Optimal Beampattern Design for Resource-Aware Multitarget Tracking in Netted Colocated MIMO Radar Systems

• Published in: International Conference on Control, Automation and Information Sciences (Online) pp. 199 - 204
• Main Authors: Sun, Hao, Li, Ming, Zuo, Lei, Lu, Xiaofei, Wang, Pengfei
• Format: Conference Proceeding
• Language: English
• Published: IEEE 14.10.2021
• Subjects: beampattern design; Colocated MIMO radar; Correlation; Measurement; Numerical simulation; power allocation; Radar; Radar tracking; Simulation; Target tracking
• ISSN: 2475-7896
• DOI: 10.1109/ICCAIS52680.2021.9624528

Colocated multiple-input multi-output (C-MIMO) radar systems can form a desirable transmit beampattern by designing a covariance matrix of the probing signal vector. By employing multiple C-MIMO radar nodes, a netted C-MIMO radar system can be more flexible for multitarget tracking by combining beampattern design and resource allocation. In this paper, a joint beampattern design and power allocation (JBDPA) strategy is proposed to track multiple targets in a netted C-MIMO radar system. The key mechanism is to jointly optimize the correlation matrix and the transmit power of each C-MIMO radar to maximize the tracking performance. The predicted conditional Cramér-Rao lower bound considering beampattern is derived as the optimization criterion. Then, the JBDPA strategy is formulated as an optimization problem subject to a limited power budget. We prove that the problem is convex and solve it by semidefinite programming. Finally, numerical simulations are provided to demonstrate the advantage of our JBDPA strategy for multitarget tracking.