196 lines
5.7 KiB
Fortran
196 lines
5.7 KiB
Fortran
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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 jt65
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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(7),sq(7)
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character arg*12,cmnd*100,decoded*22,submode*1,csync*1,f1*15,f2*15
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character*12 outfile
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logical syncok
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nargs=iargc()
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if(nargs.ne.7) then
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print*,'Usage: fer65 submode fspread snr1 snr2 Navg DS iters'
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print*,'Example: fer65 C 3.0 -28 -12 8 1 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,*) navg
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call getarg(6,arg)
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read(arg,*) nds
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call getarg(7,arg)
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read(arg,*) iters
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write(outfile,1001) submode,d,navg,nds
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1001 format(a1,f6.2,'_',i2.2,'_',i1)
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if(outfile(2:2).eq.' ') outfile(2:2)='0'
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if(outfile(3:3).eq.' ') outfile(3:3)='0'
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ndepth=3
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if(navg.gt.1) ndepth=ndepth+16
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if(nds.ne.0) ndepth=ndepth+32
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dfmax=3
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if(submode.eq.'b' .or. submode.eq.'B') dfmax=6
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if(submode.eq.'c' .or. submode.eq.'C') dfmax=11
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ntrials=1000
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naggressive=10
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open(20,file=outfile,status='unknown')
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open(21,file='fer65.21',status='unknown')
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write(20,1000) submode,iters,ntrials,naggressive,d,ndepth,navg,nds
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1000 format(/'JT65',a1,' Iters:',i5,' T:',i6,' Aggr:',i3, &
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' Dop:',f6.2,' Depth:',i2,' Navg:',i3,' DS:',i2)
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write(20,1002)
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1002 format(/' dB nsync ngood nbad sync dsnr ', &
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'DT Freq Nsum Width'/85('-'))
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flush(20)
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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,navg
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1010 format('./jt65sim -n 1 -m ',a1,' -d',f7.2,' -s \\',f5.1,' -f',i3,' >devnull')
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call unlink('000000_????.wav')
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call system(cmnd)
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if(navg.gt.1) then
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do i=navg,2,-1
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j=2*i-1
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write(f1,1011) i
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write(f2,1011) j
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1011 format('000000_',i4.4,'.wav')
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call rename(f1,f2)
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enddo
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endif
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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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nfreq=0
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ndrift=0
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nwidth=0
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cmnd='./jt65 -m A -a 10 -c K1ABC -f 1500 -n 1000 -d 5 -s 000000_????.wav > decoded.txt'
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cmnd(11:11)=submode
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write(cmnd(47:48),'(i2)') ndepth
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call system(cmnd)
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open(13,file='fort.13',status='old',err=20)
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do i=1,navg
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read(13,1012) nutc,isync,nsnr,dt,nfreq,ndrift,nwidth,decoded, &
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nft,nsum,nsmo
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1012 format(i4,i4,i5,f6.2,i5,i4,i3,1x,a22,5x,3i3)
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if(nft.gt.0) exit
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enddo
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close(13)
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syncok=abs(dt).lt.0.2 .and. float(abs(nfreq-1500)).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,nfreq,ndrift,nwidth, &
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nft,nsum,nsmo,csync,decoded(1:16),nft,nsum,nsmo
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1014 format(i4,i4,i5,f6.2,i5,i4,3x,4i3,1x,a1,1x,a16,i2,2i3)
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flush(21)
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if(syncok) then
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nsync=nsync+1
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s(1)=s(1) + isync
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sq(1)=sq(1) + isync*isync
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s(6)=s(6) + nwidth
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sq(6)=sq(6) + nwidth*nwidth
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if(decoded.eq.'K1ABC W9XYZ EN37 ') then
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ngood=ngood+1
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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) + nfreq
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s(5)=s(5) + ndrift
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s(7)=s(7) + nsum
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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) + nfreq*nfreq
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sq(5)=sq(5) + ndrift*ndrift
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sq(7)=sq(7) + nsum*nsum
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else if(decoded.ne.' ') then
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nbad=nbad+1
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print*,'Nbad:',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) nint(snr),iter,isync,nsnr,dt,nfreq,ndrift,nwidth,fsync, &
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fgood,fbad,decoded(1:16),nft,nsum,nsmo
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1020 format(i3,i5,i3,i4,f6.2,i5,i3,i3,2f6.3,f7.4,1x,a16,i2,2i3)
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enddo
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if(nsync.ge.1) then
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xsync=s(1)/nsync
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xwidth=s(6)/nsync
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endif
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esync=0.
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if(nsync.ge.2) then
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esync=sqrt(sq(1)/nsync - xsync**2)
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ewidth=sqrt(sq(6)/nsync - xwidth**2)
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endif
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if(ngood.ge.1) then
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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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xsum=s(7)/ngood
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endif
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if(ngood.ge.2) then
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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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esum=sqrt(sq(7)/ngood - xsum**2)
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endif
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dsnr=xsnr-snr
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dfreq=xfreq-1500.0
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if(ngood.eq.0) then
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dsnr=0.
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dfreq=0.
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endif
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write(20,1100) snr,nsync,ngood,nbad,xsync,esync,dsnr,esnr, &
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xdt,edt,dfreq,efreq,xsum,esum,xwidth,ewidth
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1100 format(f5.1,2i6,i4,2f6.1,f6.1,f5.1,f6.2,f5.2,6f5.1)
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flush(20)
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if(ngood.ge.int(0.99*iters)) exit
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enddo
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999 end program fer65
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