基于协方差控制的相控阵雷达资源管理算法  

Resource Management Algorithm Based on Covariance Control for Phased Array Radars

作　　者：卢建斌[1] 胡卫东[1] 郁文贤[1] 

机构地区：[1]国防科技大学电子科学与工程学院ATR重点实验室,湖南长沙410073

出　　处：《电子学报》2007年第3期402-408,共7页Acta Electronica Sinica

基　　金：国家高技术研究发展计划(863计划)课题(No.2003AA134030)

摘　　要：基于协方差控制策略研究了相控阵雷达搜索及跟踪方式下的资源管理问题.建立了相控阵雷达资源分配的最优化模型,该模型可以依据传感器对所跟踪目标设定的期望协方差矩阵与当前目标实际协方差阵之间的偏差,来确定下一时刻传感器的工作模式.分别提出了基于协方差偏差均值最小准则和最大协方差偏差最小准则两类资源管理算法.所提出的资源管理算法可以依据最优资源分配准则来控制传感器搜索及跟踪模式,使得对所有目标的跟踪维持在最佳状态.进一步,选取绝对值求迹度量和2范数度量进行仿真分析,结果表明基于协方差控制的资源管理算法可以在维持目标期望跟踪状态的条件下,有效分配雷达资源.最后讨论了期望协方差矩阵选取的原则.The problem of resource management in search and track mode for phased array radars is considered based on covariance control. An optimal model of resource allocation is presented, which selects sensor working mode based on the difference between the desired covariance matrix and that of the actual covariance of each target. Two kinds of resource management algorithms, the minimum mean deviation criterion and the minimax deviation criterion, are proposed, respectively. The proposed algorithms can control sensor working mode between search and track with optimal resources allocation, and keep all targets in the desired states. Simulation results with absolute trace and 2-norm matrix metrics show that the algorithms based on covariance control can effectively allocate sensor resources with the desired tracking state maintained. Finally, the selection of the desired covariance matrix is discussed.

关 键 词：相控阵雷达 资源管理 协方差控制 卡尔曼滤波 

分 类 号：TN95[电子电信—信号与信息处理]