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AP decoding basically works. Make data_dir setting work on the Mac.

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This commit is contained in:
Steve Franke 2019-02-07 18:48:38 -06:00
parent ecbeda5297
commit cbfcb76193
7 changed files with 694 additions and 125 deletions
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1
CMakeLists.txt
View File

@ -514,6 +514,7 @@ set (wsjt_FSRCS
lib/ft4/ft4sim_mult.f90
lib/ft4/ft4d.f90
lib/ft4/ft4_decode.f90
lib/ft4/ft4_downsample.f90
lib/77bit/my_hash.f90
lib/wsprd/osdwspr.f90
lib/ft8/osd174_91.f90

4
lib/ft4/clockit.f90
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@ -102,7 +102,9 @@ subroutine clockit(dname,k)
return
entry clockit2(data_dir)
fname=trim(data_dir)//'/clockit.out'
l1=index(data_dir,char(0))-1
data_dir(l1+1:l1+1)='/'
fname=data_dir(1:l1+1)//'clockit.out'
return
end subroutine clockit

265
lib/ft4/ft4_decode.f90
View File

@ -1,18 +1,18 @@
subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,mycall, &
hiscall,nrx,line,data_dir)
subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso,iwave, &
ndecodes,mycall,hiscall,nrx,line,data_dir)
use packjt77
include 'ft4_params.f90'
parameter (NSS=NSPS/NDOWN)
character message*37,msgsent*37
character c77*77
character*61 line,linex(100)
character*37 decodes(100)
character*512 data_dir,fname
character*17 cdatetime0
character*6 mycall,hiscall
character*6 mycall0,hiscall0
character*12 mycall,hiscall
character*12 mycall0,hiscall0
character*6 hhmmss
complex cd2(0:NMAX/NDOWN-1) !Complex waveform
@ -26,15 +26,16 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
real bmeta(2*NN),bmetb(2*NN),bmetc(2*NN)
real a(5)
real llr(2*ND),llr2(2*ND),llra(2*ND),llrb(2*ND),llrc(2*ND)
real llr(2*ND),llra(2*ND),llrb(2*ND),llrc(2*ND),llrd(2*ND)
real s2(0:255)
real candidate(3,100)
real savg(NH1),sbase(NH1)
integer apbits(58)
integer nrxx(100)
integer icos4a(0:3),icos4b(0:3),icos4c(0:3),icos4d(0:3)
integer*2 iwave(NMAX) !Generated full-length waveform
integer*1 message77(77),rvec(77),apbits(2*ND),apmask(2*ND),cw(2*ND)
integer*1 message77(77),rvec(77),apmask(2*ND),cw(2*ND)
integer*1 hbits(2*NN)
integer graymap(0:3)
integer ip(1)
@ -42,12 +43,11 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
integer naptypes(0:5,4) ! nQSOProgress, decoding pass
integer mcq(29),mcqru(29),mcqfd(29),mcqtest(29)
integer mrrr(19),m73(19),mrr73(19)
integer mcall(29),hcall(29)
logical unpk77_success
logical one(0:255,0:7) ! 256 4-symbol sequences, 8 bits
logical first
data icos4a/0,1,3,2/
data icos4b/1,0,2,3/
data icos4c/2,3,1,0/
@ -62,9 +62,10 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
data m73/0,1,1,1,1,1,1,0,1,0,0,1,0,1,0,0,0,0,1/
data mrr73/0,1,1,1,1,1,1,0,0,1,1,1,0,1,0,1,0,0,1/
data rvec/0,1,0,0,1,0,1,0,0,1,0,1,1,1,1,0,1,0,0,0,1,0,0,1,1,0,1,1,0, &
1,0,0,1,0,1,1,0,0,0,0,1,0,0,0,1,0,1,0,0,1,1,1,1,0,0,1,0,1, &
0,1,0,1,0,1,1,0,1,1,1,1,1,0,0,0,1,0,1/
save fs,dt,tt,txt,twopi,h,one,first,nrxx,linex,apbits,nappasses,naptypes,mycall0,hiscall0
1,0,0,1,0,1,1,0,0,0,0,1,0,0,0,1,0,1,0,0,1,1,1,1,0,0,1,0,1, &
0,1,0,1,0,1,1,0,1,1,1,1,1,0,0,0,1,0,1/
save fs,dt,tt,txt,twopi,h,one,first,nrxx,linex,apbits,nappasses,naptypes, &
mycall0,hiscall0,ncontest0
call clockit('ft4_deco',0)
hhmmss=cdatetime0(8:13)
@ -75,28 +76,56 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
tt=NSPS*dt !Duration of "itone" symbols (s)
txt=NZ*dt !Transmission length (s) without ramp up/down
twopi=8.0*atan(1.0)
h=1.0
h=1.0
one=.false.
do i=0,255
do j=0,7
if(iand(i,2**j).ne.0) one(i,j)=.true.
enddo
enddo
mcq=2*mod(mcq+rvec(1:29),2)-1
mcqfd=2*mod(mcqfd+rvec(1:29),2)-1
mcqru=2*mod(mcqru+rvec(1:29),2)-1
mcqtest=2*mod(mcqtest+rvec(1:29),2)-1
mrrr=2*mod(mrrr+rvec(59:77),2)-1
m73=2*mod(m73+rvec(59:77),2)-1
mrr73=2*mod(mrr73+rvec(59:77),2)-1
nappasses(0)=2
nappasses(1)=2
nappasses(2)=2
nappasses(3)=2
nappasses(4)=2
nappasses(5)=3
! iaptype
!------------------------
! 1 CQ ??? ??? (29+3=32 ap bits)
! 2 MyCall ??? ??? (29+3=32 ap bits)
! 3 MyCall DxCall ??? (58+3=61 ap bits)
! 4 MyCall DxCall RRR (77 ap bits)
! 5 MyCall DxCall 73 (77 ap bits)
! 6 MyCall DxCall RR73 (77 ap bits)
naptypes(0,1:4)=(/1,2,0,0/) ! Tx6 selected (CQ)
naptypes(1,1:4)=(/2,3,0,0/) ! Tx1
naptypes(2,1:4)=(/2,3,0,0/) ! Tx2
naptypes(3,1:4)=(/3,6,0,0/) ! Tx3
naptypes(4,1:4)=(/3,6,0,0/) ! Tx4
naptypes(5,1:4)=(/3,1,2,0/) ! Tx5
first=.false.
endif
if(mycall.ne.mycall0 .or. hiscall.ne.hiscall0) then
message=trim(mycall)//' '//trim(hiscall)//' '//'RR73'
i3=-1
n3=-1
call pack77(message,i3,n3,c77)
call unpack77(c77,0,msgsent,unpk77_success)
if(message.ne.msgsent) write(*,*) 'ERROR setting AP message'
read(c77,"(77i1)") message77
message77=mod(message77+rvec,2)
call encode174_91(message77,cw)
mcall=cw(1:29)
hcall=cw(30:58)
call ft8apset(mycall,hiscall,apbits)
if(apbits( 1).ne.99) then
apbits( 1:29)=(apbits(1:29)+1)/2
apbits( 1:29)=2*mod(apbits( 1:29)+rvec( 1:29),2)-1
endif
if(apbits(30).ne.99) then
apbits(30:58)=(apbits(30:58)+1)/2
apbits(30:58)=2*mod(apbits(30:58)+rvec(30:58),2)-1
endif
mycall0=mycall
hiscall0=hiscall
endif
@ -110,7 +139,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
fb=nfb
call clockit('getcand4',0)
call getcandidates4(iwave,fa,fb,syncmin,nfqso,maxcand,savg,candidate, &
ncand,sbase)
ncand,sbase)
call clockit('getcand4',1)
ndecodes=0
@ -140,7 +169,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
ibmin=max(0,ibest-5)
ibmax=min(ibest+5,NMAX/NDOWN-1)
ibstp=1
endif
endif
ibest=-1
smax=-99.
idfbest=0
@ -151,7 +180,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
call clockit('twkfreq1',0)
call twkfreq1(ctwk,4*NSS,fs,a,ctwk2)
call clockit('twkfreq1',1)
call clockit('sync4d ',0)
do istart=ibmin,ibmax,ibstp
call sync4d(cd2,istart,ctwk2,1,sync,sync2) !Find sync power
@ -162,7 +191,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
endif
enddo
call clockit('sync4d ',1)
enddo
enddo
f0=f0+real(idfbest)
@ -202,13 +231,12 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
enddo
nsync=is1+is2+is3+is4 !Number of hard sync errors, 0-16
if(smax .lt. 0.7 .or. nsync .lt. 8) cycle
do nseq=1,3 !Try coherent sequences of 1, 2, and 4 symbols
if(nseq.eq.1) nsym=1
if(nseq.eq.2) nsym=2
if(nseq.eq.3) nsym=4
nt=2**(2*nsym)
do ks=1,NN-nsym+1,nsym !87+16=103 symbols.
do ks=1,NN-nsym+1,nsym !87+16=103 symbols.
amax=-1.0
do i=0,nt-1
i1=i/64
@ -261,7 +289,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
ns3=count(hbits(133:140).eq.(/1,1,1,0,0,1,0,0/))
ns4=count(hbits(199:206).eq.(/1,0,1,1,0,0,0,1/))
nsync_qual=ns1+ns2+ns3+ns4
if(nsync_qual.lt. 20) cycle
if(nsync_qual.lt. 20) cycle
scalefac=2.83
llra( 1: 58)=bmeta( 9: 66)
@ -277,24 +305,89 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
llrc(117:174)=bmetc(141:198)
llrc=scalefac*llrc
do isd=1,3
if(isd.eq.1) llr=llra
if(isd.eq.2) llr=llrb
if(isd.eq.3) llr=llrc
!llr(1:59)=1.5*scalefac*(2*apbits(1:59)-1)
apmask=0
!apmask(1:91)=1
apmag=maxval(abs(llra))*1.1
npasses=3+nappasses(nQSOProgress)
do ipass=1,npasses
if(ipass.eq.1) llr=llra
if(ipass.eq.2) llr=llrb
if(ipass.eq.3) llr=llrc
if(ipass.le.3) then
apmask=0
iaptype=0
endif
if(ipass .gt. 3) then
llrd=llrc
iaptype=naptypes(nQSOProgress,ipass-3)
if(iaptype.eq.1) then ! CQ or CQ TEST
apmask=0
apmask(1:29)=1
if(ncontest.eq.0) llrd(1:29)=apmag*mcq(1:29)
if(ncontest.eq.1) llrd(1:29)=apmag*mcqtest(1:29)
if(ncontest.eq.2) llrd(1:29)=apmag*mcqtest(1:29)
if(ncontest.eq.3) llrd(1:29)=apmag*mcqfd(1:29)
if(ncontest.eq.4) llrd(1:29)=apmag*mcqru(1:29)
if(ncontest.eq.6) llrd(1:29)=apmag*mcq(1:29)
endif
if(iaptype.eq.2) then ! MyCall,???,???
apmask=0
if(ncontest.eq.0.or.ncontest.eq.1) then
apmask(1:29)=1
llrd(1:29)=apmag*apbits(1:29)
else if(ncontest.eq.2) then
apmask(1:28)=1
llrd(1:28)=apmag*apbits(1:28)
else if(ncontest.eq.3) then
apmask(1:28)=1
llrd(1:28)=apmag*apbits(1:28)
else if(ncontest.eq.4) then
apmask(2:29)=1
llrd(2:29)=apmag*apbits(1:28)
else if(ncontest.eq.6) then ! ??? RR73; MyCall <???> ???
apmask(29:56)=1
llrd(29:56)=apmag*apbits(1:28)
endif
endif
if(iaptype.eq.3) then ! MyCall,DxCall,???
apmask=0
if(ncontest.eq.0.or.ncontest.eq.1.or.ncontest.eq.2.or.ncontest.eq.6) then
apmask(1:58)=1
llrd(1:58)=apmag*apbits
else if(ncontest.eq.3) then ! Field Day
apmask(1:56)=1
llrd(1:28)=apmag*apbits(1:28)
llrd(29:56)=apmag*apbits(30:57)
else if(ncontest.eq.4) then ! RTTY RU
apmask(2:57)=1
llrd(2:29)=apmag*apbits(1:28)
llrd(30:57)=apmag*apbits(30:57)
endif
endif
if(iaptype.eq.5.and.ncontest.eq.6) cycle !Hound
if(iaptype.eq.4 .or. iaptype.eq.5 .or. iaptype.eq.6) then
apmask=0
if(ncontest.le.4 .or. (ncontest.eq.6.and.iaptype.eq.6)) then
apmask(1:77)=1 ! mycall, hiscall, RRR|73|RR73
llrd(1:58)=apmag*apbits
if(iaptype.eq.4) llrd(59:77)=apmag*mrrr
if(iaptype.eq.5) llrd(59:77)=apmag*m73
if(iaptype.eq.6) llrd(59:77)=apmag*mrr73
else if(ncontest.eq.6.and.iaptype.eq.4) then ! Hound listens for MyCall RR73;...
apmask(1:28)=1
llrd(1:28)=apmag*apbits(1:28)
endif
endif
llr=llrd
endif
max_iterations=40
do ibias=0,0
llr2=llr
if(ibias.eq.1) llr2=llr+0.4
if(ibias.eq.2) llr2=llr-0.4
call clockit('bpdecode',0)
call bpdecode174_91(llr2,apmask,max_iterations,message77, &
cw,nharderror,niterations)
call clockit('bpdecode',1)
if(nharderror.ge.0) exit
enddo
call clockit('bpdecode',0)
call bpdecode174_91(llr,apmask,max_iterations,message77, &
cw,nharderror,niterations)
call clockit('bpdecode',1)
if(sum(message77).eq.0) cycle
if( nharderror.ge.0 ) then
message77=mod(message77+rvec,2)
@ -310,22 +403,24 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
if(snr.gt.0.0) then
xsnr=10*log10(snr)-14.0
else
xsnr=-18.0
xsnr=-20.0
endif
nsnr=nint(xsnr)
nsnr=nint(max(-20.0,xsnr))
freq=f0
tsig=mod(tbuf + ibest/750.0,100.0)
write(line,1000) hhmmss,nsnr,tsig,nint(freq),message
1000 format(a6,i4,f5.1,i5,' + ',1x,a37)
fname=trim(data_dir)//'/all_ft4.txt'
l1=index(data_dir,char(0))-1
data_dir(l1+1:l1+1)="/"
fname=data_dir(1:l1+1)//'all_ft4.txt'
open(24,file=trim(fname),status='unknown',position='append')
write(24,1002) cdatetime0,nsnr,tsig,nint(freq),message, &
nharderror,nsync_qual,isd,niterations
nharderror,nsync_qual,ipass,niterations,iaptype
if(hhmmss.eq.' ') write(*,1002) cdatetime0,nsnr, &
tsig,nint(freq),message,nharderror,nsync_qual,isd, &
niterations
1002 format(a17,i4,f5.1,i5,' Rx ',a37,4i5)
tsig,nint(freq),message,nharderror,nsync_qual,ipass, &
niterations,iaptype
1002 format(a17,i4,f5.1,i5,' Rx ',a37,5i5)
close(24)
linex(ndecodes)=line
@ -341,7 +436,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
if((index(message,trim(mycall)//' ').eq.1) .and. &
(index(message,' '//trim(hiscall)//' ').ge.4)) then
if(index(message,' 559 ').gt.8) nrx=2 !### Not right !
if(index(message,' R 559 ').gt.8) nrx=3 !### Not right !
if(index(message,' R 559 ').gt.8) nrx=3 !### Not right !
if(index(message,' RR73 ').gt.8) nrx=4
endif
nrxx(ndecodes)=nrx
@ -352,65 +447,13 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,
enddo !Sequence estimation
enddo !Candidate list
call clockit('ft4_deco',1)
! clockit data directory does not get set properly on the Mac.
! call clockit2(data_dir)
! call clockit('ft4_deco',101)
call clockit2(data_dir)
call clockit('ft4_deco',101)
return
entry get_ft4msg(idecode,nrx,line)
entry get_ft4msg(idecode,nrx,line)
line=linex(idecode)
nrx=nrxx(idecode)
return
end subroutine ft4_decode
subroutine ft4_downsample(iwave,f0,c)
! Input: i*2 data in iwave() at sample rate 12000 Hz
! Output: Complex data in c(), sampled at 1200 Hz
include 'ft4_params.f90'
parameter (NFFT2=NMAX/16)
integer*2 iwave(NMAX)
complex c(0:NMAX/NDOWN-1)
complex c1(0:NFFT2-1)
complex cx(0:NMAX/2)
real x(NMAX), window(0:NFFT2-1)
equivalence (x,cx)
logical first
data first/.true./
save first,window
df=12000.0/NMAX
baud=12000.0/NSPS
if(first) then
bw_transition = 0.5*baud
bw_flat = 4*baud
iwt = bw_transition / df
iwf = bw_flat / df
pi=4.0*atan(1.0)
window(0:iwt-1) = 0.5*(1+cos(pi*(/(i,i=iwt-1,0,-1)/)/iwt))
window(iwt:iwt+iwf-1)=1.0
window(iwt+iwf:2*iwt+iwf-1) = 0.5*(1+cos(pi*(/(i,i=0,iwt)/)/iwt))
window(2*iwt+iwf:)=0.0
iws = baud / df
window=cshift(window,iws)
first=.false.
endif
x=iwave
call four2a(x,NMAX,1,-1,0) !r2c FFT to freq domain
i0=nint(f0/df)
c1=0.
c1(0)=cx(i0)
do i=1,NFFT2/2
if(i0+i.le.NMAX/2) c1(i)=cx(i0+i)
if(i0-i.ge.0) c1(NFFT2-i)=cx(i0-i)
enddo
c1=c1*window/NFFT2
call four2a(c1,NFFT2,1,1,1) !c2c FFT back to time domain
c=c1(0:NMAX/NDOWN-1)
return
end subroutine ft4_downsample

459
lib/ft4/ft4_decode.indent Normal file
View File

@ -0,0 +1,459 @@
subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso,iwave, &
ndecodes,mycall,hiscall,nrx,line,data_dir)
use packjt77
include 'ft4_params.f90'
parameter (NSS=NSPS/NDOWN)
character message*37,msgsent*37
character c77*77
character*61 line,linex(100)
character*37 decodes(100)
character*512 data_dir,fname
character*17 cdatetime0
character*12 mycall,hiscall
character*12 mycall0,hiscall0
character*6 hhmmss
complex cd2(0:NMAX/NDOWN-1) !Complex waveform
complex cds(0:NMAX/NDOWN-1) !Complex waveform
complex cb(0:NMAX/NDOWN-1)
complex cd(0:NN*NSS-1) !Complex waveform
complex ctwk(4*NSS),ctwk2(4*NSS)
complex csymb(NSS)
complex cs(0:3,NN)
real s4(0:3,NN)
real bmeta(2*NN),bmetb(2*NN),bmetc(2*NN)
real a(5)
real llr(2*ND),llra(2*ND),llrb(2*ND),llrc(2*ND),llrd(2*ND)
real s2(0:255)
real candidate(3,100)
real savg(NH1),sbase(NH1)
integer apbits(58)
integer nrxx(100)
integer icos4a(0:3),icos4b(0:3),icos4c(0:3),icos4d(0:3)
integer*2 iwave(NMAX) !Generated full-length waveform
integer*1 message77(77),rvec(77),apmask(2*ND),cw(2*ND)
integer*1 hbits(2*NN)
integer graymap(0:3)
integer ip(1)
integer nappasses(0:5) ! # of decoding passes for QSO States 0-5
integer naptypes(0:5,4) ! nQSOProgress, decoding pass
integer mcq(29),mcqru(29),mcqfd(29),mcqtest(29)
integer mrrr(19),m73(19),mrr73(19)
logical unpk77_success
logical one(0:255,0:7) ! 256 4-symbol sequences, 8 bits
logical first
data icos4a/0,1,3,2/
data icos4b/1,0,2,3/
data icos4c/2,3,1,0/
data icos4d/3,2,0,1/
data graymap/0,1,3,2/
data first/.true./
data mcq/0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0/
data mcqru/0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,0,0,1,1,0,0/
data mcqfd/0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,0,0,1,0,0,0,1,0/
data mcqtest/0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,1,0,1,0,1,1,1,1,1,1,0,0,1,0/
data mrrr/0,1,1,1,1,1,1,0,1,0,0,1,0,0,1,0,0,0,1/
data m73/0,1,1,1,1,1,1,0,1,0,0,1,0,1,0,0,0,0,1/
data mrr73/0,1,1,1,1,1,1,0,0,1,1,1,0,1,0,1,0,0,1/
data rvec/0,1,0,0,1,0,1,0,0,1,0,1,1,1,1,0,1,0,0,0,1,0,0,1,1,0,1,1,0, &
1,0,0,1,0,1,1,0,0,0,0,1,0,0,0,1,0,1,0,0,1,1,1,1,0,0,1,0,1, &
0,1,0,1,0,1,1,0,1,1,1,1,1,0,0,0,1,0,1/
save fs,dt,tt,txt,twopi,h,one,first,nrxx,linex,apbits,nappasses,naptypes, &
mycall0,hiscall0,ncontest0
call clockit('ft4_deco',0)
hhmmss=cdatetime0(8:13)
if(first) then
fs=12000.0/NDOWN !Sample rate after downsampling
dt=1/fs !Sample interval after downsample (s)
tt=NSPS*dt !Duration of "itone" symbols (s)
txt=NZ*dt !Transmission length (s) without ramp up/down
twopi=8.0*atan(1.0)
h=1.0
one=.false.
do i=0,255
do j=0,7
if(iand(i,2**j).ne.0) one(i,j)=.true.
enddo
enddo
mcq=2*mod(mcq+rvec(1:29),2)-1
mcqfd=2*mod(mcqfd+rvec(1:29),2)-1
mcqru=2*mod(mcqru+rvec(1:29),2)-1
mcqtest=2*mod(mcqtest+rvec(1:29),2)-1
mrrr=2*mod(mrrr+rvec(59:77),2)-1
m73=2*mod(m73+rvec(59:77),2)-1
mrr73=2*mod(mrr73+rvec(59:77),2)-1
nappasses(0)=2
nappasses(1)=2
nappasses(2)=2
nappasses(3)=2
nappasses(4)=2
nappasses(5)=3
! iaptype
!------------------------
! 1 CQ ??? ??? (29+3=32 ap bits)
! 2 MyCall ??? ??? (29+3=32 ap bits)
! 3 MyCall DxCall ??? (58+3=61 ap bits)
! 4 MyCall DxCall RRR (77 ap bits)
! 5 MyCall DxCall 73 (77 ap bits)
! 6 MyCall DxCall RR73 (77 ap bits)
naptypes(0,1:4)=(/1,2,0,0/) ! Tx6 selected (CQ)
naptypes(1,1:4)=(/2,3,0,0/) ! Tx1
naptypes(2,1:4)=(/2,3,0,0/) ! Tx2
naptypes(3,1:4)=(/3,6,0,0/) ! Tx3
naptypes(4,1:4)=(/3,6,0,0/) ! Tx4
naptypes(5,1:4)=(/3,1,2,0/) ! Tx5
first=.false.
endif
if(mycall.ne.mycall0 .or. hiscall.ne.hiscall0) then
call ft8apset(mycall,hiscall,apbits)
if(apbits( 1).ne.99) then
apbits( 1:29)=(apbits(1:29)+1)/2
apbits( 1:29)=2*mod(apbits( 1:29)+rvec( 1:29),2)-1
endif
if(apbits(30).ne.99) then
apbits(30:58)=(apbits(30:58)+1)/2
apbits(30:58)=2*mod(apbits(30:58)+rvec(30:58),2)-1
endif
mycall0=mycall
hiscall0=hiscall
endif
candidate=0.0
ncand=0
syncmin=1.2
maxcand=100
fa=nfa
fb=nfb
call clockit('getcand4',0)
call getcandidates4(iwave,fa,fb,syncmin,nfqso,maxcand,savg,candidate, &
ncand,sbase)
call clockit('getcand4',1)
ndecodes=0
do icand=1,ncand
f0=candidate(1,icand)
snr=candidate(3,icand)-1.0
if( f0.le.375.0 .or. f0.ge.(5000.0-375.0) ) cycle
call clockit('ft4_down',0)
call ft4_downsample(iwave,f0,cd2) !Downsample from 512 to 32 Sa/Symbol
call clockit('ft4_down',1)
sum2=sum(cd2*conjg(cd2))/(real(NMAX)/real(NDOWN))
if(sum2.gt.0.0) cd2=cd2/sqrt(sum2)
! Sample rate is now 12000/16 = 750 samples/second
do isync=1,2
if(isync.eq.1) then
idfmin=-12
idfmax=12
idfstp=3
ibmin=0
ibmax=374
ibstp=4
else
idfmin=idfbest-4
idfmax=idfbest+4
idfstp=1
ibmin=max(0,ibest-5)
ibmax=min(ibest+5,NMAX/NDOWN-1)
ibstp=1
endif
ibest=-1
smax=-99.
idfbest=0
do idf=idfmin,idfmax,idfstp
a=0.
a(1)=real(idf)
ctwk=1.
call clockit('twkfreq1',0)
call twkfreq1(ctwk,4*NSS,fs,a,ctwk2)
call clockit('twkfreq1',1)
call clockit('sync4d ',0)
do istart=ibmin,ibmax,ibstp
call sync4d(cd2,istart,ctwk2,1,sync,sync2) !Find sync power
if(sync.gt.smax) then
smax=sync
ibest=istart
idfbest=idf
endif
enddo
call clockit('sync4d ',1)
enddo
enddo
f0=f0+real(idfbest)
!f0=1500
!ibest=219
call clockit('ft4down ',0)
call ft4_downsample(iwave,f0,cb) !Final downsample with corrected f0
call clockit('ft4down ',1)
sum2=sum(abs(cb)**2)/(real(NSS)*NN)
if(sum2.gt.0.0) cb=cb/sqrt(sum2)
cd=cb(ibest:ibest+NN*NSS-1)
call clockit('four2a ',0)
do k=1,NN
i1=(k-1)*NSS
csymb=cd(i1:i1+NSS-1)
call four2a(csymb,NSS,1,-1,1)
cs(0:3,k)=csymb(1:4)
s4(0:3,k)=abs(csymb(1:4))
enddo
call clockit('four2a ',1)
! Sync quality check
is1=0
is2=0
is3=0
is4=0
do k=1,4
ip=maxloc(s4(:,k))
if(icos4a(k-1).eq.(ip(1)-1)) is1=is1+1
ip=maxloc(s4(:,k+33))
if(icos4b(k-1).eq.(ip(1)-1)) is2=is2+1
ip=maxloc(s4(:,k+66))
if(icos4c(k-1).eq.(ip(1)-1)) is3=is3+1
ip=maxloc(s4(:,k+99))
if(icos4d(k-1).eq.(ip(1)-1)) is4=is4+1
enddo
nsync=is1+is2+is3+is4 !Number of hard sync errors, 0-16
if(smax .lt. 0.7 .or. nsync .lt. 8) cycle
do nseq=1,3 !Try coherent sequences of 1, 2, and 4 symbols
if(nseq.eq.1) nsym=1
if(nseq.eq.2) nsym=2
if(nseq.eq.3) nsym=4
nt=2**(2*nsym)
do ks=1,NN-nsym+1,nsym !87+16=103 symbols.
amax=-1.0
do i=0,nt-1
i1=i/64
i2=iand(i,63)/16
i3=iand(i,15)/4
i4=iand(i,3)
if(nsym.eq.1) then
s2(i)=abs(cs(graymap(i4),ks))
elseif(nsym.eq.2) then
s2(i)=abs(cs(graymap(i3),ks)+cs(graymap(i4),ks+1))
elseif(nsym.eq.4) then
s2(i)=abs(cs(graymap(i1),ks ) + &
cs(graymap(i2),ks+1) + &
cs(graymap(i3),ks+2) + &
cs(graymap(i4),ks+3) &
)
else
print*,"Error - nsym must be 1, 2, or 4."
endif
enddo
ipt=1+(ks-1)*2
if(nsym.eq.1) ibmax=1
if(nsym.eq.2) ibmax=3
if(nsym.eq.4) ibmax=7
do ib=0,ibmax
bm=maxval(s2(0:nt-1),one(0:nt-1,ibmax-ib)) - &
maxval(s2(0:nt-1),.not.one(0:nt-1,ibmax-ib))
if(ipt+ib.gt.2*NN) cycle
if(nsym.eq.1) then
bmeta(ipt+ib)=bm
elseif(nsym.eq.2) then
bmetb(ipt+ib)=bm
elseif(nsym.eq.4) then
bmetc(ipt+ib)=bm
endif
enddo
enddo
enddo
call clockit('normaliz',0)
call normalizebmet(bmeta,2*NN)
call normalizebmet(bmetb,2*NN)
call normalizebmet(bmetc,2*NN)
call clockit('normaliz',1)
hbits=0
where(bmeta.ge.0) hbits=1
ns1=count(hbits( 1: 8).eq.(/0,0,0,1,1,0,1,1/))
ns2=count(hbits( 67: 74).eq.(/0,1,0,0,1,1,1,0/))
ns3=count(hbits(133:140).eq.(/1,1,1,0,0,1,0,0/))
ns4=count(hbits(199:206).eq.(/1,0,1,1,0,0,0,1/))
nsync_qual=ns1+ns2+ns3+ns4
if(nsync_qual.lt. 20) cycle
scalefac=2.83
llra( 1: 58)=bmeta( 9: 66)
llra( 59:116)=bmeta( 75:132)
llra(117:174)=bmeta(141:198)
llra=scalefac*llra
llrb( 1: 58)=bmetb( 9: 66)
llrb( 59:116)=bmetb( 75:132)
llrb(117:174)=bmetb(141:198)
llrb=scalefac*llrb
llrc( 1: 58)=bmetc( 9: 66)
llrc( 59:116)=bmetc( 75:132)
llrc(117:174)=bmetc(141:198)
llrc=scalefac*llrc
apmag=maxval(abs(llra))*1.1
npasses=3+nappasses(nQSOProgress)
do ipass=1,npasses
if(ipass.eq.1) llr=llra
if(ipass.eq.2) llr=llrb
if(ipass.eq.3) llr=llrc
if(ipass.le.3) then
apmask=0
iaptype=0
endif
if(ipass .gt. 3) then
llrd=llrc
iaptype=naptypes(nQSOProgress,ipass-3)
if(iaptype.eq.1) then ! CQ or CQ TEST
apmask=0
apmask(1:29)=1
if(ncontest.eq.0) llrd(1:29)=apmag*mcq(1:29)
if(ncontest.eq.1) llrd(1:29)=apmag*mcqtest(1:29)
if(ncontest.eq.2) llrd(1:29)=apmag*mcqtest(1:29)
if(ncontest.eq.3) llrd(1:29)=apmag*mcqfd(1:29)
if(ncontest.eq.4) llrd(1:29)=apmag*mcqru(1:29)
if(ncontest.eq.6) llrd(1:29)=apmag*mcq(1:29)
endif
if(iaptype.eq.2) then ! MyCall,???,???
apmask=0
if(ncontest.eq.0.or.ncontest.eq.1) then
apmask(1:29)=1
llrd(1:29)=apmag*apbits(1:29)
else if(ncontest.eq.2) then
apmask(1:28)=1
llrd(1:28)=apmag*apbits(1:28)
else if(ncontest.eq.3) then
apmask(1:28)=1
llrd(1:28)=apmag*apbits(1:28)
else if(ncontest.eq.4) then
apmask(2:29)=1
llrd(2:29)=apmag*apbits(1:28)
else if(ncontest.eq.6) then ! ??? RR73; MyCall <???> ???
apmask(29:56)=1
llrd(29:56)=apmag*apbits(1:28)
endif
endif
if(iaptype.eq.3) then ! MyCall,DxCall,???
apmask=0
if(ncontest.eq.0.or.ncontest.eq.1.or.ncontest.eq.2.or.ncontest.eq.6) then
apmask(1:58)=1
llrd(1:58)=apmag*apbits
else if(ncontest.eq.3) then ! Field Day
apmask(1:56)=1
llrd(1:28)=apmag*apbits(1:28)
llrd(29:56)=apmag*apbits(30:57)
else if(ncontest.eq.4) then ! RTTY RU
apmask(2:57)=1
llrd(2:29)=apmag*apbits(1:28)
llrd(30:57)=apmag*apbits(30:57)
endif
endif
if(iaptype.eq.5.and.ncontest.eq.6) cycle !Hound
if(iaptype.eq.4 .or. iaptype.eq.5 .or. iaptype.eq.6) then
apmask=0
if(ncontest.le.4 .or. (ncontest.eq.6.and.iaptype.eq.6)) then
apmask(1:77)=1 ! mycall, hiscall, RRR|73|RR73
llrd(1:58)=apmag*apbits
if(iaptype.eq.4) llrd(59:77)=apmag*mrrr
if(iaptype.eq.5) llrd(59:77)=apmag*m73
if(iaptype.eq.6) llrd(59:77)=apmag*mrr73
else if(ncontest.eq.6.and.iaptype.eq.4) then ! Hound listens for MyCall RR73;...
apmask(1:28)=1
llrd(1:28)=apmag*apbits(1:28)
endif
endif
llr=llrd
endif
max_iterations=40
call clockit('bpdecode',0)
call bpdecode174_91(llr,apmask,max_iterations,message77, &
cw,nharderror,niterations)
call clockit('bpdecode',1)
if(sum(message77).eq.0) cycle
if( nharderror.ge.0 ) then
message77=mod(message77+rvec,2)
write(c77,'(77i1)') message77(1:77)
call unpack77(c77,1,message,unpk77_success)
idupe=0
do i=1,ndecodes
if(decodes(i).eq.message) idupe=1
enddo
if(idupe.eq.1) exit
ndecodes=ndecodes+1
decodes(ndecodes)=message
if(snr.gt.0.0) then
xsnr=10*log10(snr)-14.0
else
xsnr=-20.0
endif
nsnr=nint(max(-20.0,xsnr))
freq=f0
tsig=mod(tbuf + ibest/750.0,100.0)
write(line,1000) hhmmss,nsnr,tsig,nint(freq),message
1000 format(a6,i4,f5.1,i5,' + ',1x,a37)
l1=index(data_dir,char(0))-1
data_dir(l1+1:l1+1)="/"
fname=data_dir(1:l1+1)//'all_ft4.txt'
open(24,file=trim(fname),status='unknown',position='append')
write(24,1002) cdatetime0,nsnr,tsig,nint(freq),message, &
nharderror,nsync_qual,ipass,niterations,iaptype
if(hhmmss.eq.' ') write(*,1002) cdatetime0,nsnr, &
tsig,nint(freq),message,nharderror,nsync_qual,ipass, &
niterations,iaptype
1002 format(a17,i4,f5.1,i5,' Rx ',a37,5i5)
close(24)
linex(ndecodes)=line
!### Temporary: assume most recent decoded message conveys "hiscall". ###
i0=index(message,' ')
if(i0.ge.3 .and. i0.le.7) then
hiscall=message(i0+1:i0+6)
i1=index(hiscall,' ')
if(i1.gt.0) hiscall=hiscall(1:i1)
endif
nrx=-1
if(index(message,'CQ ').eq.1) nrx=1
if((index(message,trim(mycall)//' ').eq.1) .and. &
(index(message,' '//trim(hiscall)//' ').ge.4)) then
if(index(message,' 559 ').gt.8) nrx=2 !### Not right !
if(index(message,' R 559 ').gt.8) nrx=3 !### Not right !
if(index(message,' RR73 ').gt.8) nrx=4
endif
nrxx(ndecodes)=nrx
!###
exit
endif
enddo !Sequence estimation
enddo !Candidate list
call clockit('ft4_deco',1)
call clockit2(data_dir)
call clockit('ft4_deco',101)
return
entry get_ft4msg(idecode,nrx,line)
line=linex(idecode)
nrx=nrxx(idecode)
return
end subroutine ft4_decode

49
lib/ft4/ft4_downsample.f90 Normal file
View File

@ -0,0 +1,49 @@
subroutine ft4_downsample(iwave,f0,c)
! Input: i*2 data in iwave() at sample rate 12000 Hz
! Output: Complex data in c(), sampled at 1200 Hz
include 'ft4_params.f90'
parameter (NFFT2=NMAX/16)
integer*2 iwave(NMAX)
complex c(0:NMAX/NDOWN-1)
complex c1(0:NFFT2-1)
complex cx(0:NMAX/2)
real x(NMAX), window(0:NFFT2-1)
equivalence (x,cx)
logical first
data first/.true./
save first,window
df=12000.0/NMAX
baud=12000.0/NSPS
if(first) then
bw_transition = 0.5*baud
bw_flat = 4*baud
iwt = bw_transition / df
iwf = bw_flat / df
pi=4.0*atan(1.0)
window(0:iwt-1) = 0.5*(1+cos(pi*(/(i,i=iwt-1,0,-1)/)/iwt))
window(iwt:iwt+iwf-1)=1.0
window(iwt+iwf:2*iwt+iwf-1) = 0.5*(1+cos(pi*(/(i,i=0,iwt)/)/iwt))
window(2*iwt+iwf:)=0.0
iws = baud / df
window=cshift(window,iws)
first=.false.
endif
x=iwave
call four2a(x,NMAX,1,-1,0) !r2c FFT to freq domain
i0=nint(f0/df)
c1=0.
c1(0)=cx(i0)
do i=1,NFFT2/2
if(i0+i.le.NMAX/2) c1(i)=cx(i0+i)
if(i0-i.ge.0) c1(NFFT2-i)=cx(i0-i)
enddo
c1=c1*window/NFFT2
call four2a(c1,NFFT2,1,1,1) !c2c FFT back to time domain
c=c1(0:NMAX/NDOWN-1)
return
end subroutine ft4_downsample

21
lib/ft4/ft4d.f90
View File

@ -8,10 +8,10 @@ program ft4d
character*11 datetime
character*37 decodes(100)
character*16 fname
character*6 hiscall
character*12 mycall
character*12 hiscall
character*80 infile
character*61 line
character*6 mycall
real*8 fMHz
@ -26,7 +26,7 @@ program ft4d
nargs=iargc()
if(nargs.lt.1) then
print*,'Usage: ft4d [-a <data_dir>] [-f fMHz] file1 [file2 ...]'
print*,'Usage: ft4d [-a <data_dir>] [-f fMHz] [-n nQSOProgress] file1 [file2 ...]'
go to 999
endif
iarg=1
@ -42,9 +42,18 @@ program ft4d
read(arg,*) fMHz
iarg=iarg+2
endif
nQSOProgress=0
if(arg(1:2).eq.'-n') then
call getarg(iarg+1,arg)
read(arg,*) nQSOProgress
iarg=iarg+2
endif
nfa=200
nfb=3000
nQSOProgress=0
ncontest=0
nfqso=1500
mycall="K9AN"
hiscall="K1JT"
do ifile=iarg,nargs
call getarg(ifile,infile)
@ -56,8 +65,8 @@ program ft4d
cdatetime=' '//datetime
close(10)
call ft4_decode(cdatetime,0.0,nfa,nfb,nQSOProgress,nfqso,iwave,ndecodes,mycall, &
hiscall,nrx,line,data_dir)
call ft4_decode(cdatetime,0.0,nfa,nfb,nQSOProgress,ncontest,nfqso,iwave, &
ndecodes,mycall,hiscall,nrx,line,data_dir)
do idecode=1,ndecodes
call get_ft4msg(idecode,nrx,line)

20
widgets/mainwindow.cpp
View File

@ -164,8 +164,8 @@ extern "C" {
void chkcall_(char* w, char* basc_call, bool cok, int len1, int len2);
void ft4_decode_(char* cdatetime, float* tbuf, int* nfa, int* nfb, int* nQSOProgress,
int* nfqso, short int id[], int* ndecodes, char* mycall6,
char* hiscall6, int* nrx, char* line, char* ddir, int len1, int len2,
int* nContest, int* nfqso, short int id[], int* ndecodes, char* mycall,
char* hiscall, int* nrx, char* line, char* ddir, int len1, int len2,
int len3, int len4, int len5);
void get_ft4msg_(int* idecode, int* nrx, char* line, int len);
@ -8651,21 +8651,27 @@ void MainWindow::ft4Data(int k)
ba=time.toString("yyMMdd_hhmmss.sss").toLatin1();
}
char* cdatetime=ba.data();
char mycall6[] ="K1JT ";
char hiscall6[]="K9AN ";
strncpy(dec_data.params.mycall, (m_config.my_callsign()+" ").toLatin1(),12);
char mycall[13];
strncpy(mycall,m_config.my_callsign().toLatin1(),12);
char hiscall[13];
strncpy(hiscall,m_hisCall.toLatin1(),12);
char line[61];
int nfqso=1500;
int ndecodes=0;
int nrx=-1;
int nfa=m_wideGraph->nStartFreq();
int nfb=m_wideGraph->Fmax();
int nQSOProgress=m_QSOProgress;
int nQSOProgress = static_cast<int> ( m_QSOProgress );
int nContest = static_cast<int> (m_config.special_op_id());
QString dataDir;
dataDir = m_config.writeable_data_dir ().absolutePath ();
char ddir[512];
strncpy(ddir,dataDir.toLatin1(), sizeof (ddir) - 1);
ft4_decode_(cdatetime,&tbuf,&nfa,&nfb,&nQSOProgress,&nfqso,id,&ndecodes,mycall6,hiscall6,
&nrx,&line[0],&ddir[0],17,6,6,61,512);
ft4_decode_(cdatetime,&tbuf,&nfa,&nfb,&nQSOProgress,&nContest,&nfqso,id,&ndecodes,&mycall[0],&hiscall[0],
&nrx,&line[0],&ddir[0],17,12,12,61,512);
line[60]=0;
// if(ndecodes>0) {
for (int idecode=1; idecode<=ndecodes; idecode++) {