Abstract
Unmanned Aerial Vehicles (UAVs) have several applications in civil and military domains. The high data rate connectivity required by UAVs makes the use of Free Space Optical (FSO) communications very suitable. In this paper, we consider a three-layer optical UAV network architecture allowing the real-time delivery of collected data. The UAV network is exposed to several types of attacks such as replay attacks, black hole attacks, jamming attacks, etc. In this work, we are interested to a specific class of attacks which vises to perform an intentional interference with signals transmitted between two UAVs on an FSO link, which is the jamming attack. This attack can be seen as a form of denial of service attacks since it prevents the transmitter and the receiver to properly communicate through the FSO link and to use the network resources. In this paper, we present some jamming attack scenarios that can occur in an optical UAV network, then we present a countermeasure approach allowing to recover the transmitted signals in the presence of a jamming attack.
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