w4kek/WSJT-X
1
0
Fork 0
mirror of https://github.com/saitohirga/WSJT-X.git synced 2024-11-22 04:11:16 -05:00
Code Issues Packages Projects Releases Wiki Activity

Code for JT4 deep search now working well. (Needs some fine tuning, though.)

Browse Source 
Message averaging has been tested, works well also.
Next: need to integrate these features and back-port into WSJT9.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@2969 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor 2013-01-23 16:25:07 +00:00
parent 3bae368d89
commit fdb3ff464b
8 changed files with 216 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
lib/chkmsg.f90 Normal file
View File

@ -0,0 +1,31 @@
subroutine chkmsg(message,cok,nspecial,flip)
character message*22,cok*3
nspecial=0
flip=1.0
cok=" "
do i=22,1,-1
if(message(i:i).ne.' ') go to 10
enddo
i=22
10 if(i.ge.11) then
if((message(i-3:i).eq.' OOO') .or. (message(20:22).eq.' OO')) then
cok='OOO'
flip=-1.0
if(message(20:22).eq.' OO') then
message=message(1:19)
else
message=message(1:i-4)
endif
endif
endif
if(message(1:2).eq.'RO') nspecial=2
if(message(1:3).eq.'RRR') nspecial=3
if(message(1:2).eq.'73') nspecial=4
return
end subroutine chkmsg

54
lib/decode24.f90
View File

@ -1,17 +1,20 @@
subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
nlim,deepmsg,qual,submode)
deepmsg,qual,submode)
! Decodes JT65 data, assuming that DT and DF have already been determined.
parameter (MAXAVE=120)
real dat(npts) !Raw data
character decoded*22,deepmsg*22
character*12 mycall,hiscall
character*6 hisgrid
character*72 c72
character submode*1
real*8 dt,df,phi,f0,dphi,twopi,phi1,dphi1
complex*16 cz,cz1,c0,c1
integer*1 symbol(207)
real*4 rsymbol(207,7)
real*4 sym(207)
integer nsum(7)
integer*1 data1(13) !Decoded data (8-bit bytes)
integer data4a(9) !Decoded data (8-bit bytes)
@ -46,6 +49,9 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
if(istart.lt.0) istart=0
nchips=0
ich=0
qbest=0.
deepmsg=' '
ichbest=-1
! Should amp be adjusted according to signal strength?
@ -103,20 +109,23 @@ 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,ich)=rsymbol(j,ich) + rsym
! rsymbol(j,ich)=rsymbol(j,ich) + rsym
rsymbol(j,ich)=rsym
sym(j)=rsym
endif
enddo
!### The following does simple message averaging:
nsum(ich)=nsum(ich)+1
do j=1,207
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)
if(i4.gt.127) i4=i4-256
symbol(j)=i4
enddo
! nsum(ich)=nsum(ich)+1
! do j=1,207
! sym(j)=rsymbol(j,ich)/nsum(ich)
! r=sym(j) + 128.
! if(r.gt.255.0) r=255.0
! if(r.lt.0.0) r=0.0
! i4=nint(r)
! if(i4.gt.127) i4=i4-256
! symbol(j)=i4
! enddo
!###
nbits=72+31
@ -129,6 +138,20 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
call fano232(symbol(2),nbits,mettab,delta,limit,data1,ncycles,metric,ncount)
nlim=ncycles/nbits
!### Try deep search
qual=0.
neme=1
mycall='VK7MO'
hiscall='W5LUA'
hisgrid='EM13'
call deep24(sym(2),neme,flip,mycall,hiscall,hisgrid,decoded,qual)
if(qual.gt.qbest) then
qbest=qual
deepmsg=decoded
ichbest=ich
endif
!###
if(ncount.ge.0) go to 100
if(mode.eq.7 .and. nchips.lt.mode4) go to 40
@ -137,27 +160,26 @@ subroutine decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded,ncount, &
if(i4.lt.0) i4=i4+256
data4a(i)=i4
enddo
! call cs_lock('decode24')
write(c72,1100) (data4a(i),i=1,9)
1100 format(9b8.8)
read(c72,1102) data4
1102 format(12b6)
! call cs_unlock
decoded=' '
submode=' '
if(ncount.ge.0) then
call unpackmsg(data4,decoded)
submode=char(ichar('A')+ich-1)
else
decoded=deepmsg
submode=char(ichar('A')+ichbest-1)
qual=qbest
endif
if(decoded(1:6).eq.'000AAA') then
decoded='***WRONG MODE?***'
ncount=-1
endif
qual=0.
deepmsg=' '
! Save symbol spectra for possible decoding of average.
return

53
lib/deep24.f90
View File

@ -1,9 +1,9 @@
subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
subroutine deep24(sym,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)
real*4 sym(206)
character callsign*12,grid*4,message*22,hisgrid*6,c*1,ceme*3
character*12 mycall,hiscall
character mycall0*12,hiscall0*12,hisgrid0*6
@ -12,10 +12,10 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
character*15 callgrid(MAXCALLS)
character*180 line
character*4 rpt(MAXRPT)
integer ncode(63,2*MAXCALLS + 2 + MAXRPT)
integer ncode(206)
real*4 code(206,2*MAXCALLS + 2 + MAXRPT)
real pp(2*MAXCALLS + 2 + MAXRPT)
common/mrscom/ mrs(63),mrs2(63)
common/c3com/ mcall3a
! common/c3com/ mcall3a
data neme0/-99/
data rpt/'-01','-02','-03','-04','-05', &
@ -78,7 +78,7 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
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. &
@ -89,15 +89,16 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
message=mycall(1:j1)//' '//callgrid(icall)
k=k+1
testmsg(k)=message
! call encode65(message,ncode(1,k))
call encode4(message,ncode)
code(1:206,k)=2*ncode(1:206)-1
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))
call encode4(message,ncode)
code(1:206,k)=2*ncode(1:206)-1
endif
enddo
10 continue
@ -110,10 +111,13 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
30 mycall0=mycall
hiscall0=hiscall
hisgrid0=hisgrid
ref0=0.
do j=1,63
ref0=ref0 + s3(mrs(j),j)
sq=0.
do j=1,206
sq=sq + sym(j)**2
enddo
rms=sqrt(sq/206.0)
sym=sym/rms
p1=-1.e30
p2=-1.e30
@ -121,14 +125,11 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
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)
p=0.
do j=1,206
i=code(j,k)+1
p=p + code(j,k)*sym(j)
enddo
p=sum/ref
pp(k)=p
if(p.gt.p1) then
p1=p
@ -142,15 +143,20 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
enddo
! ### DO NOT REMOVE ###
rewind 77
write(77,*) p1,p2
! 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.
bias=1.1*p2
! if(mode65.eq.1) 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 deep24'
qual=100.0*(p1-bias)
qual=10.0*(p1-bias)
decoded=' '
c=' '
@ -169,5 +175,8 @@ subroutine deep24(s3,neme,flip,mycall,hiscall,hisgrid,decoded,qual)
decoded(i:i)=char(ichar(decoded(i:i))-32)
enddo
! write(*,3010) p1,p2,p1-p2,p1/p2,qual,decoded
!3010 format('DS:',5f9.1,2x,a22)
return
end subroutine deep24

20
lib/encode4.f90 Normal file
View File

@ -0,0 +1,20 @@
subroutine encode4(message,ncode)
parameter (MAXCALLS=7000,MAXRPT=63)
integer ncode(206)
character*22 message !Message to be generated
character*3 cok !' ' or 'OOO'
integer dgen(13)
integer*1 data0(13),symbol(216)
logical text
call chkmsg(message,cok,nspecial,flip)
call packmsg(message,dgen,text) !Pack 72-bit message into 12 six-bit symbols
call entail(dgen,data0)
call encode232(data0,206,symbol) !Convolutional encoding
call interleave24(symbol,1) !Apply JT4 interleaving
do i=1,206
ncode(i)=symbol(i)
enddo
end subroutine encode4

86
lib/gen24.f90 Normal file
View File

@ -0,0 +1,86 @@
subroutine gen24(message,mode4,samfac,ntxdf,iwave,nwave,sendingsh,msgsent,nmsg)
! Encode a JT4 message into a wavefile.
parameter (NMAX=60*11025) !Max length of wave file
character*22 message !Message to be generated
character*22 msgsent !Message as it will be received
character*3 cok !' ' or 'OOO'
real*8 t,dt,phi,f,f0,dfgen,dphi,pi,twopi,samfac,tsymbol
integer*2 iwave(NMAX) !Generated wave file
integer sendingsh
integer dgen(13)
integer*1 data0(13),symbol(216)
logical first
include 'prcom2.f'
data first/.true./
save
nsym=207 !Symbols per transmission
if(first) then
do i=1,nsym
pr2(i)=2*npr2(i)-1
enddo
pi=4.d0*atan(1.d0)
twopi=2.d0*pi
first=.false.
endif
call chkmsg(message,cok,nspecial,flip)
call packmsg(message,dgen) !Pack 72-bit message into 12 six-bit symbols
call entail(dgen,data0)
call unpackmsg(dgen,msgsent)
nbytes=(72+31+7)/8
call encode(data0,nbytes,symbol(2)) !Convolutional encoding
symbol(1)=0 !Reference phase
sendingsh=0
if(iand(dgen(10),8).ne.0) sendingsh=-1 !Plain text flag
call interleave24(symbol(2),1) !Apply JT4 interleaving
! Set up necessary constants
tsymbol=2520.d0/11025.d0
dt=1.d0/(samfac*11025.d0)
f0=118*11025.d0/1024 + ntxdf
dfgen=11025.d0/2520 !4.375 Hz
t=0.d0
phi=0.d0
j0=0
ndata=(nsym*11025.d0*samfac*tsymbol)/2
ndata=2*ndata
do i=1,ndata
t=t+dt
j=int(t/tsymbol) + 1 !Symbol number, 1-207
if(j.ne.j0) then
f=f0 + (npr2(j)+2*symbol(j)-1.5) * dfgen * mode4
if(flip.lt.0.0) f=f0+((1-npr2(j))+2*symbol(j)-1.5)*dfgen*mode4
dphi=twopi*dt*f
j0=j
endif
phi=phi+dphi
iwave(i)=32767.0*sin(phi)
enddo
do j=1,5512 !Put another 0.5 sec of silence at end
i=i+1
iwave(i)=0
enddo
nwave=i
if(flip.lt.0.0) then
do i=22,1,-1
if(msgsent(i:i).ne.' ') goto 10
enddo
10 msgsent=msgsent(1:i)//' OOO'
endif
do i=22,1,-1
if(msgsent(i:i).ne.' ') goto 20
enddo
20 nmsg=i
! write(*,3002) (symbol(i),i=1,207)
! 3002 format(70i1)
return
end subroutine gen24

6
lib/wsjt24.f90
View File

@ -92,7 +92,7 @@ subroutine wsjt24(dat,npts,cfile6,NClearAve,MinSigdB, &
endif
call decode24(dat,npts,dtx,dfx,flip,mode,mode4,decoded, &
ncount,nlim,deepmsg,qual,submode)
ncount,deepmsg,qual,submode)
200 kvqual=0
if(ncount.ge.0) kvqual=1
@ -112,8 +112,8 @@ subroutine wsjt24(dat,npts,cfile6,NClearAve,MinSigdB, &
! call cs_lock('wsjt24')
write(line,1010) cfile6,nsync,nsnr,dtx-1.0,jdf,nint(width), &
csync,special,decoded(1:19),cooo,kvqual,nqual,submode,nlim
1010 format(a6,i3,i5,f5.1,i5,i3,1x,a1,1x,a5,a19,1x,a3,i4,i4,1x,a1,i8)
csync,special,decoded(1:19),cooo,kvqual,nqual,submode
1010 format(a6,i3,i5,f5.1,i5,i3,1x,a1,1x,a5,a19,1x,a3,i3,i5,1x,a1)
! Blank all end-of-line stuff if no decode
if(line(31:40).eq.' ') line=line(:30)

6
lib/wsjt24d.f90
View File

@ -5,6 +5,7 @@ program wsjt24d
character*12 arg
real ccfblue(-5:540) !X-cor function in JT65 mode (blue line)
real ccfred(450) !Average spectrum of the whole file
integer dftolerance
nargs=iargc()
if(nargs.ne.2) then
@ -16,6 +17,7 @@ program wsjt24d
call getarg(2,arg)
read(arg,*) ifile2
open(23,file='CALL3.TXT',status='old')
open(50,file='vk7mo.dat',form='unformatted',status='old')
do ifile=1,ifile2
@ -27,6 +29,10 @@ program wsjt24d
! write(*,3000) ifile,cfile6,jz,mode,mode4,idf
!3000 format(i3,2x,a6,i10,3i5)
dftolerance=100
nfreeze=1
neme=0
! call wsjt24(dat(4097),jz-4096,cfile6,NClearAve,MinSigdB,DFTolerance, &
call wsjt24(dat,jz,cfile6,NClearAve,MinSigdB,DFTolerance, &
NFreeze,mode,mode4,Nseg,MouseDF2,NAgain,idf,lumsg,lcum,nspecial, &

2
mainwindow.cpp
View File

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