Another try at optimizing choices for decoding. Not done yet!

git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@3271 ab8295b8-cf94-4d9e-aec4-7959e3be5d79

lib/chkss2.f90

@@ -8,7 +8,7 @@ subroutine chkss2(ss2,schk)
   ave=sum(ss2)/(9*85)
   s=ss2/ave-1.0
 
-!  call zplot9(s)
+  call zplot9(s)
   s1=0.
   do lag=0,5
      do i=1,16

lib/decoder.f90

@@ -74,8 +74,8 @@ subroutine decoder(ss,c0,nstandalone)
      endif
 
      if(nqd.eq.1) then
-        limit=200000
+        limit=100000
-        ccflim=2.5
+        ccflim=2.0
         nfa1=nfqso-ntol
         nfb1=nfqso+ntol
      else
@@ -115,8 +115,7 @@ subroutine decoder(ss,c0,nstandalone)
 
      do i=ia,ib
         f=(i-1)*df3
-        if(done(i) .or. (.not.ccfok(i)) .or. (ccfred(i).lt.ccflim-1.0) .or. &
+        if(done(i) .or. (.not.ccfok(i)) .or. (ccfred(i).lt.ccflim-1.0)) cycle
-             (ccfred(i).lt.ccfred(i+1))) cycle
         if(nqd.eq.1 .or.                                                   &
            (ccfred(i).ge.ccflim .and. abs(f-fgood).gt.10.0*df8)) then
 
@@ -129,7 +128,7 @@ subroutine decoder(ss,c0,nstandalone)
                 drift,schk,i1SoftSymbols)
            call timer('softsym ',1)
 
-           if(schk.ge.3.0) then
+           if(schk.ge.2.0) then
 
               call timer('decode9 ',0)
               call decode9(i1SoftSymbols,limit,nlim,msg)

lib/symspec.f90

@@ -86,8 +86,8 @@ subroutine symspec(k,ntrperiod,nsps,ingain,nb,nbslider,pxdb,s,red,    &
   peaklimit=sigmas*max(10.0,rms)
   px=0.
 
-  nwindow=2
+!  nwindow=2
-!  nwindow=0                                    !### No windowing ###
+  nwindow=0                                    !### No windowing ###
   kstep1=NFFT1
   if(nwindow.ne.0) kstep1=NFFT1/2
   fac=2.0/NFFT1
@@ -97,11 +97,11 @@ subroutine symspec(k,ntrperiod,nsps,ingain,nb,nbslider,pxdb,s,red,    &
      do i=1,NFFT1
         x0(i)=gain*id2(k1+i)
      enddo
-     call timf2(x0,k,NFFT1,nwindow,nb,peaklimit,x1,   &
+!     call timf2(x0,k,NFFT1,nwindow,nb,peaklimit,x1,   &
-          slimit,lstrong,px,nzap)
+!          slimit,lstrong,px,nzap)
 
 ! Mix at 1500 Hz, lowpass at +/-750 Hz, and downsample to 1500 Hz complex.
-     x2(106:105+kstep1)=x1(1:kstep1)
+     x2(106:105+kstep1)=x0(1:kstep1)
      call fil3(x2,kstep1+105,c0(k8+1),n2)
      x2(1:105)=x1(kstep1-104:kstep1)   !Save 105 trailing samples
      k1=k1+kstep1

lib/symspec2.f90

@@ -38,7 +38,7 @@ subroutine symspec2(c5,nz3,nsps8,nspsd,fsample,freq,drift,snrdb,schk,    &
 !  write(30) freq,drift,ss2
 !  call flush(30)
   call chkss2(ss2,schk)
-  if(schk.lt.3.0) go to 900
+  if(schk.lt.2.0) go to 900
 !###
   ss=0.
   sig=0.

lib/sync9.f90

@@ -14,6 +14,8 @@ subroutine sync9(ss,nzhsym,lag1,lag2,ia,ib,ccfred,ipkbest)
   do i=ia,ib                         !Loop over freq range
      ss1=ss(1:184,i)
      call pctile(ss1,nzhsym,40,xmed)
+!     xmed=sum(ss1(1:nzhsym))/nzhsym
+
      ss1=ss1/xmed - 1.0
      do j=1,nzhsym
         if(ss1(j).gt.3.0) ss1(j)=3.0
@@ -21,13 +23,13 @@ subroutine sync9(ss,nzhsym,lag1,lag2,ia,ib,ccfred,ipkbest)
 
      smax=0.
      do lag=lag1,lag2                !DT = 2.5 to 5.0 s
-        sum=0.
+        sum1=0.
         do j=1,16                    !Sum over 16 sync symbols
            k=ii2(j) + lag
-           if(k.ge.1 .and. k.le.nzhsym) sum=sum + ss1(k)
+           if(k.ge.1 .and. k.le.nzhsym) sum1=sum1 + ss1(k)
         enddo
-        if(sum.gt.smax) then
+        if(sum1.gt.smax) then
-           smax=sum
+           smax=sum1
            ipk=i 
         endif
      enddo

mainwindow.cpp

@@ -1,4 +1,4 @@
-//------------------------------------------------------------- MainWindow
+//------------------------------------------------------------ MainWindow
 #include "mainwindow.h"
 #include "ui_mainwindow.h"
 #include "devsetup.h"