Joint Online Route Planning and Power Allocation for Multitarget Tracking in Airborne Radar Systems
Xiujuan Lu, Lingjiang Kong, Jun Sun, Ye Yuan · 2020
Reasonable route planning and power allocation strategy for the airborne radar systems can sufficiently utilize the limited power and improve the multi-target tracking (MTT) performance. However, in the existing strategies, the route planning and power allocation are usually considered separately and the practical online requirements of route planning have not been addressed. In view of it, we propose a joint online route planning and power allocation (JORPPA) scheme for the task of the MTT in the airborne radar systems in this paper. The posterior Cramér-Rao lower bound (PCRLB) for the moving airborne system is derived and utilized as a constituent of the MTT performance metric. Then, the JORPPA algorithm is modeled as an optimization problem by using a scaled accuracy-based utility function as the objective function. The formulated problem is non-convex. We then propose a partition-based approach to solve it effectively. Numerical results verify the effectiveness of the proposed solution for MTT.