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Reduce FT4 chunk size fro 500 to 288 ms; suppress duplicate decodes from close to chunk ends.

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This commit is contained in:
Joe Taylor 2019-02-13 14:42:57 -05:00
parent 186482811a
commit c2cb55a68a
2 changed files with 10 additions and 12 deletions
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9
lib/ft4/ft4_decode.f90
View File

@ -5,7 +5,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso, &
include 'ft4_params.f90'
parameter (NSS=NSPS/NDOWN)
character message*37,msgsent*37
character message*37,msgsent*37,msg0*37
character c77*77
character*61 line,linex(100)
character*37 decodes(100)
@ -53,6 +53,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso, &
data icos4c/2,3,1,0/
data icos4d/3,2,0,1/
data graymap/0,1,3,2/
data msg0/' '/
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/
@ -65,7 +66,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso, &
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
mycall0,hiscall0,ncontest0,msg0
call clockit('ft4_deco',0)
hhmmss=cdatetime0(8:13)
@ -183,7 +184,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso, &
idfmax=12
idfstp=3
ibmin=0
ibmax=374
ibmax=215
ibstp=4
else
idfmin=idfbest-4
@ -440,6 +441,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso, &
do i=1,ndecodes
if(decodes(i).eq.message) idupe=1
enddo
if(ibest.le.10 .and. message.eq.msg0) idupe=1 !Already decoded
if(idupe.eq.1) exit
ndecodes=ndecodes+1
decodes(ndecodes)=message
@ -466,6 +468,7 @@ subroutine ft4_decode(cdatetime0,tbuf,nfa,nfb,nQSOProgress,ncontest,nfqso, &
1002 format(a17,i4,f5.1,i5,' Rx ',a37,5i5)
close(24)
linex(ndecodes)=line
if(ibest.ge.210) msg0=message !Possible dupe candidate
!### Temporary: assume most recent decoded message conveys "hiscall". ###
i0=index(message,' ')

13
widgets/mainwindow.cpp
View File

@ -8612,18 +8612,14 @@ void MainWindow::write_all(QString txRx, QString message)
void MainWindow::ft4Data(int k)
{
static int nhsec0=-1;
static bool wrapped=false;
short id[60000];
int nhsec=k/6000;
if(nhsec0>nhsec) nhsec0=-1;
if(nhsec==nhsec0) return;
if(k<60000 and !wrapped) return;
//Process FT4 data at 0.5 s intervals
int j=k/6000;
j=6000*j-60000;
//Process FT4 data at 0.288 s intervals
int j=k/3456;
j=3456*j-60000;
if(j<0) j+=NRING;
float tbuf=j/12000.0;
for(int i=0; i<60000; i++) {
@ -8707,8 +8703,7 @@ void MainWindow::ft4Data(int k)
}
//###
}
nhsec0=nhsec;
if(m_diskData and (k > (dec_data.params.kin-6000))) m_startAnother=m_loopall;
if(m_diskData and (k > (dec_data.params.kin-3456))) m_startAnother=m_loopall;
if(m_bNoMoreFiles) {
MessageBox::information_message(this, tr("Just one more file to open."));
m_bNoMoreFiles=false;