The best replacement for uav is manned aircraft.

The best alternatives to uav are rated as following:
★★★★★  manned aircraft
★★★★  drone
★★★  pilots
★★★  uav
★★  rpv
★★  rpa
★  uas
★  manned
★  fpv
  field computer
  counter uav
  dji

Your alternative for uav is not listed? Suggest!
Speaking about uav, one probably shouldn't forget about flir.

Other search terms related to uav and their ratings are:
★★★★★ flir
You have in mind a companion for uav and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of uav in all years. Click on graph for more.
uav
manned aircraft
drone