A Power Allocation Method for Three-dimensional Maneuvering Tracking of Colocated MIMO Radar Based on Air Defense QoS Model

Aiming at the problem of low power resource utilization for multi-function radar in air defense operation, this paper proposes a power allocation method for three-dimensional maneuvering tracking based on the quality of service (QoS) model, which achieves the improvement in multiple target tracking (MTT) performance with differentiated standards. The target three-dimensional maneuvering model is established as an adaptive current statistical (ACS) model, and the adaptive adjustment is achieved by associating the acceleration covariance with the estimation error covariance matrix. On this basis, the Bayesian Cram佴r-Rao lower bound (BCRLB) under three-dimensional tracking is derived and utilized as a criterion of tracking error. Subsequently, a closed-loop power optimization allocation mechanism under the air defense QoS model is established by constructing a functional relationship between the target threat degree and the expected tracking accuracy. In the last, it is proved that the formulated power optimal allocation model is a convex optimization problem, which is further transformed into a semi-definite programming (SDP) problem for solving. Simulated results show that the proposed method can significantly improve the global tracking performance compared with the traditional power allocation methods. © 2024 China Ordnance Industry Corporation. All rights reserved.