Wireless secure communication involving UAV: an overview of physical layer security

Abstract

Unmanned aerial vehicle (UAV) is a flight device with power and energy based on computer program control, which has the characteristics of small size, light weight, high maneuverability and low cost. With its characteristics, UAV can play an important role in military and civil fields. However, due to the broadcast nature of wireless communication and inherent air-to-ground line-of-sight channel, UAV wireless communication system is more vulnerable to security threats. On the basis of traditional encryption technology, the secrecy capacity of the UAV communication system can be improved by introducing physical layer security. This article aims to study the security of the physical layer in the UAV communication system, and summarizes the latest research results on the safety communication involving UAVs on the physical layer, such as trajectory optimization, power allocation, user scheduling and cooperative UAVs. Further, some potential research directions and challenges in physical layer security of UAV system are discussed.

Deep learning-based visual navigation control method for autonomous trajectory of UAVs

“…So, the visual navigation needs to select a suitable reference as the reference object, and it can only obtain information on the relative motion state of two objects [9]. Visual navigation has gained more and more attention because the use of computer vision systems can obtain rich environmental information and has the advantages of strong environmental adaptability, small size, lightweight, good anti-interference, complete functions, complete information, as well as making the vehicle more autonomous [10][11][12].…”

“…Structurally, the rotor of the UAV is fixed to a plane, and the vehicle is an inactive control since it has six spatial degrees of freedom, four of which are controllable basic maneuvers. The system assumes the constraints of the UAV flight are: navigation control process with equation (11). It is also necessary to mark the position of fixed static obstacles, i.e., the position of buildings.…”