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More progress on q3list decodes in NA VHF contest mode, Q65-60A.

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This commit is contained in:
Joe Taylor 2023-02-12 17:33:21 -05:00
parent 871198c44f
commit 7bf6a6123d
4 changed files with 71 additions and 10 deletions
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18
lib/decoder.f90
View File

@ -45,6 +45,7 @@ subroutine multimode_decoder(ss,id2,params,nfsample)
real ss(184,NSMAX)
logical baddata,newdat65,newdat9,single_decode,bVHF,bad0,newdat,ex
integer*2 id2(NTMAX*12000)
integer nqf(20)
type(params_block) :: params
real*4 dd(NTMAX*12000)
character(len=20) :: datetime
@ -211,7 +212,22 @@ subroutine multimode_decoder(ss,id2,params,nfsample)
params%nfa,params%nfb,logical(params%nclearave), &
single_decode,logical(params%nagain),params%max_drift, &
logical(params%newdat),params%emedelay,mycall,hiscall,hisgrid, &
params%nQSOProgress,ncontest,logical(params%lapcqonly),navg0)
params%nQSOProgress,ncontest,logical(params%lapcqonly),navg0,nqf)
!###
do k=1,20
if(nqf(k).eq.0) exit
nqd=1
navg0=0
ntol=5
call my_q65%decode(q65_decoded,id2,nqd,params%nutc,params%ntr, &
params%nsubmode,nqf(k),ntol,params%ndepth, &
params%nfa,params%nfb,logical(params%nclearave), &
.true.,.true.,params%max_drift, &
.false.,params%emedelay,mycall,hiscall,hisgrid, &
params%nQSOProgress,ncontest,logical(params%lapcqonly),navg0,nqf)
enddo
!###
call timer('dec_q65 ',1)
close(17)
go to 800

3
lib/map65_mmdec.f90
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@ -14,6 +14,7 @@ subroutine map65_mmdec(nutc,id2,nqd,nsubmode,nfa,nfb,nfqso,ntol,newdat, &
logical single_decode,bVHF,lnewdat,lagain,lclearave,lapcqonly
integer*2 id2(300*12000)
integer nqf(20)
! type(params_block) :: params
character(len=12) :: mycall, hiscall
character(len=6) :: hisgrid
@ -43,7 +44,7 @@ subroutine map65_mmdec(nutc,id2,nqd,nsubmode,nfa,nfb,nfqso,ntol,newdat, &
call timer('dec_q65 ',0)
call my_q65%decode(q65_decoded,id2,nqd,nutc,ntrperiod,nsubmode,nfqso, &
ntol,ndepth,nfa,nfb,lclearave,single_decode,lagain,max_drift,lnewdat, &
emedelay,mycall,hiscall,hisgrid,nQSOProgress,ncontest,lapcqonly,navg0)
emedelay,mycall,hiscall,hisgrid,nQSOProgress,ncontest,lapcqonly,navg0,nqf)
call timer('dec_q65 ',1)
return

58
lib/q65_decode.f90
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@ -33,7 +33,7 @@ contains
subroutine decode(this,callback,iwave,nqd0,nutc,ntrperiod,nsubmode,nfqso, &
ntol,ndepth,nfa0,nfb0,lclearave,single_decode,lagain,max_drift0, &
lnewdat0,emedelay,mycall,hiscall,hisgrid,nQSOprogress,ncontest, &
lapcqonly,navg0)
lapcqonly,navg0,nqf)
! Top-level routine that organizes the decoding of Q65 signals
! Input: iwave Raw data, i*2
@ -74,24 +74,26 @@ contains
character*80 fmt
integer*2 iwave(NMAX) !Raw data
real, allocatable :: dd(:) !Raw data
real xdtdecodes(100)
real f0decodes(100)
integer dat4(13) !Decoded message as 12 6-bit integers
integer dgen(13)
integer nq65param(3)
integer nqf(20)
integer stageno !Added by W3SZ
integer time
logical lclearave,lnewdat0,lapcqonly,unpk77_success
logical single_decode,lagain,ex
logical single_decode,lagain
complex, allocatable :: c00(:) !Analytic signal, 6000 Sa/s
complex, allocatable :: c0(:) !Analytic signal, 6000 Sa/s
type(q3list) callers(MAX_CALLERS)
! Start by setting some parameters and allocating storage for large arrays
call sec0(0,tdecode)
stageno=0
ndecodes=0
decodes=' '
f0decodes=0.
xdtdecodes=0.
nfa=nfa0
nfb=nfb0
nqd=nqd0
@ -183,7 +185,7 @@ contains
if(ichar(hiscall(1:1)).eq.0) hiscall=' '
if(ichar(hisgrid(1:1)).eq.0) hisgrid=' '
ncw=0
if(nqd.eq.1 .or. lagain) then
if(nqd.eq.1 .or. lagain .or. ncontest.eq.1) then
if(ncontest.eq.1) then
call q65_set_list2(mycall,hiscall,hisgrid,callers,nhist2, &
codewords,ncw)
@ -214,6 +216,7 @@ contains
f0dec=f0
go to 100
endif
if(ncontest.eq.1 .and. lagain) go to 100
! Prepare for a single-period decode with iaptype = 0, 1, 2, or 4
jpk0=(xdt+1.0)*6000 !Index of nominal start of signal
@ -318,6 +321,7 @@ contains
ndecodes=min(ndecodes+1,100)
decodes(ndecodes)=decoded
f0decodes(ndecodes)=f0dec
xdtdecodes(ndecodes)=dtdec
call q65_snr(dat4,dtdec,f0dec,mode_q65,snr2)
nsnr=nint(snr2)
call this%callback(nutc,snr1,nsnr,dtdec,f0dec,decoded, &
@ -363,6 +367,24 @@ contains
fdiff=f0-f0decodes(i)
if(fdiff.gt.-baud*mode_q65 .and. fdiff.lt.65*baud*mode_q65) go to 800
enddo
!### TEST REGION
if(ncontest.eq.-1) then
call timer('q65_dec0',0)
! Call top-level routine in q65 module: establish sync and try for a
! q3 or q0 decode.
call q65_dec0(iavg,iwave,ntrperiod,nint(f0),ntol,lclearave, &
emedelay,xdt,f0,snr1,width,dat4,snr2,idec,stageno)
call timer('q65_dec0',1)
write(*,3001) icand,nint(f0),xdt,idec
3001 format('a',i3,i5,f6.1,i3)
if(idec.ge.0) then
dtdec=xdt !We have a q3 or q0 decode at f0
f0dec=f0
go to 200
endif
endif
!###
jpk0=(xdt+1.0)*6000 !Index of nominal start of signal
if(ntrperiod.le.30) jpk0=(xdt+0.5)*6000 !For shortest sequences
if(jpk0.lt.0) jpk0=0
@ -452,9 +474,31 @@ contains
800 continue
enddo ! icand
if(iavg.eq.0 .and.navg(iseq).ge.2 .and. iand(ndepth,16).ne.0) go to 50
900 close(24)
return
if(ncontest.ne.1 .or. lagain) go to 999
if(ntrperiod.ne.60 .or. nsubmode.ne.0) go to 999
! This is first time here, and we're running Q65-60A in NA VHF Contest mode.
! Return a list of potential sync frequencies at which to try q3 decoding.
k=0
nqf=0
bw=baud*mode_q65*65
do i=1,ncand
! snr1=candidates(i,1)
! xdt= candidates(i,2)
f0 = candidates(i,3)
do j=1,ndecodes ! Already decoded one at or near this frequency?
fj=f0decodes(j)
if(f0.gt.fj-5.0 .and. f0.lt.fj+bw+5.0) go to 990
enddo
k=k+1
nqf(k)=nint(f0)
990 continue
enddo
999 return
end subroutine decode
end module q65_decode

2
lib/qra/q65/q65.f90
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@ -618,7 +618,7 @@ subroutine q65_dec1(s3,nsubmode,b90ts,esnodb,irc,dat4,decoded)
irc=-1
endif
nrc=irc
return
end subroutine q65_dec1