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Simple driver for end-to-end JT65 simulations.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6530 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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Joe Taylor
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148
lib/fer65.f90
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148
lib/fer65.f90
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program fer65
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! End-to-end simulator for testing JT65.
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! Options
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! jt65sim jt65sim
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!----------------------------------------------------------------
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! -a aggressive
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! -d Doppler spread -d depth
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! -f Number of files -f freq
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! -m (sub)mode -m (sub)mode
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! -n number of generated sigs -n ntrials
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! -t Time offset (s) -r robust sync
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! -p Do not seed random #s -c mycall
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! -x hiscall
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! -g hisgrid
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! -X hinted-decode flags
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! -s S/N in 2500 Hz -s single-decode mode
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implicit real*8 (a-h,o-z)
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real*8 s(5),sq(5)
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character arg*12,cmnd*100,decoded*22,submode*1,csync*1
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logical syncok
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nargs=iargc()
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if(nargs.ne.5) then
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print*,'Usage: fer65 submode fspread snr1 snr2 iters'
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print*,'Example: fer65 C 3.0 -28 -12 1000'
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go to 999
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endif
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call getarg(1,submode)
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call getarg(2,arg)
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read(arg,*) d
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call getarg(3,arg)
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read(arg,*) snr1
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call getarg(4,arg)
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read(arg,*) snr2
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call getarg(5,arg)
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read(arg,*) iters
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dfmax=min(d,0.5*2.69)
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if(submode.eq.'b' .or. submode.eq.'B') dfmax=min(d,2.69)
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if(submode.eq.'c' .or. submode.eq.'C') dfmax=min(d,2.0*2.69)
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if(dfmax.lt.0.5*2.69) dfmax=0.5*2.69
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ntrials=1000
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naggressive=10
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open(20,file='fer65.20',status='unknown')
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open(21,file='fer65.21',status='unknown')
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write(20,1000) iters,ntrials,naggressive,d
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1000 format('Iters:',i6,' T:',i7,' Aggressive:',i3,' Doppler:',f6.1)
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write(20,1002)
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1002 format(' dB nsync ngood nbad sync snr ', &
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'DT Freq Drift'/77('-'))
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do isnr=0,20
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snr=snr1+isnr
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if(snr.gt.snr2) exit
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nsync=0
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ngood=0
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nbad=0
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s=0.
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sq=0.
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do iter=1,iters
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write(cmnd,1010) submode,d,snr
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1010 format('./jt65sim -n 1 -m ',a1,' -d',f6.1,' -s \\',f5.1,' >devnull')
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call unlink('000000_0001.wav')
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! print*,cmnd
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call system(cmnd)
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call unlink('decoded.txt')
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call unlink('fort.13')
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isync=0
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nsnr=0
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dt=0.
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freq=0.
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ndrift=0
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cmnd='./jt65 -m A -a 10 -f 1500 -n 1000 -d 3 -s -X 32 000000_0001.wav > decoded.txt'
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cmnd(11:11)=submode
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! print*,cmnd
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call system(cmnd)
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open(13,file='fort.13',status='old',err=20)
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read(13,1012) nutc,isync,nsnr,dt,freq,ndrift,decoded,nft,nsum,nsmo
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1012 format(i4,i4,i5,f6.2,f8.0,i4,3x,a22,5x,3i3)
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close(13)
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syncok=abs(dt).lt.0.2 .and. abs(freq-1500.0).lt.dfmax
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csync=' '
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if(syncok) csync='*'
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write(21,1014) nutc,isync,nsnr,dt,freq,ndrift,nft,nsum,nsmo,csync, &
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decoded(1:16)
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1014 format(i4,i4,i5,f6.2,f8.0,i4,3x,3i3,1x,a1,1x,a16)
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if(syncok) then
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nsync=nsync+1
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if(decoded.eq.'K1ABC W9XYZ EN37 ') then
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ngood=ngood+1
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s(1)=s(1) + isync
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s(2)=s(2) + nsnr
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s(3)=s(3) + dt
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s(4)=s(4) + freq
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s(5)=s(5) + ndrift
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sq(1)=sq(1) + isync*isync
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sq(2)=sq(2) + nsnr*nsnr
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sq(3)=sq(3) + dt*dt
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sq(4)=sq(4) + freq*freq
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sq(5)=sq(5) + ndrift*ndrift
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else if(decoded.ne.' ') then
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nbad=nbad+1
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print*,nbad,decoded
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endif
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endif
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20 continue
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fsync=float(nsync)/iter
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fgood=float(ngood)/iter
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fbad=float(nbad)/iter
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write(*,1020) iter,isync,nsnr,dt,int(freq),ndrift,fsync,fgood,fbad, &
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decoded(1:16)
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1020 format(i8,2i4,f7.2,i6,i4,2f7.3,f10.6,1x,a16)
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enddo
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if(ngood.ge.1) then
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xsync=s(1)/ngood
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xsnr=s(2)/ngood
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xdt=s(3)/ngood
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xfreq=s(4)/ngood
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xdrift=s(5)/ngood
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endif
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if(ngood.ge.2) then
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esync=sqrt(sq(1)/ngood - xsync**2)
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esnr=sqrt(sq(2)/ngood - xsnr**2)
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edt=sqrt(sq(3)/ngood - xdt**2)
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efreq=sqrt(sq(4)/ngood - xfreq**2)
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edrift=sqrt(sq(5)/ngood - xdrift**2)
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endif
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dsnr=xsnr-snr
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write(20,1100) snr,nsync,ngood,nbad,xsync,esync,dsnr,esnr, &
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xdt,edt,xfreq,efreq,xdrift,edrift
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1100 format(f5.1,2i6i4,2f6.1,f6.1,f5.1,f6.2,f5.2,f7.1,3f5.1)
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flush(20)
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enddo
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999 end program fer65
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