A joint beam and dwell time allocation strategy for multiple target tracking based on phase array radar system

In this paper, we will investigate a joint beam and dwell time allocation strategy for multiple targets tracking based on the phased array radar system. We achieve the resources allocation by formulating and solving an optimization problem, which is to minimize the total dwell time on all targets with the tracking accuracy of each target satisfying a pre-designed requirement. Since the Bayesian Cramer-Rao lower bound (BCRLB) provides a lower bound on the error of any unbiased estimator, it is employed as the metric for the tracking performance. The optimization problem is proved nonconvex and we solve it through a two-step decomposition algorithm. Simulation results show that the optimization strategy we propose is effective in resource saving and favourable for achieving a better tracking performance of worse targets compared to the operating mode with uniform resources allocation.