mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-12-23 19:25:37 -05:00
Implement "matched filter on s3(64,63)" as the criterion for hinted
(aka experience-based) decoding. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6256 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor
parent
d7a4609314
commit
56a58fe6ab
@ -1,5 +1,5 @@
|
||||
subroutine decode65a(dd,npts,newdat,nqd,f0,nflip,mode65,ntrials, &
|
||||
naggressive,ndepth,nexp_decode,sync2,a,dt,nsf,nhist,decoded)
|
||||
naggressive,ndepth,nexp_decode,sync2,a,dt,nft,qual,nhist,decoded)
|
||||
|
||||
! Apply AFC corrections to a candidate JT65 signal, then decode it.
|
||||
|
||||
@ -74,7 +74,7 @@ subroutine decode65a(dd,npts,newdat,nqd,f0,nflip,mode65,ntrials, &
|
||||
|
||||
call timer('dec65b ',0)
|
||||
call decode65b(s2,nflip,mode65,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
nqd,nsf,nhist,decoded)
|
||||
nqd,nft,qual,nhist,decoded)
|
||||
dt=dtbest !return new, improved estimate of dt
|
||||
call timer('dec65b ',1)
|
||||
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
subroutine decode65b(s2,nflip,mode65,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
nqd,nsf,nhist,decoded)
|
||||
nqd,nft,qual,nhist,decoded)
|
||||
|
||||
real s2(66,126)
|
||||
real s3(64,63)
|
||||
@ -23,15 +23,15 @@ subroutine decode65b(s2,nflip,mode65,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
enddo
|
||||
|
||||
nadd=mode65
|
||||
call extract(s3,nadd,nqd,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
ncount,nhist,decoded,ltext,nsf) !Extract the message
|
||||
call extract(s3,nadd,nqd,ntrials,naggressive,ndepth, &
|
||||
ncount,nhist,decoded,ltext,nft,qual) !Extract the message
|
||||
|
||||
! Suppress "birdie messages" and other garbage decodes:
|
||||
if(decoded(1:7).eq.'000AAA ') ncount=-1
|
||||
if(decoded(1:7).eq.'0L6MWK ') ncount=-1
|
||||
if(nflip.lt.0 .and. ltext) ncount=-1
|
||||
if(ncount.lt.0) then
|
||||
nsf=0
|
||||
nft=0
|
||||
decoded=' '
|
||||
endif
|
||||
|
||||
|
||||
@ -38,6 +38,7 @@ subroutine demod64a(s3,nadd,afac1,mrsym,mrprob,mr2sym,mr2prob,ntest,nlow)
|
||||
i1=i !Most reliable
|
||||
endif
|
||||
enddo
|
||||
if(psum.eq.0.0) psum=1.e-6
|
||||
|
||||
s2=-1.e30
|
||||
do i=1,64
|
||||
@ -47,7 +48,7 @@ subroutine demod64a(s3,nadd,afac1,mrsym,mrprob,mr2sym,mr2prob,ntest,nlow)
|
||||
endif
|
||||
enddo
|
||||
p1=s1/psum !Use these for sfrsd
|
||||
p2=s2/psum !
|
||||
p2=s2/psum !...
|
||||
mrsym(j)=i1-1
|
||||
mr2sym(j)=i2-1
|
||||
mrprob(j)=scale*p1
|
||||
|
||||
@ -1,29 +1,27 @@
|
||||
subroutine exp_decode65(mrsym,mrprob,mr2sym,nexp_decode,nhard,nsoft,nbest, &
|
||||
correct)
|
||||
subroutine exp_decode65(s3,mrs,mrs2,mode65,flip,mycall,qual,decoded)
|
||||
|
||||
use packjt
|
||||
use prog_args
|
||||
parameter (NMAX=10000)
|
||||
real s3(64,63)
|
||||
real pp(NMAX)
|
||||
integer*1 sym1(0:62,NMAX)
|
||||
integer mrsym(0:62),mr2sym(0:62),mrprob(0:62)
|
||||
integer*1 sym2(0:62,NMAX)
|
||||
integer mrs(63),mrs2(63)
|
||||
integer dgen(12),sym(0:62),sym_rev(0:62)
|
||||
integer test(0:62)
|
||||
integer correct(0:62)
|
||||
character*6 mycall,hiscall(NMAX)
|
||||
character*4 hisgrid(NMAX)
|
||||
character callsign*12,grid*4
|
||||
character*180 line
|
||||
character ceme*3,msg*22
|
||||
character*22 msg0(1000),decoded
|
||||
logical*1 eme(NMAX)
|
||||
logical first
|
||||
data first/.true./
|
||||
save first,sym1,nused
|
||||
save first,sym1,nused,msg0,sym2
|
||||
|
||||
!###
|
||||
mycall='VK7MO' !### TEMPORARY ###
|
||||
if(first) then
|
||||
neme=1
|
||||
|
||||
open(23,file=trim(data_dir)//'/CALL3.TXT',status='unknown')
|
||||
icall=0
|
||||
j=0
|
||||
@ -55,42 +53,84 @@ subroutine exp_decode65(mrsym,mrprob,mr2sym,nexp_decode,nhard,nsoft,nbest, &
|
||||
j=0
|
||||
do i=1,ncalls
|
||||
if(neme.eq.1 .and. (.not.eme(i))) cycle
|
||||
j=j+1
|
||||
msg=mycall//' '//hiscall(i)//' '//hisgrid(i)
|
||||
call fmtmsg(msg,iz)
|
||||
call packmsg(msg,dgen,itype) !Pack message into 72 bits
|
||||
call rs_encode(dgen,sym_rev) !RS encode
|
||||
sym(0:62)=sym_rev(62:0:-1)
|
||||
sym1(0:62,j)=sym
|
||||
|
||||
!### Special for tests ###
|
||||
do isnr=-20,-30,-1
|
||||
j=j+1
|
||||
msg=mycall//' '//hiscall(i)//' '//hisgrid(i)
|
||||
write(msg(14:18),"(i3,' ')") isnr
|
||||
call fmtmsg(msg,iz)
|
||||
call packmsg(msg,dgen,itype) !Pack message into 72 bits
|
||||
call rs_encode(dgen,sym_rev) !RS encode
|
||||
sym(0:62)=sym_rev(62:0:-1)
|
||||
sym1(0:62,j)=sym
|
||||
|
||||
call interleave63(sym_rev,1) !Interleave channel symbols
|
||||
call graycode(sym_rev,63,1,sym_rev) !Apply Gray code
|
||||
sym2(0:62,j)=sym_rev(0:62)
|
||||
msg0(j)=msg
|
||||
enddo
|
||||
|
||||
enddo
|
||||
nused=j
|
||||
first=.false.
|
||||
endif
|
||||
!###
|
||||
|
||||
nbest=999999
|
||||
do j=1,nused
|
||||
test=sym1(0:62,j)
|
||||
nh=0
|
||||
ns=0
|
||||
do i=0,62
|
||||
k=62-i
|
||||
if(mrsym(k).ne.test(i)) then
|
||||
nh=nh+1
|
||||
if(mr2sym(k).ne.test(i)) ns=ns+mrprob(k)
|
||||
endif
|
||||
enddo
|
||||
ns=63*ns/sum(mrprob)
|
||||
|
||||
if(nh+ns.lt.nbest) then
|
||||
nhard=nh
|
||||
nsoft=ns
|
||||
nbest=nhard+nsoft
|
||||
ncandidates=0
|
||||
ntry=0
|
||||
correct=test
|
||||
endif
|
||||
ref0=0.
|
||||
do j=1,63
|
||||
ref0=ref0 + s3(mrs(j)+1,j)
|
||||
enddo
|
||||
|
||||
p1=-1.e30
|
||||
p2=-1.e30
|
||||
ip1=1 !Silence compiler warning
|
||||
do k=1,nused
|
||||
pp(k)=0.
|
||||
if(k.ge.2 .and. k.le.64 .and. flip.lt.0.0) cycle
|
||||
! Test all messages if flip=+1; skip the CQ messages if flip=-1.
|
||||
if(flip.gt.0.0 .or. msg0(k)(1:3).ne.'CQ ') then
|
||||
sum=0.
|
||||
ref=ref0
|
||||
do j=1,63
|
||||
! i=ncode(j,k)+1
|
||||
i=sym2(j-1,k)+1
|
||||
sum=sum + s3(i,j)
|
||||
if(i.eq.mrs(j)+1) ref=ref - s3(i,j) + s3(mrs2(j)+1,j)
|
||||
enddo
|
||||
p=sum/ref
|
||||
pp(k)=p
|
||||
if(p.gt.p1) then
|
||||
p1=p
|
||||
ip1=k
|
||||
endif
|
||||
endif
|
||||
! write(*,3001) k,p,msg0(k)
|
||||
!3001 format(i5,f10.3,2x,a22)
|
||||
enddo
|
||||
|
||||
do i=1,nused
|
||||
if(pp(i).gt.p2 .and. pp(i).ne.p1) p2=pp(i)
|
||||
enddo
|
||||
|
||||
! ### DO NOT REMOVE ###
|
||||
! call cs_lock('deep65')
|
||||
rewind 77
|
||||
write(77,*) p1,p2
|
||||
call flush(77)
|
||||
! call cs_unlock
|
||||
! ### Works OK without it (in both Windows and Linux) if compiled
|
||||
! ### without optimization. However, in Windows this is a colossal
|
||||
! ### pain because of the way F2PY wants to run the compile step.
|
||||
|
||||
bias=max(1.12*p2,0.335)
|
||||
if(mode65.eq.2) bias=max(1.08*p2,0.405)
|
||||
if(mode65.ge.4) bias=max(1.04*p2,0.505)
|
||||
|
||||
if(p2.eq.p1 .and. p1.ne.-1.e30) stop 'Error in deep65'
|
||||
qual=100.0*(p1-bias)
|
||||
if(qual.lt.0.0) qual=0.0
|
||||
decoded=' '
|
||||
if(qual.ge.1.0) decoded=msg0(ip1)
|
||||
|
||||
return
|
||||
end subroutine exp_decode65
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
subroutine extract(s3,nadd,nqd,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
ncount,nhist,decoded,ltext,nsf)
|
||||
subroutine extract(s3,nadd,nqd,ntrials,naggressive,ndepth, &
|
||||
ncount,nhist,decoded,ltext,nft,qual)
|
||||
|
||||
! Input:
|
||||
! s3 64-point spectra for each of 63 data symbols
|
||||
@ -11,28 +11,32 @@ subroutine extract(s3,nadd,nqd,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
! nhist maximum number of identical symbol values
|
||||
! decoded decoded message (if ncount >=0)
|
||||
! ltext true if decoded message is free text
|
||||
! nsf 0=no decode; 1=BM decode; 2=KV decode
|
||||
! nft 0=no decode; 1=FT decode; 2=hinted decode
|
||||
|
||||
use prog_args !shm_key, exe_dir, data_dir
|
||||
use packjt
|
||||
|
||||
real s3(64,63)
|
||||
character decoded*22
|
||||
character*6 mycall
|
||||
integer dat4(12)
|
||||
integer mrsym(63),mr2sym(63),mrprob(63),mr2prob(63)
|
||||
integer mrs(63),mrs2(63)
|
||||
integer correct(63),tmp(63)
|
||||
integer param(0:7)
|
||||
integer indx(0:62)
|
||||
real*8 tt
|
||||
logical nokv,ltext
|
||||
common/chansyms65/correct
|
||||
common/test000/param !### TEST ONLY ###
|
||||
data nokv/.false./,nsec1/0/
|
||||
save
|
||||
|
||||
qual=0.
|
||||
nbirdie=20
|
||||
npct=50
|
||||
afac1=1.1
|
||||
nsf=0
|
||||
nft=0
|
||||
nfail=0
|
||||
decoded=' '
|
||||
call pctile(s3,4032,npct,base)
|
||||
@ -54,6 +58,9 @@ subroutine extract(s3,nadd,nqd,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
go to 1
|
||||
endif
|
||||
|
||||
mrs=mrsym
|
||||
mrs2=mr2sym
|
||||
|
||||
call graycode65(mrsym,63,-1) !Remove gray code
|
||||
call interleave63(mrsym,-1) !Remove interleaving
|
||||
call interleave63(mrprob,-1)
|
||||
@ -72,22 +79,35 @@ subroutine extract(s3,nadd,nqd,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
nhard=param(1)
|
||||
nsoft=param(2)
|
||||
nerased=param(3)
|
||||
nsofter=param(4)
|
||||
ntotal=param(5)
|
||||
|
||||
if(nhard.lt.0 .and. ndepth.ge.5) then
|
||||
nhard_max=44
|
||||
nd_a=72 + naggressive
|
||||
if(nhard.le.nhard_max .and. ntotal.le.nd_a) nft=1
|
||||
|
||||
! print*,'AAA',ndepth
|
||||
if(nft.eq.0 .and. ndepth.ge.5) then
|
||||
! print*,'BBB',ndepth
|
||||
call timer('exp_deco',0)
|
||||
call exp_decode65(mrsym,mrprob,mr2sym,nexp_decode,nhard,nsoft,nbest, &
|
||||
correct)
|
||||
if(nbest.gt.72+2*naggressive) then
|
||||
nhard=-1
|
||||
mode65=1
|
||||
flip=1.0
|
||||
mycall='K1ABC' !### TEMPORARY ###
|
||||
call exp_decode65(s3,mrs,mrs2,mode65,flip,mycall,qual,decoded)
|
||||
if(qual.ge.1.0) then
|
||||
nft=2
|
||||
else
|
||||
param=0
|
||||
ntry=0
|
||||
endif
|
||||
call timer('exp_deco',1)
|
||||
go to 900
|
||||
endif
|
||||
|
||||
ndone=ndone+1
|
||||
ncount=-1
|
||||
decoded=' '
|
||||
ltext=.false.
|
||||
if(nhard.ge.0) then
|
||||
if(nft.gt.0) then
|
||||
!turn the corrected symbol array into channel symbols for subtraction
|
||||
!pass it back to jt65a via common block "chansyms65"
|
||||
do i=1,12
|
||||
@ -100,14 +120,13 @@ subroutine extract(s3,nadd,nqd,ntrials,naggressive,ndepth,nexp_decode, &
|
||||
call interleave63(correct,63,1)
|
||||
call graycode65(correct,63,1)
|
||||
call unpackmsg(dat4,decoded) !Unpack the user message
|
||||
! open(43,file='stats.dat',access='append',status='unknown')
|
||||
! write(43,*) nhard,nsoft,nerased,ntry
|
||||
! close(43)
|
||||
ncount=0
|
||||
if(iand(dat4(10),8).ne.0) ltext=.true.
|
||||
nsf=1
|
||||
endif
|
||||
900 continue
|
||||
if(nft.eq.1 .and. nhard.lt.0) decoded=' '
|
||||
! write(*,3300) nft,nhard,ntotal,int(qual),decoded
|
||||
!3300 format(4i5,2x,a22)
|
||||
|
||||
return
|
||||
end subroutine extract
|
||||
|
||||
@ -23,10 +23,11 @@ subroutine fillcom(nutc0,ndepth0,nrxfreq,mode,tx9,flow,fsplit,fhigh)
|
||||
nzhsym=181
|
||||
ndepth=ndepth0
|
||||
dttol=3.0
|
||||
minsync=-1 !### TEST ONLY
|
||||
|
||||
n2pass=1
|
||||
nranera=8
|
||||
naggressive=10
|
||||
nranera=10 !ntrials=100000
|
||||
naggressive=3
|
||||
nrobust=0
|
||||
|
||||
if (tx9) then
|
||||
|
||||
@ -27,6 +27,8 @@ subroutine jt65a(dd0,npts,newdat,nutc,nf1,nf2,nfqso,ntol,nsubmode, &
|
||||
type(decode) dec(30)
|
||||
common/decstats/ntry65a,ntry65b,n65a,n65b,num9,numfano
|
||||
common/steve/thresh0
|
||||
common/test000/ncandidates,nhard_min,nsoft_min,nera_best,nsofter_min, &
|
||||
ntotal_min,ntry !### TEST ONLY ###
|
||||
save
|
||||
|
||||
dd=dd0
|
||||
@ -87,16 +89,13 @@ subroutine jt65a(dd0,npts,newdat,nutc,nf1,nf2,nfqso,ntol,nsubmode, &
|
||||
freq=ca(icand)%freq
|
||||
dtx=ca(icand)%dt
|
||||
sync1=ca(icand)%sync
|
||||
|
||||
if(ipass.eq.1) ntry65a=ntry65a + 1
|
||||
if(ipass.eq.2) ntry65b=ntry65b + 1
|
||||
call timer('decod65a',0)
|
||||
call decode65a(dd,npts,newdat,nqd,freq,nflip,mode65,nvec, &
|
||||
naggressive,ndepth,nexp_decode,sync2,a,dtx,nsf,nhist,decoded)
|
||||
naggressive,ndepth,nexp_decode,sync2,a,dtx,nft,qual,nhist,decoded)
|
||||
call timer('decod65a',1)
|
||||
!write(*,*) icand,freq+a(1),dtx,sync1,sync2
|
||||
if(decoded.eq.decoded0) cycle !Don't display dupes
|
||||
|
||||
if(decoded.eq.decoded0 .and. minsync.ge.0) cycle !Don't display dupes
|
||||
if(decoded.ne.' ' .or. minsync.lt.0) then
|
||||
if( nsubtract .eq. 1 ) then
|
||||
call timer('subtr65 ',0)
|
||||
@ -114,9 +113,12 @@ subroutine jt65a(dd0,npts,newdat,nutc,nf1,nf2,nfqso,ntol,nsubmode, &
|
||||
!$omp critical(decode_results)
|
||||
ndupe=0 ! de-dedupe
|
||||
do i=1, ndecoded
|
||||
if( decoded==dec(i)%decoded ) ndupe=1
|
||||
if(decoded==dec(i)%decoded) then
|
||||
ndupe=1
|
||||
exit
|
||||
endif
|
||||
enddo
|
||||
if(ndupe.ne.1) then
|
||||
if(ndupe.ne.1 .or. minsync.lt.0) then
|
||||
if(ipass.eq.1) n65a=n65a + 1
|
||||
if(ipass.eq.2) n65b=n65b + 1
|
||||
ndecoded=ndecoded+1
|
||||
@ -124,14 +126,22 @@ subroutine jt65a(dd0,npts,newdat,nutc,nf1,nf2,nfqso,ntol,nsubmode, &
|
||||
dec(ndecoded)%dt=dtx
|
||||
dec(ndecoded)%sync=sync2
|
||||
dec(ndecoded)%decoded=decoded
|
||||
nqual=qual
|
||||
if(nqual.gt.10) nqual=10
|
||||
write(*,1010) nutc,nsnr,dtx-1.0,nfreq,decoded
|
||||
1010 format(i4.4,i4,f5.1,i5,1x,'#',1x,a22)
|
||||
write(13,1012) nutc,nint(sync1),nsnr,dtx-1.0,float(nfreq),ndrift, &
|
||||
decoded,nsf
|
||||
decoded,nft
|
||||
1012 format(i4.4,i4,i5,f6.1,f8.0,i4,3x,a22,' JT65',i4)
|
||||
call flush(6)
|
||||
call flush(13)
|
||||
write(79,3001) nutc,nint(sync1),nsnr,dtx-1.0,nfreq,ncandidates, &
|
||||
nhard_min,ntotal_min,ntry,naggressive,nft,nqual,decoded
|
||||
3001 format(i4.4,i3,i4,f6.2,i5,i6,i3,i4,i8,i3,i2,i3,1x,a22)
|
||||
flush(79)
|
||||
endif
|
||||
decoded0=decoded
|
||||
if(decoded0.eq.' ') decoded0='*'
|
||||
!$omp end critical(decode_results)
|
||||
endif
|
||||
enddo !candidate loop
|
||||
|
||||
Loading…
Reference in New Issue
Block a user