2nd round of sync ac selection

mlat/server/tracker.py

@@ -217,16 +217,35 @@ def update_interest(self, receiver):
  ntotal = {}
  new_sync_set = set()
  total_rate = 0
+
+ # select SYNC aircraft round1
  for rp, r1, ac, rate in ratepair_list:
  if ac in new_sync_set:
  continue # already added
 
- if len(new_sync_set) >= config.MAX_SYNC_AC:
+ if len(new_sync_set) >= config.MAX_SYNC_AC or total_rate > 3 * config.MAX_SYNC_AC:
  break
 
  if ntotal.get(r1, 0.0) < 1.0:
  # use this aircraft for sync
  new_sync_set.add(ac)
+ total_rate += rate
+ # update rate-product totals for all receivers that see this aircraft
+ for rp2, r2, ac2, rate in ac_to_ratepair_map[ac]:
+ ntotal[r2] = ntotal.get(r2, 0.0) + rp2
+
+ # select SYNC aircraft round2 < 2.0 instead of < 1.0 ntotal
+ for rp, r1, ac, rate in ratepair_list:
+ if ac in new_sync_set:
+ continue # already added
+
+ if len(new_sync_set) >= config.MAX_SYNC_AC or total_rate > 3 * config.MAX_SYNC_AC:
+ break
+
+ if ntotal.get(r1, 0.0) < 2.0:
+ # use this aircraft for sync
+ new_sync_set.add(ac)
+ total_rate += rate
  # update rate-product totals for all receivers that see this aircraft
  for rp2, r2, ac2, rate in ac_to_ratepair_map[ac]:
  ntotal[r2] = ntotal.get(r2, 0.0) + rp2