mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-22 04:11:16 -05:00
More work on K=50 decoding.
This commit is contained in:
Steven Franke
Bill Somerville
parent
65ff3ce05e
commit
fc3e24f696
@ -68,8 +68,9 @@ contains
|
||||
integer mcq(29),mrrr(19),m73(19),mrr73(19)
|
||||
|
||||
logical badsync,unpk77_success,single_decode
|
||||
logical first,nohiscall,lwspr,ex,wcalls_exists,donocrcdecode
|
||||
logical new_callsign
|
||||
logical first,nohiscall,lwspr
|
||||
logical new_callsign,plotspec_exists,wcalls_exists,do_nocrc_decode
|
||||
logical decdata_exists
|
||||
|
||||
integer*2 iwave(30*60*12000)
|
||||
|
||||
@ -234,15 +235,15 @@ contains
|
||||
if(ndepth.eq.3) then
|
||||
nblock=4
|
||||
jittermax=2
|
||||
donocrcdecode=.true.
|
||||
do_nocrc_decode=.true.
|
||||
elseif(ndepth.eq.2) then
|
||||
nblock=4
|
||||
jittermax=2
|
||||
donocrcdecode=.false.
|
||||
do_nocrc_decode=.false.
|
||||
elseif(ndepth.eq.1) then
|
||||
nblock=4
|
||||
jittermax=0
|
||||
donocrcdecode=.false.
|
||||
do_nocrc_decode=.false.
|
||||
endif
|
||||
|
||||
ndropmax=1
|
||||
@ -479,52 +480,24 @@ contains
|
||||
write(c77,'(77i1)') mod(message101(1:77)+rvec,2)
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
elseif(iwspr.eq.1) then
|
||||
iaptype=0
|
||||
if( donocrcdecode ) then
|
||||
maxosd=1
|
||||
call timer('d240_74 ',0)
|
||||
Keff=50
|
||||
norder=4
|
||||
call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
|
||||
ntype,nharderrors,dmin)
|
||||
call timer('d240_74 ',1)
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
endif
|
||||
write(c77,'(50i1)') message74(1:50)
|
||||
c77(51:77)='000000000000000000000110000'
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
if(unpk77_success) then
|
||||
unpk77_success=.false.
|
||||
do i=1,nwcalls
|
||||
if(index(msg,trim(wcalls(i))).gt.0) then
|
||||
unpk77_success=.true.
|
||||
iaptype=8
|
||||
endif
|
||||
enddo
|
||||
endif
|
||||
! First try decoding with Keff=64
|
||||
maxosd=2
|
||||
call timer('d240_74 ',0)
|
||||
Keff=64
|
||||
norder=3
|
||||
call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
|
||||
ntype,nharderrors,dmin)
|
||||
call timer('d240_74 ',1)
|
||||
if(nharderrors.lt.0) goto 3465
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
endif
|
||||
if(.not. unpk77_success) then
|
||||
maxosd=2
|
||||
call timer('d240_74 ',0)
|
||||
Keff=64
|
||||
norder=3
|
||||
call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
|
||||
ntype,nharderrors,dmin)
|
||||
call timer('d240_74 ',1)
|
||||
if(nharderrors.lt.0) cycle
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
endif
|
||||
write(c77,'(50i1)') message74(1:50)
|
||||
c77(51:77)='000000000000000000000110000'
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
endif
|
||||
|
||||
if(unpk77_success.and.Keff.eq.64) then
|
||||
|
||||
write(c77,'(50i1)') message74(1:50)
|
||||
c77(51:77)='000000000000000000000110000'
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
if(unpk77_success) then
|
||||
! If decode was obtained with Keff=64, save call/grid in fst4w_calls.txt if not there already.
|
||||
i1=index(msg,' ')
|
||||
i2=i1+index(msg(i1+1:),' ')
|
||||
wpart=trim(msg(1:i2))
|
||||
@ -545,6 +518,36 @@ contains
|
||||
endif
|
||||
endif
|
||||
endif
|
||||
3465 continue
|
||||
|
||||
! If no decode then try Keff=50
|
||||
iaptype=0
|
||||
if( .not. unpk77_success .and. do_nocrc_decode ) then
|
||||
maxosd=1
|
||||
call timer('d240_74 ',0)
|
||||
Keff=50
|
||||
norder=4
|
||||
call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
|
||||
ntype,nharderrors,dmin)
|
||||
call timer('d240_74 ',1)
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
endif
|
||||
write(c77,'(50i1)') message74(1:50)
|
||||
c77(51:77)='000000000000000000000110000'
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
! No CRC in this mode, so only accept the decode if call/grid have been seen before
|
||||
if(unpk77_success) then
|
||||
unpk77_success=.false.
|
||||
do i=1,nwcalls
|
||||
if(index(msg,trim(wcalls(i))).gt.0) then
|
||||
unpk77_success=.true.
|
||||
endif
|
||||
enddo
|
||||
endif
|
||||
endif
|
||||
|
||||
endif
|
||||
|
||||
if(nharderrors .ge.0 .and. unpk77_success) then
|
||||
@ -561,10 +564,10 @@ contains
|
||||
else
|
||||
call get_fst4_tones_from_bits(message74,itone,1)
|
||||
endif
|
||||
inquire(file='plotspec',exist=ex)
|
||||
inquire(file='plotspec',exist=plotspec_exists)
|
||||
fmid=-999.0
|
||||
call timer('dopsprd ',0)
|
||||
if(ex) then
|
||||
if(plotspec_exists) then
|
||||
call dopspread(itone,iwave,nsps,nmax,ndown,hmod, &
|
||||
isbest,fc_synced,fmid,w50)
|
||||
endif
|
||||
@ -586,13 +589,13 @@ contains
|
||||
endif
|
||||
nsnr=nint(xsnr)
|
||||
qual=0.0
|
||||
if(iaptype.eq.8) qual=1.
|
||||
fsig=fc_synced - 1.5*baud
|
||||
if(ex) then
|
||||
inquire(file='decdata',exist=decdata_exists)
|
||||
if(decdata_exists) then
|
||||
write(21,3021) nutc,icand,itry,nsyncoh,iaptype, &
|
||||
ijitter,ntype,nsync_qual,nharderrors,dmin, &
|
||||
ijitter,ntype,Keff,nsync_qual,nharderrors,dmin, &
|
||||
sync,xsnr,xdt,fsig,w50,trim(msg)
|
||||
3021 format(i6.6,6i3,2i4,f6.1,f7.2,f6.1,f6.2,f7.1,f7.3,1x,a)
|
||||
3021 format(i6.6,6i3,3i4,f6.1,f9.2,f6.1,f6.2,f7.1,f7.3,1x,a)
|
||||
flush(21)
|
||||
endif
|
||||
call this%callback(nutc,smax1,nsnr,xdt,fsig,msg, &
|
||||
@ -604,6 +607,7 @@ contains
|
||||
enddo ! istart jitter
|
||||
800 enddo !candidate list
|
||||
enddo ! noise blanker loop
|
||||
|
||||
if(new_callsign) then ! re-write the fst4w_calls.txt file
|
||||
open(42,file=trim(data_dir)//'/fst4w_calls.txt',status='unknown')
|
||||
do i=1,nwcalls
|
||||
@ -611,6 +615,7 @@ contains
|
||||
enddo
|
||||
close(42)
|
||||
endif
|
||||
|
||||
900 return
|
||||
end subroutine decode
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user