mirror of https://github.com/saitohirga/WSJT-X.git
Fix a conflict between noise baseline percentile level and noise blanker percentage. Both were using the npct variable. Add an option for an FST4 pass when in FST4W mode.
This commit is contained in:
Steven Franke
Bill Somerville
parent
0fef0cc6e6
commit
41f587c240
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@ -43,6 +43,7 @@ contains
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procedure(fst4_decode_callback) :: callback
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character*37 decodes(100)
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character*37 msg,msgsent
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character*8 s_nfa_nfb
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character*20 wcalls(MAXWCALLS), wpart
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character*77 c77
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character*12 mycall,hiscall
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@ -58,7 +59,6 @@ contains
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logical lagain,lapcqonly
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integer itone(NN)
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integer hmod
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integer ipct(0:7)
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integer*1 apmask(240),cw(240),hdec(240)
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integer*1 message101(101),message74(74),message77(77)
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integer*1 rvec(77)
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@ -74,7 +74,6 @@ contains
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integer*2 iwave(30*60*12000)
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data ipct/0,8,14,4,12,2,10,6/
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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/
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data mrrr/0,1,1,1,1,1,1,0,1,0,0,1,0,0,1,0,0,0,1/
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data m73/0,1,1,1,1,1,1,0,1,0,0,1,0,1,0,0,0,0,1/
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@ -247,6 +246,7 @@ contains
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do_k50_decode=.false.
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endif
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! Noise blanker setup
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ndropmax=1
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single_decode=iand(nexp_decode,32).ne.0
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npct=0
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@ -262,278 +262,260 @@ contains
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inb2=1 !Try NB = 0, 1, 2,... 20%
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else
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inb1=0 !Fixed NB value, 0 to 25%
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ipct(0)=npct
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endif
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if(iwspr.eq.1) then !FST4W
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!300 Hz wide noise-fit window
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nfa=max(100,nint(nfqso+1.5*baud-150))
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nfb=min(4800,nint(nfqso+1.5*baud+150))
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fa=max(100,nint(nfqso+1.5*baud-ntol)) ! signal search window
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fb=min(4800,nint(nfqso+1.5*baud+ntol))
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else if(single_decode) then
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fa=max(100,nint(nfa+1.5*baud))
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fb=min(4800,nint(nfb+1.5*baud))
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! extend noise fit 100 Hz outside of search window
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nfa=max(100,nfa-100)
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nfb=min(4800,nfb+100)
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else
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fa=max(100,nint(nfa+1.5*baud))
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fb=min(4800,nint(nfb+1.5*baud))
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! extend noise fit 100 Hz outside of search window
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nfa=max(100,nfa-100)
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nfb=min(4800,nfb+100)
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! If environment variable FST4W_ALSO_FST4 exists then, when in FST4W mode,
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! do a second pass for FST4 decodes. The value of FST4W_ALSO_FST4
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! is of the form xxxxyyyy where nfa=xxxx and nfb=yyyy are the
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! search limits for the FST4 decoding pass, e.g.
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! FST4W_ALSO_FST4=08001700 will set FST4 search window to [800Hz,1700Hz]
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!
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nmode=1
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call get_environment_variable("FST4W_ALSO_FST4",s_nfa_nfb,nlength)
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if(iwspr.eq.1 .and. nlength.eq.8) then
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read(s_nfa_nfb,"(i4.4,i4.4)") nfa_mode2,nfb_mode2
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nmode=2
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endif
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ndecodes=0
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decodes=' '
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new_callsign=.false.
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do inb=0,inb1,inb2
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if(nb.lt.0) npct=inb
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call blanker(iwave,nfft1,ndropmax,npct,c_bigfft)
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do imode=1,nmode
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if(imode.eq.1) iwspr=1
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if(imode.eq.2) then ! this is FST4 after a FST4W pass
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iwspr=0
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nfa=nfa_mode2
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nfb=nfb_mode2
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endif
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! nfa,nfb: define the noise-baseline analysis window
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! fa, fb: define the signal search window
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! We usually make nfa<fa and nfb>fb so that noise baseline analysis
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! window extends outside of the [fa,fb] window where we think the signals are.
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!
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if(iwspr.eq.1) then !FST4W
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nfa=max(100,nfqso-ntol-100)
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nfb=min(4800,nfqso+ntol+100)
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fa=max(100,nint(nfqso+1.5*baud-ntol)) ! signal search window
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fb=min(4800,nint(nfqso+1.5*baud+ntol))
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else if(iwspr.eq.0) then
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if(imode.eq.1 .and. single_decode) then
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fa=max(100,nint(nfa+1.5*baud))
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fb=min(4800,nint(nfb+1.5*baud))
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! extend noise fit 100 Hz outside of search window
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nfa=max(100,nfa-100)
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nfb=min(4800,nfb+100)
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else
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fa=max(100,nint(nfa+1.5*baud))
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fb=min(4800,nint(nfb+1.5*baud))
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! extend noise fit 100 Hz outside of search window
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nfa=max(100,nfa-100)
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nfb=min(4800,nfb+100)
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endif
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endif
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ndecodes=0
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decodes=' '
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new_callsign=.false.
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do inb=0,inb1,inb2
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if(nb.lt.0) npct=inb ! we are looping over blanker settings
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call blanker(iwave,nfft1,ndropmax,npct,c_bigfft)
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! The big fft is done once and is used for calculating the smoothed spectrum
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! and also for downconverting/downsampling each candidate.
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call four2a(c_bigfft,nfft1,1,-1,0) !r2c
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nhicoh=1
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nsyncoh=8
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minsync=1.20
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if(ntrperiod.eq.15) minsync=1.15
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call four2a(c_bigfft,nfft1,1,-1,0) !r2c
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nhicoh=1
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nsyncoh=8
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minsync=1.20
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if(ntrperiod.eq.15) minsync=1.15
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! Get first approximation of candidate frequencies
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call get_candidates_fst4(c_bigfft,nfft1,nsps,hmod,fs,fa,fb,nfa,nfb, &
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minsync,ncand,candidates0)
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isbest=0
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fc2=0.
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do icand=1,ncand
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fc0=candidates0(icand,1)
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if(iwspr.eq.0 .and. nb.lt.0 .and. npct.ne.0 .and. &
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abs(fc0-(nfqso+1.5*baud)).gt.ntol) cycle
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detmet=candidates0(icand,2)
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call get_candidates_fst4(c_bigfft,nfft1,nsps,hmod,fs,fa,fb,nfa,nfb, &
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minsync,ncand,candidates0)
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isbest=0
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fc2=0.
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do icand=1,ncand
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fc0=candidates0(icand,1)
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if(iwspr.eq.0 .and. nb.lt.0 .and. npct.ne.0 .and. &
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abs(fc0-(nfqso+1.5*baud)).gt.ntol) cycle ! blanker loop only near nfqso
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detmet=candidates0(icand,2)
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! Downconvert and downsample a slice of the spectrum centered on the
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! rough estimate of the candidates frequency.
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! Output array c2 is complex baseband sampled at 12000/ndown Sa/sec.
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! The size of the downsampled c2 array is nfft2=nfft1/ndown
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call timer('dwnsmpl ',0)
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call fst4_downsample(c_bigfft,nfft1,ndown,fc0,sigbw,c2)
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call timer('dwnsmpl ',1)
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call timer('dwnsmpl ',0)
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call fst4_downsample(c_bigfft,nfft1,ndown,fc0,sigbw,c2)
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call timer('dwnsmpl ',1)
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call timer('sync240 ',0)
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call fst4_sync_search(c2,nfft2,hmod,fs2,nss,ntrperiod,nsyncoh,emedelay,sbest,fcbest,isbest)
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call timer('sync240 ',1)
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call timer('sync240 ',0)
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call fst4_sync_search(c2,nfft2,hmod,fs2,nss,ntrperiod,nsyncoh,emedelay,sbest,fcbest,isbest)
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call timer('sync240 ',1)
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fc_synced = fc0 + fcbest
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dt_synced = (isbest-fs2)*dt2 !nominal dt is 1 second so frame starts at sample fs2
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candidates0(icand,3)=fc_synced
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candidates0(icand,4)=isbest
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enddo
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fc_synced = fc0 + fcbest
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dt_synced = (isbest-fs2)*dt2 !nominal dt is 1 second so frame starts at sample fs2
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candidates0(icand,3)=fc_synced
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candidates0(icand,4)=isbest
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enddo
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! remove duplicate candidates
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do icand=1,ncand
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fc=candidates0(icand,3)
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isbest=nint(candidates0(icand,4))
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do ic2=icand+1,ncand
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fc2=candidates0(ic2,3)
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isbest2=nint(candidates0(ic2,4))
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if(fc2.gt.0.0) then
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if(abs(fc2-fc).lt.0.10*baud) then ! same frequency
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if(abs(isbest2-isbest).le.2) then
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candidates0(ic2,3)=-1
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endif
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endif
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endif
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enddo
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enddo
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ic=0
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do icand=1,ncand
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if(candidates0(icand,3).gt.0) then
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ic=ic+1
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candidates0(ic,:)=candidates0(icand,:)
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endif
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enddo
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ncand=ic
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! If FST4 and Single Decode is not checked, then find candidates within
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! 20 Hz of nfqso and put them at the top of the list
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if(iwspr.eq.0 .and. .not.single_decode) then
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nclose=count(abs(candidates0(:,3)-(nfqso+1.5*baud)).le.20)
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k=0
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do i=1,ncand
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if(abs(candidates0(i,3)-(nfqso+1.5*baud)).le.20) then
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k=k+1
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candidates(k,:)=candidates0(i,:)
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endif
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enddo
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do i=1,ncand
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if(abs(candidates0(i,3)-(nfqso+1.5*baud)).gt.20) then
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k=k+1
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candidates(k,:)=candidates0(i,:)
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endif
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enddo
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else
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candidates=candidates0
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endif
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xsnr=0.
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do icand=1,ncand
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sync=candidates(icand,2)
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fc_synced=candidates(icand,3)
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isbest=nint(candidates(icand,4))
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xdt=(isbest-nspsec)/fs2
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if(ntrperiod.eq.15) xdt=(isbest-real(nspsec)/2.0)/fs2
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call timer('dwnsmpl ',0)
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call fst4_downsample(c_bigfft,nfft1,ndown,fc_synced,sigbw,c2)
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call timer('dwnsmpl ',1)
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do ijitter=0,jittermax
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if(ijitter.eq.0) ioffset=0
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if(ijitter.eq.1) ioffset=1
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if(ijitter.eq.2) ioffset=-1
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is0=isbest+ioffset
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iend=is0+160*nss-1
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if( is0.lt.0 .or. iend.gt.(nfft2-1) ) cycle
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cframe=c2(is0:iend)
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bitmetrics=0
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call timer('bitmetrc',0)
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call get_fst4_bitmetrics(cframe,nss,nblock,nhicoh,bitmetrics, &
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s4,nsync_qual,badsync)
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call timer('bitmetrc',1)
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if(badsync) cycle
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do il=1,4
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llrs( 1: 60,il)=bitmetrics( 17: 76, il)
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llrs( 61:120,il)=bitmetrics( 93:152, il)
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llrs(121:180,il)=bitmetrics(169:228, il)
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llrs(181:240,il)=bitmetrics(245:304, il)
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enddo
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apmag=maxval(abs(llrs(:,4)))*1.1
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ntmax=nblock+nappasses(nQSOProgress)
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if(lapcqonly) ntmax=nblock+1
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if(ndepth.eq.1) ntmax=nblock ! no ap for ndepth=1
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apmask=0
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if(iwspr.eq.1) then ! 50-bit msgs, no ap decoding
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nblock=4
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ntmax=nblock
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endif
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do itry=1,ntmax
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if(itry.eq.1) llr=llrs(:,1)
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if(itry.eq.2.and.itry.le.nblock) llr=llrs(:,2)
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if(itry.eq.3.and.itry.le.nblock) llr=llrs(:,3)
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if(itry.eq.4.and.itry.le.nblock) llr=llrs(:,4)
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if(itry.le.nblock) then
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apmask=0
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iaptype=0
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endif
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if(itry.gt.nblock .and. iwspr.eq.0) then ! do ap passes
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llr=llrs(:,nblock) ! Use largest blocksize as the basis for AP passes
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iaptype=naptypes(nQSOProgress,itry-nblock)
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if(lapcqonly) iaptype=1
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if(iaptype.ge.2 .and. apbits(1).gt.1) cycle ! No, or nonstandard, mycall
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if(iaptype.ge.3 .and. apbits(30).gt.1) cycle ! No, or nonstandard, dxcall
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if(iaptype.eq.1) then ! CQ
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apmask=0
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apmask(1:29)=1
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llr(1:29)=apmag*mcq(1:29)
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endif
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if(iaptype.eq.2) then ! MyCall ??? ???
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apmask=0
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apmask(1:29)=1
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llr(1:29)=apmag*apbits(1:29)
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endif
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if(iaptype.eq.3) then ! MyCall DxCall ???
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apmask=0
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apmask(1:58)=1
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llr(1:58)=apmag*apbits(1:58)
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endif
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if(iaptype.eq.4 .or. iaptype.eq.5 .or. iaptype .eq.6) then
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apmask=0
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apmask(1:77)=1
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llr(1:58)=apmag*apbits(1:58)
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if(iaptype.eq.4) llr(59:77)=apmag*mrrr(1:19)
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if(iaptype.eq.5) llr(59:77)=apmag*m73(1:19)
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if(iaptype.eq.6) llr(59:77)=apmag*mrr73(1:19)
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endif
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endif
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dmin=0.0
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nharderrors=-1
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unpk77_success=.false.
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if(iwspr.eq.0) then
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maxosd=2
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Keff=91
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norder=3
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call timer('d240_101',0)
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call decode240_101(llr,Keff,maxosd,norder,apmask,message101, &
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cw,ntype,nharderrors,dmin)
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call timer('d240_101',1)
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if(count(cw.eq.1).eq.0) then
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nharderrors=-nharderrors
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cycle
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endif
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write(c77,'(77i1)') mod(message101(1:77)+rvec,2)
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call unpack77(c77,1,msg,unpk77_success)
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elseif(iwspr.eq.1) then
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! Try decoding with Keff=66
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maxosd=2
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call timer('d240_74 ',0)
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Keff=66
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norder=3
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call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
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ntype,nharderrors,dmin)
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call timer('d240_74 ',1)
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if(nharderrors.lt.0) goto 3465
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if(count(cw.eq.1).eq.0) then
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nharderrors=-nharderrors
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cycle
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endif
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write(c77,'(50i1)') message74(1:50)
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c77(51:77)='000000000000000000000110000'
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call unpack77(c77,1,msg,unpk77_success)
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if(unpk77_success .and. do_k50_decode) then
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! If decode was obtained with Keff=66, save call/grid in fst4w_calls.txt if not there already.
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i1=index(msg,' ')
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i2=i1+index(msg(i1+1:),' ')
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wpart=trim(msg(1:i2))
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! Only save callsigns/grids from type 1 messages
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if(index(wpart,'/').eq.0 .and. index(wpart,'<').eq.0) then
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ifound=0
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do i=1,nwcalls
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if(index(wcalls(i),wpart).ne.0) ifound=1
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enddo
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if(ifound.eq.0) then ! This is a new callsign
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new_callsign=.true.
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if(nwcalls.lt.MAXWCALLS) then
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nwcalls=nwcalls+1
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wcalls(nwcalls)=wpart
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else
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wcalls(1:nwcalls-1)=wcalls(2:nwcalls)
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wcalls(nwcalls)=wpart
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endif
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endif
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do icand=1,ncand
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fc=candidates0(icand,3)
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isbest=nint(candidates0(icand,4))
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do ic2=icand+1,ncand
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fc2=candidates0(ic2,3)
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isbest2=nint(candidates0(ic2,4))
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if(fc2.gt.0.0) then
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if(abs(fc2-fc).lt.0.10*baud) then ! same frequency
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if(abs(isbest2-isbest).le.2) then
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candidates0(ic2,3)=-1
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endif
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endif
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3465 continue
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endif
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enddo
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enddo
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ic=0
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do icand=1,ncand
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if(candidates0(icand,3).gt.0) then
|
||||
ic=ic+1
|
||||
candidates0(ic,:)=candidates0(icand,:)
|
||||
endif
|
||||
enddo
|
||||
ncand=ic
|
||||
|
||||
! If no decode then try Keff=50
|
||||
iaptype=0
|
||||
if( .not. unpk77_success .and. do_k50_decode ) then
|
||||
maxosd=1
|
||||
! If FST4 mode and Single Decode is not checked, then find candidates
|
||||
! within 20 Hz of nfqso and put them at the top of the list
|
||||
if(iwspr.eq.0 .and. .not.single_decode) then
|
||||
nclose=count(abs(candidates0(:,3)-(nfqso+1.5*baud)).le.20)
|
||||
k=0
|
||||
do i=1,ncand
|
||||
if(abs(candidates0(i,3)-(nfqso+1.5*baud)).le.20) then
|
||||
k=k+1
|
||||
candidates(k,:)=candidates0(i,:)
|
||||
endif
|
||||
enddo
|
||||
do i=1,ncand
|
||||
if(abs(candidates0(i,3)-(nfqso+1.5*baud)).gt.20) then
|
||||
k=k+1
|
||||
candidates(k,:)=candidates0(i,:)
|
||||
endif
|
||||
enddo
|
||||
else
|
||||
candidates=candidates0
|
||||
endif
|
||||
|
||||
xsnr=0.
|
||||
do icand=1,ncand
|
||||
sync=candidates(icand,2)
|
||||
fc_synced=candidates(icand,3)
|
||||
isbest=nint(candidates(icand,4))
|
||||
xdt=(isbest-nspsec)/fs2
|
||||
if(ntrperiod.eq.15) xdt=(isbest-real(nspsec)/2.0)/fs2
|
||||
call timer('dwnsmpl ',0)
|
||||
call fst4_downsample(c_bigfft,nfft1,ndown,fc_synced,sigbw,c2)
|
||||
call timer('dwnsmpl ',1)
|
||||
|
||||
do ijitter=0,jittermax
|
||||
if(ijitter.eq.0) ioffset=0
|
||||
if(ijitter.eq.1) ioffset=1
|
||||
if(ijitter.eq.2) ioffset=-1
|
||||
is0=isbest+ioffset
|
||||
iend=is0+160*nss-1
|
||||
if( is0.lt.0 .or. iend.gt.(nfft2-1) ) cycle
|
||||
cframe=c2(is0:iend)
|
||||
bitmetrics=0
|
||||
call timer('bitmetrc',0)
|
||||
call get_fst4_bitmetrics(cframe,nss,nblock,nhicoh,bitmetrics, &
|
||||
s4,nsync_qual,badsync)
|
||||
call timer('bitmetrc',1)
|
||||
if(badsync) cycle
|
||||
|
||||
do il=1,4
|
||||
llrs( 1: 60,il)=bitmetrics( 17: 76, il)
|
||||
llrs( 61:120,il)=bitmetrics( 93:152, il)
|
||||
llrs(121:180,il)=bitmetrics(169:228, il)
|
||||
llrs(181:240,il)=bitmetrics(245:304, il)
|
||||
enddo
|
||||
|
||||
apmag=maxval(abs(llrs(:,4)))*1.1
|
||||
ntmax=nblock+nappasses(nQSOProgress)
|
||||
if(lapcqonly) ntmax=nblock+1
|
||||
if(ndepth.eq.1) ntmax=nblock ! no ap for ndepth=1
|
||||
apmask=0
|
||||
|
||||
if(iwspr.eq.1) then ! 50-bit msgs, no ap decoding
|
||||
nblock=4
|
||||
ntmax=nblock
|
||||
endif
|
||||
|
||||
do itry=1,ntmax
|
||||
if(itry.eq.1) llr=llrs(:,1)
|
||||
if(itry.eq.2.and.itry.le.nblock) llr=llrs(:,2)
|
||||
if(itry.eq.3.and.itry.le.nblock) llr=llrs(:,3)
|
||||
if(itry.eq.4.and.itry.le.nblock) llr=llrs(:,4)
|
||||
if(itry.le.nblock) then
|
||||
apmask=0
|
||||
iaptype=0
|
||||
endif
|
||||
|
||||
if(itry.gt.nblock .and. iwspr.eq.0) then ! do ap passes
|
||||
llr=llrs(:,nblock) ! Use largest blocksize as the basis for AP passes
|
||||
iaptype=naptypes(nQSOProgress,itry-nblock)
|
||||
if(lapcqonly) iaptype=1
|
||||
if(iaptype.ge.2 .and. apbits(1).gt.1) cycle ! No, or nonstandard, mycall
|
||||
if(iaptype.ge.3 .and. apbits(30).gt.1) cycle ! No, or nonstandard, dxcall
|
||||
if(iaptype.eq.1) then ! CQ
|
||||
apmask=0
|
||||
apmask(1:29)=1
|
||||
llr(1:29)=apmag*mcq(1:29)
|
||||
endif
|
||||
|
||||
if(iaptype.eq.2) then ! MyCall ??? ???
|
||||
apmask=0
|
||||
apmask(1:29)=1
|
||||
llr(1:29)=apmag*apbits(1:29)
|
||||
endif
|
||||
|
||||
if(iaptype.eq.3) then ! MyCall DxCall ???
|
||||
apmask=0
|
||||
apmask(1:58)=1
|
||||
llr(1:58)=apmag*apbits(1:58)
|
||||
endif
|
||||
|
||||
if(iaptype.eq.4 .or. iaptype.eq.5 .or. iaptype .eq.6) then
|
||||
apmask=0
|
||||
apmask(1:77)=1
|
||||
llr(1:58)=apmag*apbits(1:58)
|
||||
if(iaptype.eq.4) llr(59:77)=apmag*mrrr(1:19)
|
||||
if(iaptype.eq.5) llr(59:77)=apmag*m73(1:19)
|
||||
if(iaptype.eq.6) llr(59:77)=apmag*mrr73(1:19)
|
||||
endif
|
||||
endif
|
||||
|
||||
dmin=0.0
|
||||
nharderrors=-1
|
||||
unpk77_success=.false.
|
||||
if(iwspr.eq.0) then
|
||||
maxosd=2
|
||||
Keff=91
|
||||
norder=3
|
||||
call timer('d240_101',0)
|
||||
call decode240_101(llr,Keff,maxosd,norder,apmask,message101, &
|
||||
cw,ntype,nharderrors,dmin)
|
||||
call timer('d240_101',1)
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
endif
|
||||
write(c77,'(77i1)') mod(message101(1:77)+rvec,2)
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
elseif(iwspr.eq.1) then
|
||||
! Try decoding with Keff=66
|
||||
maxosd=2
|
||||
call timer('d240_74 ',0)
|
||||
Keff=50
|
||||
norder=4
|
||||
Keff=66
|
||||
norder=3
|
||||
call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
|
||||
ntype,nharderrors,dmin)
|
||||
call timer('d240_74 ',1)
|
||||
if(nharderrors.lt.0) goto 3465
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
|
|
@ -541,89 +523,134 @@ contains
|
|||
write(c77,'(50i1)') message74(1:50)
|
||||
c77(51:77)='000000000000000000000110000'
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
! No CRC in this mode, so only accept the decode if call/grid have been seen before
|
||||
if(unpk77_success) then
|
||||
unpk77_success=.false.
|
||||
do i=1,nwcalls
|
||||
if(index(msg,trim(wcalls(i))).gt.0) then
|
||||
unpk77_success=.true.
|
||||
if(unpk77_success .and. do_k50_decode) then
|
||||
! If decode was obtained with Keff=66, save call/grid in fst4w_calls.txt if not there already.
|
||||
i1=index(msg,' ')
|
||||
i2=i1+index(msg(i1+1:),' ')
|
||||
wpart=trim(msg(1:i2))
|
||||
! Only save callsigns/grids from type 1 messages
|
||||
if(index(wpart,'/').eq.0 .and. index(wpart,'<').eq.0) then
|
||||
ifound=0
|
||||
do i=1,nwcalls
|
||||
if(index(wcalls(i),wpart).ne.0) ifound=1
|
||||
enddo
|
||||
|
||||
if(ifound.eq.0) then ! This is a new callsign
|
||||
new_callsign=.true.
|
||||
if(nwcalls.lt.MAXWCALLS) then
|
||||
nwcalls=nwcalls+1
|
||||
wcalls(nwcalls)=wpart
|
||||
else
|
||||
wcalls(1:nwcalls-1)=wcalls(2:nwcalls)
|
||||
wcalls(nwcalls)=wpart
|
||||
endif
|
||||
endif
|
||||
enddo
|
||||
endif
|
||||
endif
|
||||
3465 continue
|
||||
|
||||
! If no decode then try Keff=50
|
||||
iaptype=0
|
||||
if( .not. unpk77_success .and. do_k50_decode ) then
|
||||
maxosd=1
|
||||
call timer('d240_74 ',0)
|
||||
Keff=50
|
||||
norder=4
|
||||
call decode240_74(llr,Keff,maxosd,norder,apmask,message74,cw, &
|
||||
ntype,nharderrors,dmin)
|
||||
call timer('d240_74 ',1)
|
||||
if(count(cw.eq.1).eq.0) then
|
||||
nharderrors=-nharderrors
|
||||
cycle
|
||||
endif
|
||||
write(c77,'(50i1)') message74(1:50)
|
||||
c77(51:77)='000000000000000000000110000'
|
||||
call unpack77(c77,1,msg,unpk77_success)
|
||||
! No CRC in this mode, so only accept the decode if call/grid have been seen before
|
||||
if(unpk77_success) then
|
||||
unpk77_success=.false.
|
||||
do i=1,nwcalls
|
||||
if(index(msg,trim(wcalls(i))).gt.0) then
|
||||
unpk77_success=.true.
|
||||
endif
|
||||
enddo
|
||||
endif
|
||||
endif
|
||||
|
||||
endif
|
||||
|
||||
endif
|
||||
if(nharderrors .ge.0 .and. unpk77_success) then
|
||||
idupe=0
|
||||
do i=1,ndecodes
|
||||
if(decodes(i).eq.msg) idupe=1
|
||||
enddo
|
||||
if(idupe.eq.1) goto 800
|
||||
ndecodes=ndecodes+1
|
||||
decodes(ndecodes)=msg
|
||||
|
||||
if(nharderrors .ge.0 .and. unpk77_success) then
|
||||
idupe=0
|
||||
do i=1,ndecodes
|
||||
if(decodes(i).eq.msg) idupe=1
|
||||
enddo
|
||||
if(idupe.eq.1) goto 800
|
||||
ndecodes=ndecodes+1
|
||||
decodes(ndecodes)=msg
|
||||
if(iwspr.eq.0) then
|
||||
call get_fst4_tones_from_bits(message101,itone,0)
|
||||
else
|
||||
call get_fst4_tones_from_bits(message74,itone,1)
|
||||
endif
|
||||
inquire(file='plotspec',exist=plotspec_exists)
|
||||
fmid=-999.0
|
||||
call timer('dopsprd ',0)
|
||||
if(plotspec_exists) then
|
||||
call dopspread(itone,iwave,nsps,nmax,ndown,hmod, &
|
||||
isbest,fc_synced,fmid,w50)
|
||||
endif
|
||||
call timer('dopsprd ',1)
|
||||
xsig=0
|
||||
do i=1,NN
|
||||
xsig=xsig+s4(itone(i),i)
|
||||
enddo
|
||||
base=candidates(icand,5)
|
||||
arg=600.0*(xsig/base)-1.0
|
||||
if(arg.gt.0.0) then
|
||||
xsnr=10*log10(arg)-35.5-12.5*log10(nsps/8200.0)
|
||||
if(ntrperiod.eq. 15) xsnr=xsnr+2
|
||||
if(ntrperiod.eq. 30) xsnr=xsnr+1
|
||||
if(ntrperiod.eq. 900) xsnr=xsnr+1
|
||||
if(ntrperiod.eq.1800) xsnr=xsnr+2
|
||||
else
|
||||
xsnr=-99.9
|
||||
endif
|
||||
nsnr=nint(xsnr)
|
||||
qual=0.0
|
||||
fsig=fc_synced - 1.5*baud
|
||||
inquire(file=trim(data_dir)//'/decdata',exist=decdata_exists)
|
||||
if(decdata_exists) then
|
||||
hdec=0
|
||||
where(llrs(:,1).ge.0.0) hdec=1
|
||||
nhp=count(hdec.ne.cw) ! # hard errors wrt N=1 soft symbols
|
||||
hd=sum(ieor(hdec,cw)*abs(llrs(:,1))) ! weighted distance wrt N=1 symbols
|
||||
open(21,file=trim(data_dir)//'/fst4_decodes.dat',status='unknown',position='append')
|
||||
write(21,3021) nutc,icand,itry,nsyncoh,iaptype, &
|
||||
ijitter,npct,ntype,Keff,nsync_qual,nharderrors,dmin,nhp,hd, &
|
||||
sync,xsnr,xdt,fsig,w50,trim(msg)
|
||||
3021 format(i6.6,i4,6i3,3i4,f6.1,i4,f6.1,f9.2,f6.1,f6.2,f7.1,f7.3,1x,a)
|
||||
close(21)
|
||||
endif
|
||||
call this%callback(nutc,smax1,nsnr,xdt,fsig,msg, &
|
||||
iaptype,qual,ntrperiod,lwspr,fmid,w50)
|
||||
if(iwspr.eq.0 .and. nb.lt.0 .and. imode.eq.1) go to 900
|
||||
goto 800
|
||||
endif
|
||||
enddo ! metrics
|
||||
enddo ! istart jitter
|
||||
800 enddo !candidate list
|
||||
enddo ! noise blanker loop
|
||||
|
||||
if(iwspr.eq.0) then
|
||||
call get_fst4_tones_from_bits(message101,itone,0)
|
||||
else
|
||||
call get_fst4_tones_from_bits(message74,itone,1)
|
||||
endif
|
||||
inquire(file='plotspec',exist=plotspec_exists)
|
||||
fmid=-999.0
|
||||
call timer('dopsprd ',0)
|
||||
if(plotspec_exists) then
|
||||
call dopspread(itone,iwave,nsps,nmax,ndown,hmod, &
|
||||
isbest,fc_synced,fmid,w50)
|
||||
endif
|
||||
call timer('dopsprd ',1)
|
||||
xsig=0
|
||||
do i=1,NN
|
||||
xsig=xsig+s4(itone(i),i)
|
||||
enddo
|
||||
base=candidates(icand,5)
|
||||
arg=600.0*(xsig/base)-1.0
|
||||
if(arg.gt.0.0) then
|
||||
xsnr=10*log10(arg)-35.5-12.5*log10(nsps/8200.0)
|
||||
if(ntrperiod.eq. 15) xsnr=xsnr+2
|
||||
if(ntrperiod.eq. 30) xsnr=xsnr+1
|
||||
if(ntrperiod.eq. 900) xsnr=xsnr+1
|
||||
if(ntrperiod.eq.1800) xsnr=xsnr+2
|
||||
else
|
||||
xsnr=-99.9
|
||||
endif
|
||||
nsnr=nint(xsnr)
|
||||
qual=0.0
|
||||
fsig=fc_synced - 1.5*baud
|
||||
inquire(file=trim(data_dir)//'/decdata',exist=decdata_exists)
|
||||
if(decdata_exists) then
|
||||
hdec=0
|
||||
where(llrs(:,1).ge.0.0) hdec=1
|
||||
nhp=count(hdec.ne.cw) ! # hard errors wrt N=1 soft symbols
|
||||
hd=sum(ieor(hdec,cw)*abs(llrs(:,1))) ! weighted distance wrt N=1 symbols
|
||||
open(21,file=trim(data_dir)//'/fst4_decodes.dat',status='unknown',position='append')
|
||||
write(21,3021) nutc,icand,itry,nsyncoh,iaptype, &
|
||||
ijitter,ntype,Keff,nsync_qual,nharderrors,dmin,nhp,hd, &
|
||||
sync,xsnr,xdt,fsig,w50,trim(msg)
|
||||
3021 format(i6.6,i4,5i3,3i4,f6.1,i4,f6.1,f9.2,f6.1,f6.2,f7.1,f7.3,1x,a)
|
||||
close(21)
|
||||
endif
|
||||
call this%callback(nutc,smax1,nsnr,xdt,fsig,msg, &
|
||||
iaptype,qual,ntrperiod,lwspr,fmid,w50)
|
||||
if(iwspr.eq.0 .and. nb.lt.0) go to 900
|
||||
goto 800
|
||||
endif
|
||||
enddo ! metrics
|
||||
enddo ! istart jitter
|
||||
800 enddo !candidate list
|
||||
enddo ! noise blanker loop
|
||||
if(new_callsign .and. do_k50_decode) then ! re-write the fst4w_calls.txt file
|
||||
open(42,file=trim(data_dir)//'/fst4w_calls.txt',status='unknown')
|
||||
do i=1,nwcalls
|
||||
write(42,'(a20)') trim(wcalls(i))
|
||||
enddo
|
||||
close(42)
|
||||
endif
|
||||
|
||||
if(new_callsign .and. do_k50_decode) then ! re-write the fst4w_calls.txt file
|
||||
open(42,file=trim(data_dir)//'/fst4w_calls.txt',status='unknown')
|
||||
do i=1,nwcalls
|
||||
write(42,'(a20)') trim(wcalls(i))
|
||||
enddo
|
||||
close(42)
|
||||
endif
|
||||
enddo ! mode loop
|
||||
|
||||
900 return
|
||||
end subroutine decode
|
||||
|
|
@ -818,8 +845,8 @@ contains
|
|||
do i=ina,inb !Compute CCF of s() and 4 tones
|
||||
s2(i)=s(i-hmod*3) + s(i-hmod) +s(i+hmod) +s(i+hmod*3)
|
||||
enddo
|
||||
npct=30
|
||||
call fst4_baseline(s2,nnw,ina+hmod*3,inb-hmod*3,npct,sbase)
|
||||
npctile=30
|
||||
call fst4_baseline(s2,nnw,ina+hmod*3,inb-hmod*3,npctile,sbase)
|
||||
if(any(sbase(ina:inb).le.0.0)) return
|
||||
s2(ina:inb)=s2(ina:inb)/sbase(ina:inb) !Normalize wrt noise level
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue