ISAC From The Sky: Net-Zero Energy Uav Trajectory Design

Unmanned aerial vehicle (UAV) can work as a portable base station providing not only the communication service to ground users, but also the sensing functionality to localize targets of interests. In this paper, we consider a scenario with one rotary-wing UAV to transmit signals for a communication user and receive echoes for a target estimation. We propose a multi-stage trajectory design to jointly improve both the communication and sensing (C&S) performances. We formulate the trajectory design problem into a weighted optimization problem and propose an iterative algorithm to solve it. Numerical results show the performance trade-off between C&S.