mirror of
https://github.com/saitohirga/WSJT-X.git
synced 2024-11-16 09:01:59 -05:00
82 lines
2.1 KiB
Fortran
82 lines
2.1 KiB
Fortran
|
subroutine hopping(nyear,month,nday,uth,mygrid,nduration,npctx,isun, &
|
||
|
|
iband,ntxnext)
|
||
|
|
|
||
|
|
! Determine Rx or Tx in coordinated hopping mode.
|
||
|
|
|
||
|
|
character*6 mygrid
|
||
|
|
integer tx(10,6) !T/R array for 2 hours: 10 bands, 6 time slots
|
||
|
|
real r(6) !Random numbers
|
||
|
|
integer ii(1)
|
||
|
|
data n2hr0/-999/
|
||
|
|
save n2hr0,tx
|
||
|
|
|
||
|
|
call grayline(nyear,month,nday,uth,mygrid,nduration,isun)
|
||
|
|
|
||
|
|
ns0=uth*3600.0
|
||
|
|
pctx=npctx
|
||
|
|
nrx=0
|
||
|
|
ntxnext=0
|
||
|
|
nsec=(ns0+10)/120 !Round up to start of next 2-min slot
|
||
|
|
nsec=nsec*120
|
||
|
|
n2hr=nsec/7200 !2-hour slot number
|
||
|
|
|
||
|
|
if(n2hr.ne.n2hr0) then
|
||
|
|
! Compute a new Rx/Tx pattern for this 2-hour interval
|
||
|
|
n2hr0=n2hr !Mark this one as done
|
||
|
|
tx=0 !Clear the tx array
|
||
|
|
do j=1,10 !Loop over all 10 bands
|
||
|
|
call random_number(r)
|
||
|
|
do i=1,6,2 !Select one each of 3 pairs of the
|
||
|
|
if(r(i).gt.r(i+1)) then ! 6 slots for Tx
|
||
|
|
tx(j,i)=1
|
||
|
|
r(i+1)=0.
|
||
|
|
else
|
||
|
|
tx(j,i+1)=1
|
||
|
|
r(i)=0.
|
||
|
|
endif
|
||
|
|
enddo
|
||
|
|
|
||
|
|
if(pctx.lt.50.0) then !If pctx < 50, we may kill one Tx slot
|
||
|
|
ii=maxloc(r)
|
||
|
|
i=ii(1)
|
||
|
|
call random_number(rr)
|
||
|
|
rrtest=(50.0-pctx)/16.667
|
||
|
|
if(rr.lt.rrtest) then
|
||
|
|
tx(j,i)=0
|
||
|
|
r(i)=0.
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
|
||
|
|
if(pctx.lt.33.333) then !If pctx < 33, may kill another
|
||
|
|
ii=maxloc(r)
|
||
|
|
i=ii(1)
|
||
|
|
call random_number(rr)
|
||
|
|
rrtest=(33.333-pctx)/16.667
|
||
|
|
if(rr.lt.rrtest) then
|
||
|
|
tx(j,i)=0
|
||
|
|
r(i)=0.
|
||
|
|
endif
|
||
|
|
endif
|
||
|
|
enddo
|
||
|
|
|
||
|
|
! We now have 1 to 3 Tx periods per band in the 2-hour interval.
|
||
|
|
endif
|
||
|
|
|
||
|
|
iband=mod(nsec/120,10) + 1
|
||
|
|
iseq=mod(nsec/1200,6) + 1
|
||
|
|
if(iseq.lt.1) iseq=1
|
||
|
|
if(tx(iband,iseq).eq.1) then
|
||
|
|
ntxnext=1
|
||
|
|
else
|
||
|
|
nrx=1
|
||
|
|
endif
|
||
|
|
iband=iband-1
|
||
|
|
|
||
|
|
! write(*,3000) iband,iseq,nrx,ntxnext
|
||
|
|
!3000 format('Fortran iband, iseq,nrx,ntxnext:',4i5)
|
||
|
|
! write(*,3001) int(tx)
|
||
|
|
!3001 format(10i2)
|
||
|
|
|
||
|
|
return
|
||
|
|
end subroutine hopping
|