Joint target assignment and power allocation in the netted C-MIMO radar when tracking multi-targets in the presence of self-defense blanket jamming

Abstract

The netted radar system (NRS) has been proved to possess unique advantages in anti-jamming and improving target tracking performance. Effective resource management can greatly ensure the combat capability of the NRS. In this paper, based on the netted collocated multiple input multiple output (C-MIMO) radar, an effective joint target assignment and power allocation (JTAPA) strategy for tracking multi-targets under self-defense blanket jamming is proposed. An architecture based on the distributed fusion is used in the radar network to estimate target state parameters. By deriving the predicted conditional Cramer-Rao lower bound (PC-CRLB) based on the obtained state estimation information, the objective function is formulated. To maximize the worst case tracking accuracy, the proposed JTAPA strategy implements an online target assignment and power allocation of all active nodes, subject to some resource constraints. Since the formulated JTAPA is non-convex, we propose an efficient two-step solution strategy. In terms of the simulation results, the proposed algorithm can effectively improve tracking performance in the worst case.

Keywords

• Netted radar system
• MIMO
• Target assignment
• Power allocation
• Multi-targets tracking
• Self-defense blanket jamming