相控阵雷达资源调度研究及干扰效能评估

发布时间：2018-05-25 22:23

本文选题：相控阵雷达仿真 + 相控阵雷达资源调度　；参考：《电子科技大学》2014年硕士论文

【摘要】：相控阵雷达作为一种日趋成熟的雷达体制,已被广泛地应用于军事与民用的各个领域,针对相控阵雷达的电子对抗因此成为研究的热门方向。然而鉴于相控阵雷达系统的复杂与精密程度,使得现实环境中相控阵雷达的研制与实验变得十分困难与昂贵。与此同时,计算机仿真技术以其便利性、灵活性及经济性体现出了其在雷达系统仿真中的优势。本文研究了相控阵系统仿真、相控阵资源调度以及相关的欺骗干扰效能。1.首先研究了相控阵雷达系统的工作原理,分析了相控阵雷达的天线阵列、回波信号生成、信号处理和数据处理模块的组成及实现方法。设计并完成了相控阵雷达的仿真软件,分析了其软件结构、运行流程,为相关的雷达对抗仿真提供了一个实验平台。2.研究了相控阵雷达的跟踪数据率自适应算法的原理,通过仿真比较了固定间隔法、递推法以及修正递推法的跟踪性能。重点研究了两种基于时间优先(EDF)模型的调度算法的原理,建立了有时间窗固定调度间隔算法与有时间窗可变调度间隔算法的算法实现模型,仿真验证了它们的性能指标。有时间窗可变调度间隔算法能够在较低的平均时间偏移率的前提下,使得雷达事件执行成功率与雷达调度间隔的利用率较优。另外,基于时间利用最大化的思想,提出了一种将雷达事件的驻留时间分段(DTS)的调度算法,仿真结果表明该算法能够进一步增加调度间隔利用率与事件执行成功率。3.研究分析了两种假目标欺骗式干扰与干扰效能评估准则,结合雷达跟踪数据率以及雷达资源调度算法,仿真分析了两种假目标干扰对雷达的干扰效能,并提出了一种针对资源调度的假目标干扰策略,使得相控阵雷达不能识别真实目标并大幅降低雷达的搜索能力,取得了较好的干扰效果。
[Abstract]:Phased array radar, as an increasingly mature radar system, has been widely used in military and civilian fields. Therefore, electronic countermeasure against phased array radar has become a hot research direction. However, due to the complexity and precision of phased array radar system, it is very difficult and expensive to develop and experiment phased array radar in real environment. At the same time, the advantage of computer simulation technology in radar system simulation is demonstrated by its convenience, flexibility and economy. In this paper, the simulation of phased array system, the scheduling of phased array resources and the effectiveness of spoofing jamming are studied. Firstly, the principle of phased array radar system is studied, and the structure and implementation of antenna array, echo signal generation, signal processing and data processing module of phased array radar are analyzed. The simulation software of phased array radar is designed and completed. The software structure and running flow are analyzed. The principle of tracking data rate adaptive algorithm for phased array radar is studied. The tracking performance of fixed interval method, recursive method and modified recursive method are compared by simulation. The principle of two scheduling algorithms based on time-first EDF model is studied emphatically. The implementation models of fixed scheduling interval algorithm with time window and variable scheduling interval algorithm with time window are established, and their performance indexes are verified by simulation. The variable scheduling interval algorithm with time windows can make the success rate of radar event execution and the utilization ratio of radar scheduling interval better under the premise of lower average time offset. In addition, based on the idea of maximization of time utilization, a scheduling algorithm is proposed to divide the dwell time of radar events into DTS. The simulation results show that the algorithm can further increase the utilization rate of scheduling interval and the success rate of event execution. Two kinds of false target jamming and jamming effectiveness evaluation criteria are studied and analyzed. Combined with radar tracking data rate and radar resource scheduling algorithm, the jamming effectiveness of two false target jamming to radar is simulated and analyzed. A false target jamming strategy for resource scheduling is proposed, which makes phased array radar unable to identify real targets and greatly reduces radar search ability. Good jamming effect is achieved.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN958.92

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