In response to the limitations of traditional reconfigurable intelligent surfaces(RIS)in UAV-assisted secure communications,such as insufficient flexibility and inadequate system security,as well as the challenges of low spec-tral efficiency and poor communication efficiency faced by current half-duplex UAV communication systems,a dual-machine cooperative solution involving aerial reconfigurable intelligent surfaces(ARIS)and full-duplex UAV was proposed,aiming at enhancing communication security and efficiency against ground eavesdroppers.An optimization problem was designed to maximize the minimum average achievable security rate by jointly optimizing user commu-nication scheduling,transmission power,the interference power sent by UAV,their flight trajectories,and the phase shifts and trajectories of ARIS.An iterative algorithm based on alternating optimization(AO),semi-definite relax-ation(SDR)techniques,and successive convex approximation(SCA)was proposed to obtain high-quality suboptimal solutions.Simulation results demonstrate the effectiveness of the ARIS and full-duplex UAV combination in enhanc-ing communication quality and security performance,showcasing its superiority in complex security communication environments.
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