mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-22 04:11:16 -05:00
Many changes in aid of decoding signals with significant Doppler spread
in submodes JT65B, C. More changes still to come! git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6535 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
This commit is contained in:
Joe Taylor
parent
8d21cdf1c7
commit
9f388b63dc
@ -83,11 +83,14 @@ subroutine decode65a(dd,npts,newdat,nqd,f0,nflip,mode65,ntrials, &
|
||||
|
||||
call timer('dec65b ',0)
|
||||
qualbest=0.
|
||||
minsmo=0
|
||||
maxsmo=0
|
||||
if(mode65.eq.2) maxsmo=5
|
||||
if(mode65.eq.4) maxsmo=10
|
||||
if(mode65.ge.2) then
|
||||
minsmo=nint(width/df)
|
||||
maxsmo=2*minsmo
|
||||
endif
|
||||
nn=0
|
||||
do ismo=0,maxsmo
|
||||
do ismo=minsmo,maxsmo
|
||||
if(ismo.gt.0) then
|
||||
do j=1,126
|
||||
call smo121(s1(-255,j),512)
|
||||
@ -127,6 +130,8 @@ subroutine decode65a(dd,npts,newdat,nqd,f0,nflip,mode65,ntrials, &
|
||||
endif
|
||||
enddo
|
||||
|
||||
! print*,width,minsmo,maxsmo,nsmo,nn
|
||||
|
||||
if(nft.eq.2) then
|
||||
decoded=decoded_best
|
||||
qual=qualbest
|
||||
|
||||
@ -198,7 +198,7 @@ contains
|
||||
1000 format(a1,i5.4,f6.1,f6.2,i6,1x,a1)
|
||||
end subroutine jt4_average
|
||||
|
||||
subroutine jt65_decoded(this,utc,sync,snr,dt,freq,drift,decoded,ft, &
|
||||
subroutine jt65_decoded(this,utc,sync,snr,dt,freq,drift,width,decoded,ft, &
|
||||
qual,nsmo,nsum,minsync,nsubmode,naggressive)
|
||||
|
||||
use jt65_decode
|
||||
@ -211,6 +211,7 @@ contains
|
||||
real, intent(in) :: dt
|
||||
integer, intent(in) :: freq
|
||||
integer, intent(in) :: drift
|
||||
real, intent(in) :: width
|
||||
character(len=22), intent(in) :: decoded
|
||||
integer, intent(in) :: ft
|
||||
integer, intent(in) :: qual
|
||||
@ -243,8 +244,8 @@ contains
|
||||
1010 format(i4.4,i4,f5.1,i5,1x,a1,1x,a22,a3)
|
||||
endif
|
||||
|
||||
write(13,1012) utc,nint(sync),snr,dt,float(freq),drift,decoded,ft,nsmo
|
||||
1012 format(i4.4,i4,i5,f6.1,f8.0,i4,3x,a22,' JT65',i4,i2)
|
||||
write(13,1012) utc,nint(sync),snr,dt,float(freq),drift,decoded,ft,nsum,nsmo
|
||||
1012 format(i4.4,i4,i5,f6.2,f8.0,i4,3x,a22,' JT65',3i3)
|
||||
call flush(6)
|
||||
|
||||
!$omp end critical(decode_results)
|
||||
|
||||
@ -18,7 +18,7 @@ program fer65
|
||||
! -s S/N in 2500 Hz -s single-decode mode
|
||||
|
||||
implicit real*8 (a-h,o-z)
|
||||
real*8 s(5),sq(5)
|
||||
real*8 s(6),sq(6)
|
||||
character arg*12,cmnd*100,decoded*22,submode*1,csync*1
|
||||
logical syncok
|
||||
|
||||
@ -51,11 +51,11 @@ program fer65
|
||||
open(21,file='fer65.21',status='unknown')
|
||||
|
||||
write(20,1000) submode,iters,ntrials,naggressive,d
|
||||
1000 format('JT65',a1,' Iters:',i6,' T:',i7,' Aggressive:',i3, &
|
||||
1000 format(/'JT65',a1,' Iters:',i6,' T:',i7,' Aggressive:',i3, &
|
||||
' Doppler:',f6.1)
|
||||
write(20,1002)
|
||||
1002 format(/' dB nsync ngood nbad sync dsnr ', &
|
||||
'DT Freq Drift'/77('-'))
|
||||
'DT Freq Drift Width'/85('-'))
|
||||
|
||||
do isnr=0,20
|
||||
snr=snr1+isnr
|
||||
@ -77,37 +77,41 @@ program fer65
|
||||
isync=0
|
||||
nsnr=0
|
||||
dt=0.
|
||||
freq=0.
|
||||
nfreq=0
|
||||
ndrift=0
|
||||
nwidth=0
|
||||
cmnd='./jt65 -m A -a 10 -f 1500 -n 1000 -d 3 -s -X 32 000000_0001.wav > decoded.txt'
|
||||
cmnd(11:11)=submode
|
||||
! print*,cmnd
|
||||
call system(cmnd)
|
||||
open(13,file='fort.13',status='old',err=20)
|
||||
read(13,1012) nutc,isync,nsnr,dt,freq,ndrift,decoded,nft,nsum,nsmo
|
||||
1012 format(i4,i4,i5,f6.2,f8.0,i4,3x,a22,5x,3i3)
|
||||
read(13,1012) nutc,isync,nsnr,dt,nfreq,ndrift,nwidth,decoded, &
|
||||
nft,nsum,nsmo
|
||||
1012 format(i4,i4,i5,f6.2,i5,i4,i3,1x,a22,5x,3i3)
|
||||
close(13)
|
||||
syncok=abs(dt).lt.0.2 .and. abs(freq-1500.0).lt.dfmax
|
||||
syncok=abs(dt).lt.0.2 .and. float(abs(nfreq-1500)).lt.dfmax
|
||||
csync=' '
|
||||
if(syncok) csync='*'
|
||||
write(21,1014) nutc,isync,nsnr,dt,freq,ndrift,nft,nsum,nsmo,csync, &
|
||||
decoded(1:16)
|
||||
1014 format(i4,i4,i5,f6.2,f8.0,i4,3x,3i3,1x,a1,1x,a16)
|
||||
write(21,1014) nutc,isync,nsnr,dt,nfreq,ndrift,nwidth, &
|
||||
nft,nsum,nsmo,csync,decoded(1:16)
|
||||
1014 format(i4,i4,i5,f6.2,i5,i4,3x,4i3,1x,a1,1x,a16)
|
||||
|
||||
if(syncok) then
|
||||
nsync=nsync+1
|
||||
s(1)=s(1) + isync
|
||||
sq(1)=sq(1) + isync*isync
|
||||
s(6)=s(6) + nwidth
|
||||
sq(6)=sq(6) + nwidth*nwidth
|
||||
if(decoded.eq.'K1ABC W9XYZ EN37 ') then
|
||||
ngood=ngood+1
|
||||
s(1)=s(1) + isync
|
||||
s(2)=s(2) + nsnr
|
||||
s(3)=s(3) + dt
|
||||
s(4)=s(4) + freq
|
||||
s(4)=s(4) + nfreq
|
||||
s(5)=s(5) + ndrift
|
||||
|
||||
sq(1)=sq(1) + isync*isync
|
||||
sq(2)=sq(2) + nsnr*nsnr
|
||||
sq(3)=sq(3) + dt*dt
|
||||
sq(4)=sq(4) + freq*freq
|
||||
sq(4)=sq(4) + nfreq*nfreq
|
||||
sq(5)=sq(5) + ndrift*ndrift
|
||||
else if(decoded.ne.' ') then
|
||||
nbad=nbad+1
|
||||
@ -118,20 +122,27 @@ program fer65
|
||||
fsync=float(nsync)/iter
|
||||
fgood=float(ngood)/iter
|
||||
fbad=float(nbad)/iter
|
||||
write(*,1020) iter,isync,nsnr,dt,int(freq),ndrift,fsync,fgood,fbad, &
|
||||
decoded(1:16)
|
||||
1020 format(i8,2i4,f7.2,i6,i4,2f7.3,f10.6,1x,a16)
|
||||
write(*,1020) iter,isync,nsnr,dt,nfreq,ndrift,nwidth,fsync,fgood, &
|
||||
fbad,decoded(1:18)
|
||||
1020 format(i8,2i4,f7.2,i6,i4,i3,2f7.3,f8.4,1x,a18)
|
||||
enddo
|
||||
|
||||
if(nsync.ge.1) then
|
||||
xsync=s(1)/nsync
|
||||
xwidth=s(6)/nsync
|
||||
endif
|
||||
if(nsync.ge.2) then
|
||||
esync=sqrt(sq(1)/nsync - xsync**2)
|
||||
ewidth=sqrt(sq(6)/nsync - xwidth**2)
|
||||
endif
|
||||
|
||||
if(ngood.ge.1) then
|
||||
xsync=s(1)/ngood
|
||||
xsnr=s(2)/ngood
|
||||
xdt=s(3)/ngood
|
||||
xfreq=s(4)/ngood
|
||||
xdrift=s(5)/ngood
|
||||
endif
|
||||
if(ngood.ge.2) then
|
||||
esync=sqrt(sq(1)/ngood - xsync**2)
|
||||
esnr=sqrt(sq(2)/ngood - xsnr**2)
|
||||
edt=sqrt(sq(3)/ngood - xdt**2)
|
||||
efreq=sqrt(sq(4)/ngood - xfreq**2)
|
||||
@ -139,10 +150,11 @@ program fer65
|
||||
endif
|
||||
|
||||
dsnr=xsnr-snr
|
||||
dfreq=xfreq-1500.0
|
||||
if(ngood.eq.0) dsnr=0.
|
||||
write(20,1100) snr,nsync,ngood,nbad,xsync,esync,dsnr,esnr, &
|
||||
xdt,edt,xfreq,efreq,xdrift,edrift
|
||||
1100 format(f5.1,2i6i4,2f6.1,f6.1,f5.1,f6.2,f5.2,f7.1,3f5.1)
|
||||
xdt,edt,dfreq,efreq,xdrift,edrift,xwidth,ewidth
|
||||
1100 format(f5.1,2i6i4,2f6.1,f6.1,f5.1,f6.2,f5.2,6f5.1)
|
||||
flush(20)
|
||||
|
||||
enddo
|
||||
|
||||
@ -79,7 +79,7 @@ program jt65
|
||||
case ('X')
|
||||
read (optarg(:narglen), *) nexp_decoded
|
||||
case ('s')
|
||||
ntol=10
|
||||
ntol=100
|
||||
nlow=nfqso-ntol
|
||||
nhigh=nfqso+ntol
|
||||
n2pass=1
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
module jt65_decode
|
||||
|
||||
integer, parameter :: NSZ=3413, NZMAX=60*12000, NFFT=1000
|
||||
integer, parameter :: NSZ=3413, NZMAX=60*12000
|
||||
|
||||
type :: jt65_decoder
|
||||
procedure(jt65_decode_callback), pointer :: callback => null()
|
||||
@ -13,7 +13,7 @@ module jt65_decode
|
||||
!
|
||||
abstract interface
|
||||
subroutine jt65_decode_callback(this,utc,sync,snr,dt,freq,drift, &
|
||||
decoded,ft,qual,nsmo,nsum,minsync,nsubmode,naggressive)
|
||||
width,decoded,ft,qual,nsmo,nsum,minsync,nsubmode,naggressive)
|
||||
|
||||
import jt65_decoder
|
||||
implicit none
|
||||
@ -24,6 +24,7 @@ module jt65_decode
|
||||
real, intent(in) :: dt
|
||||
integer, intent(in) :: freq
|
||||
integer, intent(in) :: drift
|
||||
real, intent(in) :: width
|
||||
character(len=22), intent(in) :: decoded
|
||||
integer, intent(in) :: ft
|
||||
integer, intent(in) :: qual
|
||||
@ -142,7 +143,38 @@ contains
|
||||
|
||||
! If a candidate was found within +/- ntol of nfqso, move it into ca(1).
|
||||
call fqso_first(nfqso,ntol,ca,ncand)
|
||||
if(single_decode) ncand=1
|
||||
df=12000.0/8192.0 !df = 1.465 Hz
|
||||
width=0.
|
||||
if(single_decode) then
|
||||
ncand=1
|
||||
smax=-1.e30
|
||||
do i=151,NSZ-150
|
||||
if(savg(i).gt.smax) then
|
||||
smax=savg(i)
|
||||
ipk=i
|
||||
endif
|
||||
! write(50,3001) i*df,savg(i)
|
||||
!3001 format(2f12.3)
|
||||
enddo
|
||||
base=(sum(savg(ipk-149:ipk-50)) + sum(savg(ipk+51:ipk+150)))/200.0
|
||||
|
||||
stest=smax - 0.5*(smax-base)
|
||||
ssum=savg(ipk)
|
||||
do i=1,50
|
||||
if(savg(ipk+i).lt.stest) exit
|
||||
ssum=ssum + savg(ipk+i)
|
||||
enddo
|
||||
do i=1,50
|
||||
if(savg(ipk-i).lt.stest) exit
|
||||
ssum=ssum + savg(ipk-i)
|
||||
enddo
|
||||
ww=ssum/savg(ipk)
|
||||
width=2
|
||||
t=ww*ww - 5.67
|
||||
if(t.gt.0.0) width=sqrt(t)
|
||||
width=df*width
|
||||
! print*,'Width:',width
|
||||
endif
|
||||
|
||||
nvec=ntrials
|
||||
if(ncand.gt.75) then
|
||||
@ -150,7 +182,6 @@ contains
|
||||
nvec=100
|
||||
endif
|
||||
|
||||
df=12000.0/NFFT !df = 12000.0/8192 = 1.465 Hz
|
||||
mode65=2**nsubmode
|
||||
nflip=1 !### temporary ###
|
||||
nqd=0
|
||||
@ -164,9 +195,9 @@ contains
|
||||
endif
|
||||
|
||||
do icand=1,ncand
|
||||
freq=ca(icand)%freq
|
||||
dtx=ca(icand)%dt
|
||||
sync1=ca(icand)%sync
|
||||
dtx=ca(icand)%dt
|
||||
freq=ca(icand)%freq
|
||||
if(ipass.eq.1) ntry65a=ntry65a + 1
|
||||
if(ipass.eq.2) ntry65b=ntry65b + 1
|
||||
call timer('decod65a',0)
|
||||
@ -190,6 +221,8 @@ contains
|
||||
nfreq=nint(freq+a(1))
|
||||
ndrift=nint(2.0*a(2))
|
||||
s2db=10.0*log10(sync2) - 35 !### empirical ###
|
||||
if(width.gt.3) s2db=s2db + 2.1*sqrt(width-3.0) + 1.5 + &
|
||||
0.11*(width-7.0) !### empirical^2 ###
|
||||
nsnr=nint(s2db)
|
||||
if(nsnr.lt.-30) nsnr=-30
|
||||
if(nsnr.gt.-1) nsnr=-1
|
||||
@ -208,7 +241,7 @@ contains
|
||||
|
||||
if (associated(this%callback) .and. nsum.ge.2) then
|
||||
call this%callback(nutc,sync1,nsnr,dtx-1.0,nfreq,ndrift, &
|
||||
avemsg,nftt,nqual,nsmo,nsum,minsync,nsubmode, &
|
||||
width,avemsg,nftt,nqual,nsmo,nsum,minsync,nsubmode, &
|
||||
naggressive)
|
||||
prtavg=.true.
|
||||
cycle
|
||||
@ -231,7 +264,8 @@ contains
|
||||
if(rtt.gt.r0(n)) cycle
|
||||
endif
|
||||
|
||||
5 if(decoded.eq.decoded0 .and. abs(freq-freq0).lt. 3.0 .and. &
|
||||
5 continue
|
||||
if(decoded.eq.decoded0 .and. abs(freq-freq0).lt. 3.0 .and. &
|
||||
minsync.ge.0) cycle !Don't display dupes
|
||||
if(decoded.ne.' ' .or. minsync.lt.0) then
|
||||
if( nsubtract .eq. 1 ) then
|
||||
@ -259,7 +293,7 @@ contains
|
||||
nqual=min(qual,9999.0)
|
||||
if (associated(this%callback)) then
|
||||
call this%callback(nutc,sync1,nsnr,dtx-1.0,nfreq,ndrift, &
|
||||
decoded,nft,nqual,nsmo,nsum,minsync,nsubmode, &
|
||||
width,decoded,nft,nqual,nsmo,nsum,minsync,nsubmode, &
|
||||
naggressive)
|
||||
end if
|
||||
endif
|
||||
|
||||
@ -8,5 +8,6 @@ module jt65_mod
|
||||
real s1(-255:256,126)
|
||||
real s3a(64,63)
|
||||
real pr(126)
|
||||
real width
|
||||
|
||||
end module jt65_mod
|
||||
|
||||
@ -29,14 +29,14 @@ contains
|
||||
call timer('jt65a ',0)
|
||||
call my_decoder%decode(my_callback,dd,npts=52*12000,newdat=.true., &
|
||||
nutc=nutc,nf1=nflow,nf2=nfhigh,nfqso=nfqso,ntol=ntol, &
|
||||
nsubmode=nsubmode, minsync=0,nagain=.false.,n2pass=n2pass, &
|
||||
nsubmode=nsubmode, minsync=-1,nagain=.false.,n2pass=n2pass, &
|
||||
nrobust=nrobust,ntrials=ntrials,naggressive=naggressive, &
|
||||
ndepth=ndepth,nclearave=nclearave,mycall=mycall,hiscall=hiscall, &
|
||||
hisgrid=hisgrid,nexp_decode=nexp_decode)
|
||||
call timer('jt65a ',1)
|
||||
end subroutine test
|
||||
|
||||
subroutine my_callback (this, utc, sync, snr, dt, freq, drift, decoded &
|
||||
subroutine my_callback (this,utc,sync,snr,dt,freq,drift,width,decoded &
|
||||
, ft, qual, smo, sum, minsync, submode, aggression)
|
||||
use jt65_decode
|
||||
implicit none
|
||||
@ -48,6 +48,7 @@ contains
|
||||
real, intent(in) :: dt
|
||||
integer, intent(in) :: freq
|
||||
integer, intent(in) :: drift
|
||||
real, intent(in) :: width
|
||||
character(len=22), intent(in) :: decoded
|
||||
integer, intent(in) :: ft
|
||||
integer, intent(in) :: qual
|
||||
@ -56,11 +57,14 @@ contains
|
||||
integer, intent(in) :: minsync
|
||||
integer, intent(in) :: submode
|
||||
integer, intent(in) :: aggression
|
||||
integer nwidth
|
||||
|
||||
nwidth=max(nint(width),2)
|
||||
write(*,1010) utc,snr,dt,freq,decoded
|
||||
1010 format(i4.4,i4,f5.1,i5,1x,'#',1x,a22)
|
||||
write(13,1012) utc,nint(sync),snr,dt,float(freq),drift,decoded,ft
|
||||
1012 format(i4.4,i4,i5,f6.1,f8.0,i4,3x,a22,' JT65',i4)
|
||||
write(13,1012) utc,nint(sync),snr,dt,freq,drift,nwidth, &
|
||||
decoded,ft,sum,smo
|
||||
1012 format(i4.4,i4,i5,f6.2,i5,i4,i3,1x,a22,' JT65',3i3)
|
||||
call flush(6)
|
||||
! write(79,3001) utc,sync,snr,dt,freq,candidates, &
|
||||
! hard_min,total_min,rtt,tries,ft,qual,decoded
|
||||
|
||||
@ -213,7 +213,7 @@ program jt65sim
|
||||
a=0.
|
||||
if(x.lt.3.0) then !Cutoff beyond x=3
|
||||
! a=sqrt(exp(-x*x)) !Gaussian
|
||||
a=sqrt(1.0/(1.0+x*x)) !Lorentzian
|
||||
a=sqrt(1.111/(1.0+x*x)-0.1) !Lorentzian
|
||||
call random_number(r1)
|
||||
phi1=twopi*r1
|
||||
z=a*cmplx(cos(phi1),sin(phi1))
|
||||
|
||||
Loading…
Reference in New Issue
Block a user