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WSJT-X
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More cleanup of JT4 stuff. 

Improvement of message averaging, by correcting a flaw.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@2968 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2013-01-22 21:04:47 +00:00
parent a3ea290673
commit 3bae368d89
8 changed files with 240 additions and 43 deletions
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19
lib/decode24.f90
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@ -11,18 +11,18 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
real*8 dt,df,phi,f0,dphi,twopi,phi1,dphi1
complex*16 cz,cz1,c0,c1
integer*1 symbol(207)
real*4 rsymbol(207)
real*4 rsymbol(207,7)
integer nsum(7)
integer*1 data1(13) !Decoded data (8-bit bytes)
integer data4a(9) !Decoded data (8-bit bytes)
integer data4(12) !Decoded data (6-bit bytes)
integer amp,delta
integer mettab(0:255,0:1) !Metric table
integer fano
integer nch(7)
integer npr2(207)
! common/ave/ppsave(64,63,MAXAVE),nflag(MAXAVE),nsave,iseg(MAXAVE)
data mode0/-999/
data nsum/0/,rsymbol/207*0.0/
data nsum/7*0/,rsymbol/1449*0.0/
data npr2/ &
0,0,0,0,1,1,0,0,0,1,1,0,1,1,0,0,1,0,1,0,0,0,0,0,0,0,1,1,0,0, &
0,0,0,0,0,0,0,0,0,0,1,0,1,1,0,1,1,0,1,0,1,1,1,1,1,0,1,0,0,0, &
@ -35,7 +35,7 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
data nch/1,2,4,9,18,36,72/
save mettab,mode0,nsum,rsymbol
if(mode.ne.mode0) call genmet24(mode,mettab)
if(mode.ne.mode0) call getmet24(mode,mettab)
mode0=mode
twopi=8*atan(1.d0)
dt=2.d0/11025 !Sample interval (2x downsampled data)
@ -44,7 +44,6 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
amp=15
istart=nint(dtx/dt) !Start index for synced FFTs
if(istart.lt.0) istart=0
idfbest=0
nchips=0
ich=0
@ -53,10 +52,8 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
! Compute soft symbols using differential BPSK demodulation
c0=0. !### C0=amp ???
k=istart
fac=1.e-4
phi=0.d0
phi1=0.d0
ang0=0.
40 ich=ich+1
nchips=nch(ich)
@ -106,14 +103,14 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
if(i4.gt.127) i4=i4-256
if(j.ge.1) then
symbol(j)=i4
rsymbol(j)=rsymbol(j) + rsym
rsymbol(j,ich)=rsymbol(j,ich) + rsym
endif
enddo
!### The following does simple message averaging:
nsum=nsum+1
nsum(ich)=nsum(ich)+1
do j=1,207
r=rsymbol(j)/nsum + 128.
r=rsymbol(j,ich)/nsum(ich) + 128.
if(r.gt.255.0) r=255.0
if(r.lt.0.0) r=0.0
i4=nint(r)
@ -123,7 +120,7 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
!###
nbits=72+31
delta=100
delta=50
limit=100000
ncycles=0
ncount=-1

1
lib/decode9.f90
View File

@ -62,7 +62,6 @@ subroutine decode9(i1SoftSymbols,limit,nlim,msg)
mettab(i,0)=nint(scale*(xx0(i)-bias))
if(i.ge.1) mettab(256-i,1)=mettab(i,0)
enddo
close(19)
first=.false.
endif

173
lib/deep24.f90 Normal file
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@ -0,0 +1,173 @@
subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
! Have barely begun converting this from JT65 to JT4
parameter (MAXCALLS=7000,MAXRPT=63)
real s3(64,63)
character callsign*12,grid*4,message*22,hisgrid*6,c*1,ceme*3
character*12 mycall,hiscall
character mycall0*12,hiscall0*12,hisgrid0*6
character*22 decoded
character*22 testmsg(2*MAXCALLS + 2 + MAXRPT)
character*15 callgrid(MAXCALLS)
character*180 line
character*4 rpt(MAXRPT)
integer ncode(63,2*MAXCALLS + 2 + MAXRPT)
real pp(2*MAXCALLS + 2 + MAXRPT)
common/mrscom/ mrs(63),mrs2(63)
common/c3com/ mcall3a
data neme0/-99/
data rpt/'-01','-02','-03','-04','-05', &
'-06','-07','-08','-09','-10', &
'-11','-12','-13','-14','-15', &
'-16','-17','-18','-19','-20', &
'-21','-22','-23','-24','-25', &
'-26','-27','-28','-29','-30', &
'R-01','R-02','R-03','R-04','R-05', &
'R-06','R-07','R-08','R-09','R-10', &
'R-11','R-12','R-13','R-14','R-15', &
'R-16','R-17','R-18','R-19','R-20', &
'R-21','R-22','R-23','R-24','R-25', &
'R-26','R-27','R-28','R-29','R-30', &
'RO','RRR','73'/
save
if(mycall.eq.mycall0 .and. hiscall.eq.hiscall0 .and. &
hisgrid.eq.hisgrid0 .and. mcall3a.eq.0 .and. neme.eq.neme0) go to 30
mcall3a=0
rewind 23
k=0
icall=0
do n=1,MAXCALLS
if(n.eq.1) then
callsign=hiscall
do i=4,12
if(ichar(callsign(i:i)).eq.0) callsign(i:i)=' '
enddo
grid=hisgrid(1:4)
if(ichar(grid(3:3)).eq.0) grid(3:3)=' '
if(ichar(grid(4:4)).eq.0) grid(4:4)=' '
else
read(23,1002,end=20) line
1002 format (A80)
if(line(1:4).eq.'ZZZZ') go to 20
if(line(1:2).eq.'//') go to 10
i1=index(line,',')
if(i1.lt.4) go to 10
i2=index(line(i1+1:),',')
if(i2.lt.5) go to 10
i2=i2+i1
i3=index(line(i2+1:),',')
if(i3.lt.1) i3=index(line(i2+1:),' ')
i3=i2+i3
callsign=line(1:i1-1)
grid=line(i1+1:i2-1)
ceme=line(i2+1:i3-1)
if(neme.eq.1 .and. ceme.ne.'EME') go to 10
endif
icall=icall+1
j1=index(mycall,' ') - 1
if(j1.le.-1) j1=12
if(j1.lt.3) j1=6
j2=index(callsign,' ') - 1
if(j2.le.-1) j2=12
if(j2.lt.3) j2=6
j3=index(mycall,'/') ! j3>0 means compound mycall
j4=index(callsign,'/') ! j4>0 means compound hiscall
callgrid(icall)=callsign(1:j2)
mz=1
! Allow MyCall + HisCall + rpt (?)
if(n.eq.1 .and. j3.lt.1 .and. j4.lt.1 .and. &
flip.gt.0.0 .and. callsign(1:6).ne.' ') mz=MAXRPT+1
do m=1,mz
if(m.gt.1) grid=rpt(m-1)
if(j3.lt.1 .and.j4.lt.1) callgrid(icall)=callsign(1:j2)//' '//grid
message=mycall(1:j1)//' '//callgrid(icall)
k=k+1
testmsg(k)=message
! call encode65(message,ncode(1,k))
if(n.ge.2) then
! Insert CQ message
if(j4.lt.1) callgrid(icall)=callsign(1:j2)//' '//grid
message='CQ '//callgrid(icall)
k=k+1
testmsg(k)=message
! call encode65(message,ncode(1,k))
endif
enddo
10 continue
enddo
20 continue
ntot=k
neme0=neme
30 mycall0=mycall
hiscall0=hiscall
hisgrid0=hisgrid
ref0=0.
do j=1,63
ref0=ref0 + s3(mrs(j),j)
enddo
p1=-1.e30
p2=-1.e30
do k=1,ntot
pp(k)=0.
! Test all messages if flip=+1; skip the CQ messages if flip=-1.
if(flip.gt.0.0 .or. testmsg(k)(1:3).ne.'CQ ') then
sum=0.
ref=ref0
do j=1,63
i=ncode(j,k)+1
sum=sum + s3(i,j)
if(i.eq.mrs(j)) ref=ref - s3(i,j) + s3(mrs2(j),j)
enddo
p=sum/ref
pp(k)=p
if(p.gt.p1) then
p1=p
ip1=k
endif
endif
enddo
do i=1,ntot
if(pp(i).gt.p2 .and. pp(i).ne.p1) p2=pp(i)
enddo
! ### DO NOT REMOVE ###
rewind 77
write(77,*) p1,p2
! ### 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.
if(p2.eq.p1 .and. p1.ne.-1.e30) stop 'Error in deep24'
qual=100.0*(p1-bias)
decoded=' '
c=' '
if(qual.gt.1.0) then
if(qual.lt.6.0) c='?'
decoded=testmsg(ip1)
else
qual=0.
endif
decoded(22:22)=c
! Make sure everything is upper case.
do i=1,22
if(decoded(i:i).ge.'a' .and. decoded(i:i).le.'z') &
decoded(i:i)=char(ichar(decoded(i:i))-32)
enddo
return
end subroutine deep24

2
lib/genmet.f90
View File

@ -1,6 +1,6 @@
program genmet
! Former name: tstprob
! Generate metric table for M-FSK modulation.
character*12 arg
real*4 r(0:255)

27
lib/genmet24.f90
View File

@ -1,27 +0,0 @@
subroutine genmet24(mode,mettab)
! Return appropriate metric table for soft-decision convolutional decoder.
real bias !bias for integer table
integer scale !scale factor for integer table
! Metric table (RxSymbol,TxSymbol)
integer mettab(0:255,0:1)
bias=0.5
scale=10
if(mode.eq.7) then !Non-coherent 2FSK
open(19,file='dmet_10_-1_3.dat',status='old')
else
print*,'Unsupported mode:',mode,' in genmet.'
stop 'genmet'
endif
do i=0,255
read(19,*) junk,d0,d1
mettab(i,0)=nint(scale*(d0-bias))
mettab(i,1)=nint(scale*(d1-bias))
enddo
return
end subroutine genmet24

57
lib/getmet24.f90 Normal file
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@ -0,0 +1,57 @@
subroutine getmet24(mode,mettab)
! Return appropriate metric table for soft-decision convolutional decoder.
! Metric table (RxSymbol,TxSymbol)
integer mettab(0:255,0:1)
real*4 xx0(0:255)
logical first
data first/.true./
data xx0/ &
1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, &
1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, &
1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, &
1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, &
1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, &
1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, 1.000, &
0.988, 1.000, 0.991, 0.993, 1.000, 0.995, 1.000, 0.991, &
1.000, 0.991, 0.992, 0.991, 0.990, 0.990, 0.992, 0.996, &
0.990, 0.994, 0.993, 0.991, 0.992, 0.989, 0.991, 0.987, &
0.985, 0.989, 0.984, 0.983, 0.979, 0.977, 0.971, 0.975, &
0.974, 0.970, 0.970, 0.970, 0.967, 0.962, 0.960, 0.957, &
0.956, 0.953, 0.942, 0.946, 0.937, 0.933, 0.929, 0.920, &
0.917, 0.911, 0.903, 0.895, 0.884, 0.877, 0.869, 0.858, &
0.846, 0.834, 0.821, 0.806, 0.790, 0.775, 0.755, 0.737, &
0.713, 0.691, 0.667, 0.640, 0.612, 0.581, 0.548, 0.510, &
0.472, 0.425, 0.378, 0.328, 0.274, 0.212, 0.146, 0.075, &
0.000,-0.079,-0.163,-0.249,-0.338,-0.425,-0.514,-0.606, &
-0.706,-0.796,-0.895,-0.987,-1.084,-1.181,-1.280,-1.376, &
-1.473,-1.587,-1.678,-1.790,-1.882,-1.992,-2.096,-2.201, &
-2.301,-2.411,-2.531,-2.608,-2.690,-2.829,-2.939,-3.058, &
-3.164,-3.212,-3.377,-3.463,-3.550,-3.768,-3.677,-3.975, &
-4.062,-4.098,-4.186,-4.261,-4.472,-4.621,-4.623,-4.608, &
-4.822,-4.870,-4.652,-4.954,-5.108,-5.377,-5.544,-5.995, &
-5.632,-5.826,-6.304,-6.002,-6.559,-6.369,-6.658,-7.016, &
-6.184,-7.332,-6.534,-6.152,-6.113,-6.288,-6.426,-6.313, &
-9.966,-6.371,-9.966,-7.055,-9.966,-6.629,-6.313,-9.966, &
-5.858,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966, &
-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966, &
-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966, &
-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966, &
-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966, &
-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966,-9.966/
save
if(first) then
bias=0.5
scale=10.0
do i=0,255
mettab(i,0)=nint(scale*(xx0(i)-bias))
if(i.ge.1) mettab(256-i,1)=mettab(i,0)
enddo
first=.false.
endif
return
end subroutine getmet24

2
lib/wsjt24.f90
View File

@ -173,8 +173,6 @@ subroutine wsjt24(dat,npts,cfile6,NClearAve,MinSigdB, &
! write(12,1011) ave1
! write(12,1011) ave2
! call flush(12)
if(lumsg.ne.6) end file 11
! call cs_unlock
900 continue

2
mainwindow.cpp
View File

@ -1,4 +1,4 @@
//--------------------------------------------------------------- MainWindow
//-------------------------------------------------------------- MainWindow
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "devsetup.h"