nsubmode,nQSOprogress,lapcqonly, &
|
|
codewords,ncw,xdt,f0,snr1,snr2,dat4,idec)
|
|
|
|
mode_q65=2**nsubmode
|
|
f0diff=baud*mode_q65
|
|
snr1sum=0.
|
|
xdtsum=0.
|
|
fsum=0.
|
|
navg=0
|
|
s3avg=0.
|
|
|
|
! Find previously saved spectra that should be averaged with this one
|
|
do i=1,MAXAVE
|
|
cused(i)='.' !Flag for "not used"
|
|
if(iutc(i).lt.0) cycle
|
|
if(iseq(i).ne.iseq(nsave)) cycle !Sequence must match
|
|
if(abs(xdt-xdtsave(i)).gt.dtdiff) cycle !DT must be close
|
|
if(abs(f0-f0save(i)).gt.f0diff) cycle !Freq must match
|
|
cused(i)='$' !Flag for "use this one"
|
|
s3avg=s3avg + s3save(:,:,i) !Add this spectrum
|
|
snr1sum=snr1sum + snr1save(i)
|
|
xdtsum=xdtsum + xdtsave(i)
|
|
fsum=fsum + f0save(i)
|
|
navg=navg+1
|
|
enddo
|
|
|
|
! Find averages of snr1, xdt, and f0 used in this decoding attempt.
|
|
snr1ave=0.
|
|
xdtave=0.
|
|
f0ave=0.
|
|
if(navg.gt.0) then
|
|
snr1ave=snr1sum/navg
|
|
xdtave=xdtsum/navg
|
|
f0ave=fsum/navg
|
|
endif
|
|
|
|
! Write parameters for display to User in the Message Averaging (F7) window.
|
|
do i=1,MAXAVE
|
|
if(iutc(i).lt.0) cycle
|
|
if(ntrperiod.le.30) write(14,1000) cused(i),iutc(i),snr1save(i), &
|
|
xdtsave(i),f0save(i)
|
|
1000 format(a1,i7.6,f6.1,f6.2,f7.1)
|
|
if(ntrperiod.ge.60) write(14,1001) cused(i),iutc(i),snr1save(i), &
|
|
xdtsave(i),f0save(i)
|
|
1001 format(a1,i5.4,f6.1,f6.2,f7.1)
|
|
enddo
|
|
if(navg.lt.2) go to 100
|
|
|
|
s3avg=s3avg/navg
|
|
nFadingModel=1
|
|
do ibw=ibwa,ibwb
|
|
b90=1.72**ibw
|
|
b90ts=b90/baud
|
|
call timer('dec1avg ',0)
|
|
call q65_dec1(s3avg,nsubmode,b90ts,codewords,ncw,esnodb,irc,dat4,avemsg)
|
|
call timer('dec1avg ',1)
|
|
if(irc.ge.0) then
|
|
snr2=esnodb - 0.5*db(2500.0/baud) + 3.0 !Empirical adjustment
|
|
snr2=snr2 - db(float(navg)) !Is this right?
|
|
idec=100+navg
|
|
go to 100
|
|
endif
|
|
enddo
|
|
|
|
! Loop over full range of available AP
|
|
! APmask=0
|
|
! APsymbols=0
|
|
npasses=2
|
|
if(nQSOprogress.eq.5) npasses=3
|
|
if(lapcqonly) npasses=1
|
|
iaptype=0
|
|
do ipass=0,npasses
|
|
apmask=0 !Try first with no AP information
|
|
apsymbols=0
|
|
|
|
if(ipass.ge.1) then
|
|
! Subsequent passes use AP information appropiate for nQSOprogress
|
|
call q65_ap(nQSOprogress,ipass,ncontest,lapcqonly,iaptype, &
|
|
apsym0,apmask1,apsymbols1)
|
|
write(c78,1050) apmask1
|
|
1050 format(78i1)
|
|
read(c78,1060) apmask
|
|
1060 format(13b6.6)
|
|
write(c78,1050) apsymbols1
|
|
read(c78,1060) apsymbols
|
|
if(iaptype.eq.4) then
|
|
do j=1,3
|
|
ng15=32401+j
|
|
write(c78(60:74),'(b15.15)') ng15
|
|
read(c78,1060) dgen
|
|
call q65_enc(dgen,codewords(1,j))
|
|
enddo
|
|
endif
|
|
endif
|
|
|
|
do ibw=ibwa,ibwb
|
|
b90=1.72**ibw
|
|
b90ts=b90/baud
|
|
call timer('dec2avg ',0)
|
|
call q65_dec2(s3avg,nsubmode,b90ts,esnodb,irc,dat4,avemsg)
|
|
call timer('dec2avg ',1)
|
|
if(irc.ge.0) then
|
|
snr2=esnodb - db(2500.0/baud) + 3.0 !Empirical adjustment
|
|
snr2=snr2 - 0.5*db(float(navg)) !Is this right?
|
|
idec=100*(iaptype+2) + navg
|
|
go to 100
|
|
endif
|
|
enddo ! ibw
|
|
enddo ! ipass
|
|
|
|
100 return
|
|
|
|
entry q65_clravg
|
|
|
|
iutc=-1
|
|
iseq=-1
|
|
snr1save=0.
|
|
xdtsave=0.
|
|
f0save=0.0
|
|
nsave=0
|
|
if(allocated(s3save)) s3save=0.
|
|
if(allocated(s3avg)) s3avg=0.
|
|
|
|
return
|
|
|
|
end subroutine q65_avg
|