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Make MSK144 SWL mode work. Needs testing\!

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This commit is contained in:
Steve Franke 2018-09-24 15:10:57 -05:00
parent 45031738bf
commit af1be084d4
7 changed files with 52 additions and 34 deletions
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24
lib/77bit/packjt77.f90
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@ -1,10 +1,11 @@
module packjt77
! These variables are accessible from outside via "use packjt":
parameter (MAXHASH=1000)
parameter (MAXHASH=1000,MAXRECENT=10)
character*13 callsign(MAXHASH)
integer ihash10(MAXHASH),ihash12(MAXHASH),ihash22(MAXHASH)
integer n28a,n28b,nzhash
character*13 recent_calls(MAXRECENT)
contains
@ -358,11 +359,13 @@ subroutine unpack77(c77,msg,unpk77_success)
i=index(call_1,' ')
if(i.ge.4 .and. ipa.eq.1 .and. i3.eq.1) call_1(i:i+1)='/R'
if(i.ge.4 .and. ipa.eq.1 .and. i3.eq.2) call_1(i:i+1)='/P'
if(i.ge.4) call add_call_to_recent_calls(call_1)
endif
if(index(call_2,'<').le.0) then
i=index(call_2,' ')
if(i.ge.4 .and. ipb.eq.1 .and. i3.eq.1) call_2(i:i+1)='/R'
if(i.ge.4 .and. ipb.eq.1 .and. i3.eq.2) call_2(i:i+1)='/P'
if(i.ge.4) call add_call_to_recent_calls(call_2)
endif
if(igrid4.le.MAXGRID4) then
n=igrid4
@ -1159,5 +1162,24 @@ subroutine unpacktext77(c71,c13)
return
end subroutine unpacktext77
subroutine add_call_to_recent_calls(callsign)
character*13 callsign
logical ladd
! only add if the callsign is not already on the list
ladd=.true.
do i=1,MAXRECENT-1 ! if callsign is at the end of the list add it again
if(recent_calls(i).eq.callsign) ladd=.false.
enddo
if(ladd) then
do i=MAXRECENT,2,-1
recent_calls(i)=recent_calls(i-1)
enddo
recent_calls(1)=callsign
endif
return
end subroutine add_call_to_recent_calls
end module packjt77

3
lib/msk144decodeframe.f90
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@ -1,9 +1,8 @@
subroutine msk144decodeframe(c,softbits,msgreceived,nsuccess,recent_calls,nrecent)
subroutine msk144decodeframe(c,softbits,msgreceived,nsuccess)
! use timer_module, only: timer
use packjt77
parameter (NSPM=864)
character*37 msgreceived
character*12 recent_calls(nrecent)
character*77 c77
complex cb(42)
complex cfac,cca,ccb

7
lib/msk144spd.f90
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@ -1,13 +1,13 @@
subroutine msk144spd(cbig,n,ntol,nsuccess,msgreceived,fc,fret,tret,navg,ct, &
softbits,recent_calls,nrecent)
softbits)
! MSK144 short-ping-decoder
use packjt77
use timer_module, only: timer
parameter (NSPM=864, MAXSTEPS=100, NFFT=NSPM, MAXCAND=5, NPATTERNS=6)
character*37 msgreceived
character*12 recent_calls(nrecent)
complex cbig(n)
complex cdat(3*NSPM) !Analytic signal
complex c(NSPM)
@ -179,8 +179,7 @@ subroutine msk144spd(cbig,n,ntol,nsuccess,msgreceived,fc,fret,tret,navg,ct, &
if( is.eq.2) ic0=max(1,ic0-1)
if( is.eq.3) ic0=min(NSPM,ic0+1)
ct=cshift(c,ic0-1)
call msk144decodeframe(ct,softbits,msgreceived,ndecodesuccess, &
recent_calls,nrecent)
call msk144decodeframe(ct,softbits,msgreceived,ndecodesuccess)
if( ndecodesuccess .gt. 0 ) then
tret=(nstart(icand)+NSPM/2)/fs
fret=fest

10
lib/msk40decodeframe.f90
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@ -1,19 +1,19 @@
subroutine msk40decodeframe(c,mycall,hiscall,xsnr,bswl,nhasharray, &
recent_calls,nrecent,msgreceived,nsuccess)
msgreceived,nsuccess)
! use timer_module, only: timer
use packjt77
parameter (NSPM=240)
character*4 rpt(0:15)
character*6 mycall,hiscall,mycall0,hiscall0
character*22 hashmsg,msgreceived
character*12 recent_calls(nrecent)
complex cb(42)
complex cfac,cca
complex c(NSPM)
integer*1 cw(32)
integer*1 decoded(16)
integer s8r(8),hardbits(40)
integer nhasharray(nrecent,nrecent)
integer nhasharray(MAXRECENT,MAXRECENT)
real*8 dt, fs, pi, twopi
real cbi(42),cbq(42)
real pp(12)
@ -139,8 +139,8 @@ subroutine msk40decodeframe(c,mycall,hiscall,xsnr,bswl,nhasharray, &
trim(hiscall),">",rpt(nrxrpt)
return
elseif(bswl .and. nhammd.le.4 .and. cord.lt.0.65 .and. nrxrpt.ge.7 ) then
do i=1,nrecent
do j=i+1,nrecent
do i=1,MAXRECENT
do j=i+1,MAXRECENT
if( nrxhash .eq. nhasharray(i,j) ) then
nsuccess=2
write(msgreceived,'(a1,a,1x,a,a1,1x,a4)') "<",trim(recent_calls(i)), &

9
lib/msk40spd.f90
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@ -1,13 +1,13 @@
subroutine msk40spd(cbig,n,ntol,mycall,hiscall,bswl,nhasharray,recent_calls, &
nrecent,nsuccess,msgreceived,fc,fret,tret,navg)
subroutine msk40spd(cbig,n,ntol,mycall,hiscall,bswl,nhasharray, &
nsuccess,msgreceived,fc,fret,tret,navg)
! msk40 short-ping-decoder
use packjt77
use timer_module, only: timer
parameter (NSPM=240, MAXSTEPS=150, NFFT=NSPM, MAXCAND=5, NPATTERNS=6)
character*6 mycall,hiscall
character*22 msgreceived
character*12 recent_calls(nrecent)
complex cbig(n)
complex cdat(3*NSPM) !Analytic signal
complex c(NSPM)
@ -19,7 +19,6 @@ subroutine msk40spd(cbig,n,ntol,mycall,hiscall,bswl,nhasharray,recent_calls, &
integer navpatterns(3,NPATTERNS)
integer navmask(3)
integer nstart(MAXCAND)
integer nhasharray(nrecent,nrecent)
logical ismask(NFFT)
logical*1 bswl
real detmet(-2:MAXSTEPS+3)
@ -181,7 +180,7 @@ subroutine msk40spd(cbig,n,ntol,mycall,hiscall,bswl,nhasharray,recent_calls, &
if( is.eq.3) ic0=min(NSPM,ic0+1)
ct=cshift(c,ic0-1)
call msk40decodeframe(ct,mycall,hiscall,xsnr,bswl,nhasharray, &
recent_calls,nrecent,msgreceived,ndecodesuccess)
msgreceived,ndecodesuccess)
if( ndecodesuccess .gt. 0 ) then
!write(*,*) icand, iav, ipk, is, tret, fret, msgreceived
tret=(nstart(icand)+NSPM/2)/fs

21
lib/mskrtd.f90
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@ -5,11 +5,12 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
! Analysis block size = NZ = 7168 samples, t_block = 0.597333 s
! Called from hspec() at half-block increments, about 0.3 s
use packjt77
parameter (NZ=7168) !Block size
parameter (NSPM=864) !Number of samples per message frame
parameter (NFFT1=8192) !FFT size for making analytic signal
parameter (NPATTERNS=4) !Number of frame averaging patterns to try
parameter (NRECENT=10) !Number of recent calls to remember
parameter (NSHMEM=50) !Number of recent SWL messages to remember
character*4 decsym !"&" for mskspd or "^" for long averages
@ -19,7 +20,6 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
character*80 line !Formatted line with UTC dB T Freq Msg
character*12 mycall,hiscall
character*6 mygrid
character*12 recent_calls(NRECENT)
character*37 recent_shmsgs(NSHMEM)
character*512 datadir
@ -31,7 +31,7 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
integer iavmask(8)
integer iavpatterns(8,NPATTERNS)
integer npkloc(10)
integer nhasharray(NRECENT,NRECENT)
integer nhasharray(MAXRECENT,MAXRECENT)
integer nsnrlast,nsnrlastswl
real d(NFFT1)
@ -55,14 +55,14 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
1,1,1,1,1,1,1,0/
data xmc/2.0,4.5,2.5,3.5/ !Used to set time at center of averaging mask
save first,tsec0,nutc00,pnoise,cdat,msglast,msglastswl, &
nsnrlast,nsnrlastswl,recent_calls,nhasharray,recent_shmsgs
nsnrlast,nsnrlastswl,nhasharray,recent_shmsgs
if(first) then
tsec0=tsec
nutc00=nutc0
pnoise=-1.0
do i=1,nrecent
recent_calls(i)(1:12)=' '
do i=1,MAXRECENT
recent_calls(i)(1:13)=' '
enddo
do i=1,nshmem
recent_shmsgs(i)(1:37)=' '
@ -117,10 +117,10 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
! 3 frames along with 2- and 3-frame averages.
np=8*NSPM
call msk144spd(cdat,np,ntol,ndecodesuccess,msgreceived,fc,fest,tdec,navg,ct, &
softbits,recent_calls,nrecent)
softbits)
if(ndecodesuccess.eq.0 .and. (bshmsg.or.bswl)) then
call msk40spd(cdat,np,ntol,mycall(1:6),hiscall(1:6),bswl,nhasharray, &
recent_calls,nrecent,ndecodesuccess,msgrx22,fc,fest,tdec,navg)
ndecodesuccess,msgrx22,fc,fest,tdec,navg)
if( ndecodesuccess .ge. 1 ) msgreceived(1:22)=msgrx22
endif
if( ndecodesuccess .ge. 1 ) then
@ -152,8 +152,7 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
if(is.eq.2) ic0=max(1,ic0-1)
if(is.eq.3) ic0=min(NSPM,ic0+1)
ct=cshift(c,ic0-1)
call msk144decodeframe(ct,softbits,msgreceived,ndecodesuccess, &
recent_calls,nrecent)
call msk144decodeframe(ct,softbits,msgreceived,ndecodesuccess)
if(ndecodesuccess .gt. 0) then
tdec=tsec+xmc(iavg)*tframe
goto 900
@ -209,7 +208,7 @@ subroutine mskrtd(id2,nutc0,tsec,ntol,nrxfreq,ndepth,mycall,mygrid,hiscall, &
msglast=msgreceived
nsnrlast=nsnr
if(.not. bshdecode) then
call update_hasharray(recent_calls,nrecent,nhasharray)
call update_hasharray(nhasharray)
endif
if( .not.bshdecode ) then
write(line,1020) nutc0,nsnr,tdec,nint(fest),decsym,msgreceived(1:22), &

12
lib/update_hasharray.f90
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@ -1,12 +1,12 @@
subroutine update_hasharray(recent_calls,nrecent,nhasharray)
character*12 recent_calls(nrecent)
subroutine update_hasharray(nhasharray)
use packjt77
character*22 hashmsg
integer nhasharray(nrecent,nrecent)
integer nhasharray(MAXRECENT,MAXRECENT)
nhasharray=-1
do i=1,nrecent
do j=i+1,nrecent
do i=1,MAXRECENT
do j=i+1,MAXRECENT
if( recent_calls(i)(1:1) .ne. ' ' .and. recent_calls(j)(1:1) .ne. ' ' ) then
hashmsg=trim(recent_calls(i))//' '//trim(recent_calls(j))
call fmtmsg(hashmsg,iz)