WSJT-X/lib/makepings.f90
Joe Taylor eecf44782c Starting to build JTMSK short messages into WSJT-X. Beware: this will NOT
build correctly.


git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@6413 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
2016-01-21 17:53:34 +00:00

28 lines
478 B
Fortran

subroutine makepings(pings,npts,width,sig)
real pings(npts)
real*8 t
real t0(14)
iping0=-999
dt=1.0/12000.0
do i=1,14
t0(i)=i !Make pings at t=1, 2, ... 14 s.
enddo
w=width
amp=sig
do i=1,npts
iping=min(max(1,i/12000),14)
t=(i*dt-t0(iping))/w
if(t.lt.0.d0 .and. t.lt.10.0) then
fac=0.
else
fac=2.718*t*dexp(-t)
endif
pings(i)=fac*amp
enddo
return
end subroutine makepings