目标跟踪时的雷达辐射能量控制方法研究

发布时间：2018-06-17 09:00

本文选题：目标跟踪 + 辐射功率　；参考：《江苏科技大学》2017年硕士论文

【摘要】：面对日益复杂的战场环境,传统雷达无法适应目标环境的变化。相控阵雷达具有多任务、多功能特性,其利用天线波束灵活改变的特点,使得雷达每秒可以产生几百个波束。在保证目标跟踪性能的前提下,对相控阵雷达资源合理地管理,能够降低雷达的辐射能量,减少雷达的损耗,从而进一步地提高雷达工作性能。本文围绕相控阵雷达目标跟踪时的辐射功率控制开展研究,主要工作如下:1.通过分析相控阵雷达辐射功率与射频隐身性能的关系,基于交互多模型算法(Interaction multiple model,IMM)提出了目标跟踪时的分级功率控制方法。采用分级的辐射功率对相控阵雷达工作参数进行控制,基于信噪比、测量噪声协方差的克拉美罗下界和辐射功率三者之间的关系,自适应设计了下一时刻的辐射功率,提高了雷达系统的射频隐身性能。2.研究了多目标跟踪时的功率自适应控制方法。在杂波环境下,基于交互多模型数据关联算法(Interacting multiple model probability data association,IMMPDA),依据目标特征对雷达辐射功率进行自适应设计,利用预测目标的距离和目标的雷达截面积(Radar Cross section,RCS)的值设计下一时刻的辐射功率。仿真分析验证了文中所提算法的有效性,算法不仅具有较好的跟踪性能,而且降低了雷达的辐射能量。3.针对多目标跟踪时雷达资源不足的问题,在IMM跟踪算法的基础上,提出了一种多雷达对多目标跟踪时的分配方法。根据目标优先级的不同和目标距离的远近,在满足一定跟踪精度的情况下,完成了多部雷达跟踪任务的分配,同时,对于位于同一波束内的目标,采用联合概率数据互联算法(Joint Probabilistic Data Association,JPDA)进行跟踪。仿真结果表明算法可以将雷达资源进行合理地分配。
[Abstract]:In the face of increasingly complex battlefield environment, traditional radar can not adapt to the change of target environment. Phased array radar has the characteristics of multitask and multi-function. It makes use of the flexible change of antenna beam to make radar produce hundreds of beams per second. On the premise of ensuring the target tracking performance, the reasonable management of phased array radar resources can reduce the radar radiation energy, reduce radar loss, and further improve the performance of radar. This paper focuses on the radiation power control of phased array radar target tracking, the main work is as follows: 1. By analyzing the relationship between radiation power of phased array radar and radio frequency stealth performance, a hierarchical power control method for target tracking is proposed based on interaction multiple model. The working parameters of phased array radar are controlled by hierarchical radiation power. Based on the relation of signal-to-noise ratio (SNR), Clamero lower bound of noise covariance measurement and radiation power, the radiation power at the next moment is designed adaptively. The radio frequency stealthy performance of radar system is improved. The power adaptive control method for multi-target tracking is studied. In the clutter environment, the interacting multiple model probability data association algorithm is used to design the radar radiation power adaptively according to the target characteristics, based on the interactive multi-model data association algorithm. The radiation power at the next moment is designed by using the values of the range of the target and the radar cross section of the target. Simulation results verify the effectiveness of the proposed algorithm, which not only has good tracking performance, but also reduces the radiation energy of radar. Aiming at the shortage of radar resources in multi-target tracking, this paper proposes an allocation method for multi-target tracking based on imm tracking algorithm. According to the different priority of the target and the distance of the target, the assignment of multiple radar tracking tasks is completed under certain tracking precision. At the same time, for the target in the same beam, A joint probabilistic data association algorithm named Joint probabilistic data Association JPDAA is used for tracking. Simulation results show that the algorithm can allocate radar resources reasonably.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN958

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