典型相控阵雷达建模与系统仿真研究

发布时间：2018-05-18 20:55

本文选题：大型相控阵预警雷达 + 雷达导引系统　；参考：《电子科技大学》2017年硕士论文

【摘要】：随着雷达在军事战略中的重要性日益凸显,相控阵雷达技术一经提出便引起广泛关注。相控阵雷达相比传统机械雷达有着巨大优势,不仅可以实现无惯性扫描、波束捷变,而且可以结合信号处理技术,实现多目标跟踪、雷达成像、目标特征识别等高级功能。如此广阔的运用场景,决定了相控阵雷达技术有着很高的研究价值。由于相控阵雷达具有众多技术优势,因此其被广泛地应用到各种各样的场景中。根据应用场景的不同,往往需要将相控阵技术与特定领域技术相结合。构建实际的雷达系统造价高、周期长,而计算机仿真可以方便有效地验证雷达性能,为电子对抗、攻防演练提供参考。本文分别针对相控阵雷达在远程预警和导弹制导两个典型场景进行了研究,具体内容包含如下几点:1、介绍了相控阵雷达的基本原理,对雷达回波信号的组成及其数学模型进行了相应分析;同时介绍了相控阵雷达的信号处理基本流程,着重讨论了脉冲压缩、动目标检测技术以及keystone变换。2、对大型相控阵预警雷达的性能参数进行逆向分析,从天线布阵和子阵划分等角度入手,对收集来的雷达参数信息做合理性分析,并给出相应仿真结果;针对相控阵天线相位中心计算的问题,本文提出了基于单脉冲测角理论的相位中心计算方法,详细阐述了计算原理,并与相位梯度计算法进行仿真对比实验。3、结合性能系统参数逆向分析,对大型相控阵预警雷达进行建模与系统仿真。对信号模型、信号处理、数据处理以及资源管理这些模块分别进行仿真分析,并给出仿真结果;同时构造多目标入侵以及目标分裂的场景,对整个预警雷达进行仿真实验。4、对相控阵雷达导引系统进行建模与系统仿真。结合雷达原理,给出整个系统设计框架与工作流程;针对导弹制导场景,着重介绍了比例导引法的基本原理与数学模型;运用面向对象设计思想,利用MFC软件库,对整个雷达导引系统进行软件架构设计,同时为该仿真平台开发图像界面;合理构造实验场景,利用该平台对飞行目标进行制导拦截,并给出动态仿真结果。
[Abstract]:With the increasing importance of radar in military strategy, phased array radar technology has attracted wide attention once it is put forward. Phased array radar has a great advantage over traditional mechanical radar. It can not only realize inertial scanning, beam agility, but also realize advanced functions such as multi-target tracking, radar imaging, target feature recognition and so on, combined with signal processing technology. With such a wide range of applications, phased array radar technology has a high research value. Phased array radar has many technical advantages, so it is widely used in various scenarios. According to the different application scenarios, it is often necessary to combine phased array technology with specific domain technology. The actual radar system has high cost and long period, and the computer simulation can verify the radar performance conveniently and effectively, and provide reference for the electronic countermeasure, attack and defense drill. In this paper, two typical scenarios of phased array radar, long-range early warning and missile guidance, are studied, including the following points: 1. The basic principle of phased array radar is introduced. The composition and mathematical model of radar echo signal are analyzed, the basic flow of phased array radar signal processing is introduced, and the pulse compression is discussed. Based on moving target detection technology and keystone transform. 2, the performance parameters of large phased array early warning radar are analyzed in reverse. The rationality of the collected radar parameter information is analyzed from the angle of antenna array and subarray partition. To solve the problem of phase center calculation of phased array antenna, this paper presents a calculation method of phase center based on monopulse angle measurement theory, and expounds the calculation principle in detail. The simulation results are compared with the phase gradient calculation method. 3. Combined with the reverse analysis of the performance system parameters, the modeling and system simulation of the large phased array early warning radar are carried out. The signal model, signal processing, data processing and resource management are simulated and analyzed respectively, and the simulation results are given. At the same time, the scene of multi-target intrusion and target splitting is constructed. The simulation experiment of the whole early warning radar is carried out, and the modeling and system simulation of phased array radar guidance system are carried out. Combined with the principle of radar, the whole system design frame and work flow are given, the basic principle and mathematical model of proportional guidance method for missile guidance scene are introduced emphatically, the object oriented design idea and MFC software library are used. The software architecture of the whole radar guidance system is designed and the image interface is developed for the simulation platform. The experimental scene is constructed reasonably and the flight target is guided and intercepted by the platform and the dynamic simulation results are given.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN958.92

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