When UAVs meet ISAC: real-time trajectory design for secure communications

Wu, Jun, Yuan, Weijie and Hanzo, Lajos (2023) When UAVs meet ISAC: real-time trajectory design for secure communications. IEEE Transactions on Vehicular Technology. (In Press)

Record type: Article

Abstract

The real-time unmanned aerial vehicle (UAV) trajectory design of secure integrated sensing and communication (ISAC) is optimized. In particular, the UAV serves both as a downlink transmitter and a radar receiver. The legitimate user (Bob) roams on ground through a series of unknown locations, while the eavesdropper moves following a fixed known trajectory. To maximize the real-time secrecy rate, we propose an extended Kalman filtering (EKF)-based method for tracking and predicting Bob’s location at the UAV based on the delay measurements extracted from the sensing echoes. We then formulate a non-convex real-time trajectory design problem and develop an efficient iterative algorithm for finding a near optimal solution. Our numerical results demonstrate that the proposed algorithm is capable of accurately tracking Bob and strikes a compelling legitimate vs. leakage rate trade-off.

Text

VT-2023-01425 - Accepted Manuscript

Available under License University of Southampton Accepted Manuscript Licence.

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