WSJT-X/lib/allsim.f90

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1.9 KiB
Fortran
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program allsim
! Generate simulated data for WSJT-X slow modes: JT4, JT9, JT65, QRA64,
! and WSPR. Also unmodulated carrier and 20 WPM CW.
use wavhdr
use packjt
parameter (NMAX=60*12000)
type(hdr) h
integer*2 iwave(NMAX) !Generated waveform (no noise)
integer itone(206) !Channel symbols (values 0-8)
integer icw(250)
real*4 dat(NMAX)
character message*22,msgsent*22,arg*8
nargs=iargc()
if(nargs.ne.1) then
print*,'Usage: allsim <snr>'
go to 999
endif
call getarg(1,arg)
read(arg,*) snrdb !S/N in dB (2500 hz reference BW)
message='CQ KA2ABC FN20'
rmsdb=25.
rms=10.0**(0.05*rmsdb)
sig=10.0**(0.05*snrdb)
npts=NMAX
call init_random_seed() !Seed Fortran RANDOM_NUMBER generator
call sgran() !Seed C rand generator (used in gran)
h=default_header(12000,npts)
open(10,file='000000_0000.wav',access='stream',status='unknown')
do i=1,npts !Generate gaussian noise
dat(i)=gran()
enddo
itone=0
call addit(itone,12000,85,6912,400,sig,dat) !Unmodulated carrier
call morse('CQ CQ DE KA2ABC KA2ABC',icw,ncw)
! print*,ncw
! write(*,3001) icw(1:ncw)
!3001 format(50i1)
call addcw(icw,ncw,600,sig,dat) !CW
call genwspr(message,msgsent,itone)
call addit(itone,12000,86,8192,800,sig,dat) !WSPR (only 59 s of data)
call gen9(message,0,msgsent,itone,itype)
call addit(itone,12000,85,6912,1000,sig,dat) !JT9
call gen4(message,0,msgsent,itone,itype)
call addit(itone,11025,206,2520,1200,sig,dat) !JT4
call genqra64(message,0,msgsent,itone,itype)
call addit(itone,12000,84,6912,1400,sig,dat) !QRA64
call gen65(message,0,msgsent,itone,itype)
call addit(itone,11025,126,4096,1600,sig,dat) !JT65
iwave(1:npts)=nint(rms*dat(1:npts))
write(10) h,iwave(1:npts)
close(10)
999 end program allsim