Literature Review on Drones Used in the Surveillance Field

The current study reviews the available literature about UAVs employed in the surveillance field for indoor and outdoor spaces. At first, we differentiated between HTA and LTA. After a first analysis, we compared the two categories, and we proposed active solutions. In our opinion, it would be possible to put them into practice by implementing a system which would operate both copter drones and blimps. These, in fact, present advantages and disadvantages which overcome one another, giving the possibility of such dual systems. This study is developed inside a broader analysis on how to provide the right level of security of an automated port that would rely on an autonomous security system.