相控阵雷达系统仿真及干扰研究

【作者】 杨源；

【导师】 魏平；

【作者基本信息】 电子科技大学 ， 信号与信息处理， 2011， 硕士

【摘要】 相控阵雷达是雷达技术发展到一定阶段的产物,也是雷达技术发展的一个重要方向,比传统雷达有着很多技术上的优势以及广泛的应用前景。但是由于其设备复杂,造价昂贵,因此在研发和试验中很多重要技术参数的获取就受到了很大的制约,而相控阵雷达仿真系统因其所具有的很强的灵活性、可重复性以及经济性等优点在一定程度上解决了这个问题。本文主要就相控阵雷达系统的仿真及几种欺骗干扰进行了研究。1.对相控阵天线的方向图进行了研究,并且与简化模型进行了对比,同时,利用简化了的方向图,生成振幅和差的空间和差波束的方向图函数。2.对相控阵雷达的信号处理模型进行了分析,这里主要研究了脉冲压缩、恒虚警处理和角度测量几个模块,在介绍脉冲压缩前将线性调频信号的特性进行了分析,同时进行相关的仿真。3.研究分析了相控阵雷达的数据处理模型,利用同余算法解距离、速度模糊,重点对目标的航迹处理进行了分析研究,其中包括航迹起始和终止、点迹-航迹关联和目标跟踪方式。4.研究分析了四种欺骗式干扰,通过理论分析与仿真结果进行对比,验证结论的正确性,同时在分析过程中,给出干扰实施中应注意的问题,为实施干扰提供参考。5.设计实现了的相控阵雷达仿真系统,并对其构成及功能进行了介绍,同时进行相应的仿真测试与分析,为相关的研究工作提供一个基本的实验平台。由于其接收等模块与传统雷达相似,因此本文就不做分析,直接在系统中进行仿真。本系统的设计实现主要采用Matlab软件进行的功能建模和验证,并在此软件平台上搭建出相控阵雷达系统的仿真平台。更多还原

【Abstract】 Phased array radar is the product of radar technology developed to a certain stage, it’s also one of the important directions of the radar technology development. Compared with conventional radar, it has many technical advantages and broad prospect of application. However, it is limited to obtain so many important technical parameters during its procedures of the research and testing because of its complex equipment and high prices, while phased array radar simulation system solves the problem to some extent, because of its very strong flexibility, repeatability, economy and other advantages.This paper mainly studies the phased-array radar system simulation and several deceptions jamming.1. It researches phased array antenna direction figure, and compares it with the simplified model. At the same time, it makes use of the simplified directed graph, generating amplitude and poor space and difference beam direction figure function.2. It analyzes the phased array radar signal processing model. It mainly introduces the pulse compression, constant false-alarm processing and angle measurement modules; before introducing the pulse compression, it analyzes the characteristics of the linear frequency modulation signal. Meanwhile, it does relevant simulation.3. It studies and analyzes the phased-array radar data processing model. It focuses on analyzing and studying the target track processing by using congruence algorithm solution distance and velocity ambiguity. It includes track starting and ending, point mark - correlation and target tracking.4. It researches and analyzes the four deceive type jamming. By comparing the theoretical analysis with the simulation results, it testes and verified the correctness of the contrast. At the same time, in the course of analysis, it gives the problems that should be paid attention to in the implementation of interference to provide a reference for the implementation of jamming.5. The phased array radar simulation system has been designed and accomplished, and in this paper it introduces the composition of the design and implementation of phased array radar simulation system and function. It also carried on the corresponding simulation test and analysis to provide a basic experimental platform for the related research. Because its receiving and other modules are similar to the modules of the traditional radar, therefore, this paper did not do any analysis, it’s directly simulated on the system.The realization of the design of this system mainly uses Matlab software to design and realize the function modeling and verification, and on this software platform it builds out phased-array radar system simulation platform.更多还原