Abstract
The use of unmanned air vehicles (UAVs) as “flying base stations” is gaining significant traction in the wireless communication society. Such UAV-based wireless networks could be quickly deployed to increase the range of a network or to replace a damaged infrastructure in emergency situations. One critical aspect of UAV networks is to determine the optimal location for each UAV, which can be challenging if the location of the ground users is unknown. In this paper we propose an algorithm to have the UAV localize a ground user, based on switching between multiple (moderately) directional antennas. The algorithm is validated experimentally, and we show that with our algorithm, the UAV is able to quickly move towards the ground user in all experiments. We then use the same algorithm to place the UAV between two ground users, by maximizing the weakest link. Again, experiments show that the UAV is able to move towards the “sweet spot” between the two ground users.
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