mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-03 16:01:18 -05:00
846ddf9039
2. Make averaging and DS separately selecteble. 3. Clear nftt and avemsg on Clear Avg. 4. Allow fer65 to handle message averaging. git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6543 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
425 lines
13 KiB
Fortran
425 lines
13 KiB
Fortran
module jt65_decode
|
|
|
|
integer, parameter :: NSZ=3413, NZMAX=60*12000
|
|
|
|
type :: jt65_decoder
|
|
procedure(jt65_decode_callback), pointer :: callback => null()
|
|
contains
|
|
procedure :: decode
|
|
end type jt65_decoder
|
|
|
|
!
|
|
! Callback function to be called with each decode
|
|
!
|
|
abstract interface
|
|
subroutine jt65_decode_callback(this,utc,sync,snr,dt,freq,drift, &
|
|
width,decoded,ft,qual,nsmo,nsum,minsync,nsubmode,naggressive)
|
|
|
|
import jt65_decoder
|
|
implicit none
|
|
class(jt65_decoder), intent(inout) :: this
|
|
integer, intent(in) :: utc
|
|
real, intent(in) :: sync
|
|
integer, intent(in) :: snr
|
|
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
|
|
integer, intent(in) :: nsmo
|
|
integer, intent(in) :: nsum
|
|
integer, intent(in) :: minsync
|
|
integer, intent(in) :: nsubmode
|
|
integer, intent(in) :: naggressive
|
|
|
|
end subroutine jt65_decode_callback
|
|
end interface
|
|
|
|
contains
|
|
|
|
subroutine decode(this,callback,dd0,npts,newdat,nutc,nf1,nf2,nfqso, &
|
|
ntol,nsubmode,minsync,nagain,n2pass,nrobust,ntrials,naggressive, &
|
|
ndepth,nclearave,mycall,hiscall,hisgrid,nexp_decode)
|
|
|
|
! Process dd0() data to find and decode JT65 signals.
|
|
|
|
use jt65_mod
|
|
use timer_module, only: timer
|
|
|
|
include 'constants.f90'
|
|
|
|
class(jt65_decoder), intent(inout) :: this
|
|
procedure(jt65_decode_callback) :: callback
|
|
real, intent(in) :: dd0(NZMAX)
|
|
integer, intent(in) :: npts, nutc, nf1, nf2, nfqso, ntol &
|
|
, nsubmode, minsync, n2pass, ntrials, naggressive, ndepth &
|
|
, nexp_decode
|
|
logical, intent(in) :: newdat, nagain, nrobust
|
|
character(len=12), intent(in) :: mycall, hiscall
|
|
character(len=6), intent(in) :: hisgrid
|
|
|
|
real dd(NZMAX)
|
|
real ss(322,NSZ)
|
|
real savg(NSZ)
|
|
real a(5)
|
|
character*22 decoded,decoded0,avemsg,deepave
|
|
type candidate
|
|
real freq
|
|
real dt
|
|
real sync
|
|
end type candidate
|
|
type(candidate) ca(300)
|
|
type accepted_decode
|
|
real freq
|
|
real dt
|
|
real sync
|
|
character*22 decoded
|
|
end type accepted_decode
|
|
type(accepted_decode) dec(50)
|
|
logical :: first_time,robust,prtavg,single_decode
|
|
|
|
integer h0(0:11),d0(0:11)
|
|
real r0(0:11)
|
|
common/decstats/ntry65a,ntry65b,n65a,n65b,num9,numfano
|
|
common/steve/thresh0
|
|
|
|
! 0 1 2 3 4 5 6 7 8 9 10 11
|
|
data h0/41,42,43,43,44,45,46,47,48,48,49,49/
|
|
data d0/71,72,73,74,76,77,78,80,81,82,83,83/
|
|
|
|
! 0 1 2 3 4 5 6 7 8 9 10 11
|
|
data r0/0.70,0.72,0.74,0.76,0.78,0.80,0.82,0.84,0.86,0.88,0.90,0.90/
|
|
data nutc0/-999/,nfreq0/-999/,nsave/0/
|
|
save
|
|
|
|
this%callback => callback
|
|
first_time=newdat
|
|
robust=nrobust
|
|
dd=dd0
|
|
ndecoded=0
|
|
do ipass=1,n2pass ! 2-pass decoding loop
|
|
first_time=.true.
|
|
if(ipass.eq.1) then !first-pass parameters
|
|
thresh0=2.5
|
|
nsubtract=1
|
|
elseif( ipass.eq.2 ) then !second-pass parameters
|
|
thresh0=2.5
|
|
nsubtract=0
|
|
endif
|
|
if(n2pass.lt.2) nsubtract=0
|
|
|
|
! if(newdat) then
|
|
call timer('symsp65 ',0)
|
|
ss=0.
|
|
call symspec65(dd,npts,ss,nhsym,savg) !Get normalized symbol spectra
|
|
call timer('symsp65 ',1)
|
|
! endif
|
|
nfa=nf1
|
|
nfb=nf2
|
|
single_decode=iand(nexp_decode,32).ne.0
|
|
if(single_decode .or. (naggressive.gt.0 .and. ntol.lt.1000)) then
|
|
nfa=max(200,nfqso-ntol)
|
|
nfb=min(4000,nfqso+ntol)
|
|
thresh0=1.0
|
|
endif
|
|
df=12000.0/8192.0 !df = 1.465 Hz
|
|
if(single_decode) then
|
|
ia=max(1,nint(nfa/df)-100)
|
|
ib=min(NSZ,nint(nfb/df)+100)
|
|
nz=ib-ia+1
|
|
call lorentzian(savg(ia),nz,a)
|
|
baseline=a(1)
|
|
amp=a(2)
|
|
f0=(a(3)+ia-1)*df
|
|
width=a(4)*df
|
|
! write(*,3001) baseline,amp,f0,width
|
|
!3001 format(4f10.3)
|
|
endif
|
|
|
|
! robust = .false.: use float ccf. Only if ncand>50 fall back to robust (1-bit) ccf
|
|
! robust = .true. : use only robust (1-bit) ccf
|
|
ncand=0
|
|
if(.not.robust) then
|
|
call timer('sync65 ',0)
|
|
call sync65(ss,nfa,nfb,naggressive,ntol,nhsym,ca,ncand,0, &
|
|
single_decode)
|
|
call timer('sync65 ',1)
|
|
endif
|
|
if(ncand.gt.50) robust=.true.
|
|
if(robust) then
|
|
ncand=0
|
|
call timer('sync65 ',0)
|
|
call sync65(ss,nfa,nfb,naggressive,ntol,nhsym,ca,ncand,1, &
|
|
single_decode)
|
|
call timer('sync65 ',1)
|
|
endif
|
|
|
|
! 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
|
|
nvec=ntrials
|
|
if(ncand.gt.75) then
|
|
! write(*,*) 'Pass ',ipass,' ncandidates too large ',ncand
|
|
nvec=100
|
|
endif
|
|
|
|
mode65=2**nsubmode
|
|
nflip=1 !### temporary ###
|
|
nqd=0
|
|
decoded0=""
|
|
freq0=0.
|
|
prtavg=.false.
|
|
if(.not.nagain) nsum=0
|
|
if(nclearave.eq.1) then
|
|
nsum=0
|
|
nsave=0
|
|
endif
|
|
|
|
do icand=1,ncand
|
|
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)
|
|
call decode65a(dd,npts,first_time,nqd,freq,nflip,mode65,nvec, &
|
|
naggressive,ndepth,mycall,hiscall,hisgrid,nexp_decode, &
|
|
sync2,a,dtx,nft,qual,nhist,nsmo,decoded)
|
|
call timer('decod65a',1)
|
|
if(nft.eq.1) nsum=1
|
|
|
|
! ncandidates=param(0)
|
|
nhard_min=param(1)
|
|
! nsoft_min=param(2)
|
|
! nera_best=param(3)
|
|
nrtt1000=param(4)
|
|
ntotal_min=param(5)
|
|
! ntry=param(6)
|
|
! nq1000=param(7)
|
|
! npp1=param(8)
|
|
nsmo=param(9)
|
|
|
|
nfreq=nint(freq+a(1))
|
|
ndrift=nint(2.0*a(2))
|
|
if(single_decode) then
|
|
s2db=sync1 - 30.0 + db(width/3.3) !### VHF/UHF/microwave
|
|
else
|
|
s2db=10.0*log10(sync2) - 35 !### empirical (HF)
|
|
endif
|
|
nsnr=nint(s2db)
|
|
if(nsnr.lt.-30) nsnr=-30
|
|
if(nsnr.gt.-1) nsnr=-1
|
|
nftt=0
|
|
|
|
if(nft.ne.1 .and. iand(ndepth,16).eq.16 .and. (.not.prtavg)) then
|
|
! Single-sequence FT decode failed, so try for an average FT decode.
|
|
if(nutc.ne.nutc0 .or. abs(nfreq-nfreq0).gt.ntol) then
|
|
! This is a new minute or a new frequency, so call avg65.
|
|
nutc0=nutc
|
|
nfreq0=nfreq
|
|
nsave=nsave+1
|
|
nsave=mod(nsave-1,64)+1
|
|
call avg65(nutc,nsave,sync1,dtx,nflip,nfreq,mode65,ntol, &
|
|
ndepth,ntrials,naggressive,nclearave,neme,mycall, &
|
|
hiscall,hisgrid,nftt,avemsg,qave,deepave,nsum,ndeepave)
|
|
|
|
if (associated(this%callback) .and. nsum.ge.2) then
|
|
call this%callback(nutc,sync1,nsnr,dtx-1.0,nfreq,ndrift, &
|
|
width,avemsg,nftt,nqual,nsmo,nsum,minsync,nsubmode, &
|
|
naggressive)
|
|
prtavg=.true.
|
|
cycle
|
|
end if
|
|
|
|
endif
|
|
endif
|
|
|
|
if(nftt.eq.1) then
|
|
nft=1
|
|
decoded=avemsg
|
|
go to 5
|
|
endif
|
|
n=naggressive
|
|
rtt=0.001*nrtt1000
|
|
if(nft.lt.2 .and. minsync.ge.0) then
|
|
if(nhard_min.gt.50) cycle
|
|
if(nhard_min.gt.h0(n)) cycle
|
|
if(ntotal_min.gt.d0(n)) cycle
|
|
if(rtt.gt.r0(n)) cycle
|
|
endif
|
|
|
|
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
|
|
call timer('subtr65 ',0)
|
|
call subtract65(dd,npts,freq,dtx)
|
|
call timer('subtr65 ',1)
|
|
endif
|
|
|
|
ndupe=0 ! de-dedupe
|
|
do i=1, ndecoded
|
|
if(decoded==dec(i)%decoded) then
|
|
ndupe=1
|
|
exit
|
|
endif
|
|
enddo
|
|
|
|
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
|
|
dec(ndecoded)%freq=freq+a(1)
|
|
dec(ndecoded)%dt=dtx
|
|
dec(ndecoded)%sync=sync2
|
|
dec(ndecoded)%decoded=decoded
|
|
nqual=min(qual,9999.0)
|
|
if (associated(this%callback)) then
|
|
call this%callback(nutc,sync1,nsnr,dtx-1.0,nfreq,ndrift, &
|
|
width,decoded,nft,nqual,nsmo,nsum,minsync,nsubmode, &
|
|
naggressive)
|
|
end if
|
|
endif
|
|
decoded0=decoded
|
|
freq0=freq
|
|
if(decoded0.eq.' ') decoded0='*'
|
|
endif
|
|
enddo !Candidate loop
|
|
if(ndecoded.lt.1) exit
|
|
enddo !Two-pass loop
|
|
|
|
return
|
|
end subroutine decode
|
|
|
|
subroutine avg65(nutc,nsave,snrsync,dtxx,nflip,nfreq,mode65,ntol,ndepth, &
|
|
ntrials,naggressive,nclearave,neme,mycall,hiscall,hisgrid,nftt, &
|
|
avemsg,qave,deepave,nsum,ndeepave)
|
|
|
|
! Decodes averaged JT65 data
|
|
|
|
use jt65_mod
|
|
parameter (MAXAVE=64)
|
|
character*22 avemsg,deepave,deepbest
|
|
character mycall*12,hiscall*12,hisgrid*6
|
|
character*1 csync,cused(64)
|
|
integer iused(64)
|
|
! Accumulated data for message averaging
|
|
integer iutc(MAXAVE)
|
|
integer nfsave(MAXAVE)
|
|
integer listutc(10)
|
|
integer nflipsave(MAXAVE)
|
|
! real s1a(-255:256,126)
|
|
! real s1save(-255:256,126,MAXAVE)
|
|
real s3save(64,63,MAXAVE)
|
|
real s3b(64,63)
|
|
real dtsave(MAXAVE)
|
|
real syncsave(MAXAVE)
|
|
logical first
|
|
data first/.true./
|
|
save
|
|
|
|
if(first .or. (nclearave.eq.1)) then
|
|
iutc=-1
|
|
nfsave=0
|
|
dtdiff=0.2
|
|
first=.false.
|
|
s3b=0.
|
|
s3save=0.
|
|
nsave=1 !### ???
|
|
endif
|
|
|
|
do i=1,64
|
|
if(nutc.eq.iutc(i) .and. abs(nhz-nfsave(i)).le.ntol) go to 10
|
|
enddo
|
|
|
|
! Save data for message averaging
|
|
iutc(nsave)=nutc
|
|
syncsave(nsave)=snrsync
|
|
dtsave(nsave)=dtxx
|
|
nfsave(nsave)=nfreq
|
|
nflipsave(nsave)=nflip
|
|
! s1save(-255:256,1:126,nsave)=s1
|
|
s3save(1:64,1:63,nsave)=s3a
|
|
|
|
10 syncsum=0.
|
|
dtsum=0.
|
|
nfsum=0
|
|
nsum=0
|
|
s3b=0.
|
|
|
|
do i=1,64 !Consider all saved spectra
|
|
cused(i)='.'
|
|
if(iutc(i).lt.0) cycle
|
|
if(mod(iutc(i),2).ne.mod(nutc,2)) cycle !Use only same (odd/even) seq
|
|
if(abs(dtxx-dtsave(i)).gt.dtdiff) cycle !DT must match
|
|
if(abs(nfreq-nfsave(i)).gt.ntol) cycle !Freq must match
|
|
if(nflip.ne.nflipsave(i)) cycle !Sync type (*/#) must match
|
|
s3b=s3b + s3save(1:64,1:63,i)
|
|
syncsum=syncsum + syncsave(i)
|
|
dtsum=dtsum + dtsave(i)
|
|
nfsum=nfsum + nfsave(i)
|
|
cused(i)='$'
|
|
nsum=nsum+1
|
|
iused(nsum)=i
|
|
enddo
|
|
if(nsum.lt.64) iused(nsum+1)=0
|
|
|
|
syncave=0.
|
|
dtave=0.
|
|
fave=0.
|
|
if(nsum.gt.0) then
|
|
syncave=syncsum/nsum
|
|
dtave=dtsum/nsum
|
|
fave=float(nfsum)/nsum
|
|
endif
|
|
|
|
do i=1,nsave
|
|
csync='*'
|
|
if(nflipsave(i).lt.0.0) csync='#'
|
|
write(14,1000) cused(i),iutc(i),syncsave(i),dtsave(i),nfsave(i),csync
|
|
1000 format(a1,i5.4,f6.1,f6.2,i6,1x,a1)
|
|
enddo
|
|
if(nsum.lt.2) go to 900
|
|
|
|
! rewind 62
|
|
! sqt=0.
|
|
! sqf=0.
|
|
! do j=1,64
|
|
! i=iused(j)
|
|
! if(i.eq.0) exit
|
|
! csync='*'
|
|
! if(nflipsave(i).lt.0) csync='#'
|
|
! write(62,3001) i,iutc(i),syncsave(i),dtsave(i),nfsave(i),csync
|
|
!3001 format(i3,i6.4,f6.1,f6.2,i6,1x,a1)
|
|
! sqt=sqt + (dtsave(i)-dtave)**2
|
|
! sqf=sqf + (nfsave(i)-fave)**2
|
|
! enddo
|
|
! rmst=0.
|
|
! rmsf=0.
|
|
! if(nsum.ge.2) then
|
|
! rmst=sqrt(sqt/(nsum-1))
|
|
! rmsf=sqrt(sqf/(nsum-1))
|
|
! endif
|
|
! write(62,3002)
|
|
!3002 format(16x,'----- -----')
|
|
! write(62,3003) dtave,nint(fave)
|
|
! write(62,3003) rmst,nint(rmsf)
|
|
!3003 format(15x,f6.2,i6)
|
|
! flush(62)
|
|
|
|
nadd=nsum*mode65
|
|
nftt=0
|
|
! nexp_decode=0 !### not used, anyway
|
|
|
|
call extract(s3b,nadd,mode65,ntrials,naggressive,ndepth,mycall, &
|
|
hiscall,hisgrid,nexp_decode,ncount,nhist,avemsg,ltext,nftt,qual)
|
|
|
|
900 continue
|
|
return
|
|
end subroutine avg65
|
|
|
|
end module jt65_decode
|