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      Joint Beam Selection and Dwell Time Allocation for Multi-target Tracking in Phased Array Radar System

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          Abstract

          Phased array radar can simultaneously form multiple beams that can scan without inertia allowing for flexible pointing. In this paper, we propose a joint beam and dwell time allocation strategy for multi-target tracking in a phased array radar system to achieve multi-target tracking with less system resources. First, we formulate an optimization problem for minimizing the total dwell time on all targets while guaranteeing to meet a predetermined target-tracking accuracy requirement. The Bayesian Cramer-Rao Lower Bound (BCRLB) is introduced as the tracking performance metric since it provides a lower bound for the error of target state estimate. Second, after proving the optimization problem is nonconvex, we propose a two-step decomposition algorithm which is first to determine the beam pointing and then allocate the beam dwell time to solve it. Finally, we achieve multi-target tracking based on the resource allocation results. Simulation results show that our optimization strategy is effective in saving resources and is favorable for achieving a better tracking performance of worse targets as compared to an operating mode wherein uniform resource allocation occurs.

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          Author and article information

          Journal
          Journal of Radars
          Chinese Academy of Sciences
          01 December 2017
          : 6
          : 6
          : 602-610
          Affiliations
          [1 ] (School of Electronics Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China)
          Article
          eeca174ae4f24fecbbabe2fc04ea609d
          10.12000/JR17045

          This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

          Categories
          Technology (General)
          T1-995

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