mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2025-10-31 13:10:19 -04:00
2c17544f3f
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/WSJT/trunk@1 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
42 lines
848 B
Fortran
42 lines
848 B
Fortran
subroutine ping(s,nz,dtbuf,slim,wmin,pingdat,nping)
|
|
|
|
C Detect pings and make note of their start time, duration, and peak strength.
|
|
|
|
real*4 s(nz)
|
|
real*4 pingdat(3,100)
|
|
logical inside
|
|
|
|
nping=0
|
|
peak=0.
|
|
inside=.false.
|
|
c### sdown=slim-1.0
|
|
snrlim=10.0**(0.1*slim) - 1.0
|
|
sdown=10.0*log10(0.25*snrlim+1.0)
|
|
|
|
do i=2,nz
|
|
if(s(i).ge.slim .and. .not.inside) then
|
|
i0=i
|
|
tstart=i0*dtbuf
|
|
inside=.true.
|
|
peak=0.
|
|
endif
|
|
if(inside .and. s(i).gt.peak) then
|
|
peak=s(i)
|
|
endif
|
|
if(inside .and. (s(i).lt.sdown .or. i.eq.nz)) then
|
|
if(i.gt.i0) then
|
|
if(dtbuf*(i-i0).ge.wmin) then
|
|
if(nping.le.99) nping=nping+1
|
|
pingdat(1,nping)=tstart
|
|
pingdat(2,nping)=dtbuf*(i-i0)
|
|
pingdat(3,nping)=peak
|
|
endif
|
|
inside=.false.
|
|
peak=0.
|
|
endif
|
|
endif
|
|
enddo
|
|
|
|
return
|
|
end
|