电子侦察仿真系统的建模与实现

发布时间：2018-03-07 04:08

本文选题：电子侦察　切入点：软件体系结构　出处：《西安电子科技大学》2014年硕士论文　论文类型：学位论文

【摘要】：电子对抗设备系统的研制是一项比较复杂的工程,它主要包括电子侦察系统和电子干扰系统两大组成部分,其中电子侦察则是实施电子对抗的基础和前提。每一系统都包含若干层次,涉及众多的专业领域,通过仿真技术来验证系统的可靠性及稳定性既可以有效的评估系统的性能又能弥补外场试验的不足。首先,本文描述了标准化、层次化及动态可重构的软件体系结构设计原则,并在此基础上讨论了基于层次系统、管道/过滤器、面向对象的侦察仿真系统体系结构设计。接着,本文对电子侦察系统中信道化接收机、瞬时测频接收机及干涉仪测向接收机进行了数学建模,并利用MATLAB进行了仿真验证。首先,通过分析低通滤波器组模型效率低下的问题,实现了高性能的基于复信号和实信号的多相DFT结构的滤波器组模型。其次,本文对基于瞬时自相关法的数字测频模型和基于相位差分法的数字测频模型进行了详细的论述,两种测频算法原理简单,计算量小,易于工程实现。最后,本文重点讨论了鉴相器模型和相位解模糊模型。其中,鉴相器模型主要讨论了基于时域和频域上的窄带信号鉴相算法和基于频域上的宽带信号鉴相算法,一定的信噪比下,两种算法的鉴相精度比较高;相位解模糊模型则主要讨论了基于窄带信号的解模糊算法和基于宽带信号的解模糊算法,合理的入射角范围内,两种算法的相位解模糊性能较好。然后,论文在分析总结侦察仿真系统软件体系结构及测频、测向理论模型的基础上,利用统一建模语言(UML)对电子侦察系统的各个功能模块进行了用例模型、静态模型与动态模型的软件建模,然后根据已建立好的UML模型对侦察系统的功能模块进行了标准化、层次化与可视化的底层模型设计与实现。最后,在参研项目开发平台的基础上,利用系统建模软件对侦察系统各个功能模块进行了底层的开发与设计,并通过系统架构软件对某电子侦察仿真系统进行了模块的整体搭建、参数的综合设置与系统的联合仿真分析,从而实现了电子侦察仿真系统跨平台、跨软件的异构仿真模型的建模工作,满足了建模与仿真技术分布式、互操作、可重用的发展需求。
[Abstract]:The development of electronic countermeasure equipment system is a complicated project. It mainly includes two major components: electronic reconnaissance system and electronic jamming system. Among them, electronic reconnaissance is the basis and prerequisite for the implementation of electronic countermeasures. Each system consists of several levels and involves many professional fields. Simulation technology is used to verify the reliability and stability of the system, which can effectively evaluate the performance of the system and make up for the deficiency of the field test. Firstly, this paper describes the principles of software architecture design, which are standardized, hierarchical and dynamically reconfigurable. On this basis, the architecture design of reconnaissance simulation system based on hierarchical system, pipeline / filter, object oriented is discussed. Then, the channelized receiver in electronic reconnaissance system is discussed in this paper. The instantaneous frequency measurement receiver and interferometer direction-finding receiver are modeled and simulated by MATLAB. Firstly, the problem of low pass filter bank model efficiency is analyzed. The high performance filter bank model of multiphase DFT structure based on complex signal and real signal is realized. Secondly, the digital frequency measurement model based on instantaneous autocorrelation method and the digital frequency measurement model based on phase difference method are discussed in detail in this paper. The two frequency measurement algorithms are simple in principle, small in computation and easy to be realized in engineering. Finally, the phase discriminator model and the phase resolution fuzzy model are discussed in this paper. The phase discriminator model mainly discusses the narrowband signal phase detection algorithm based on time domain and frequency domain and wideband signal phase detection algorithm based on frequency domain. The phase defuzzification model mainly discusses the algorithm based on narrowband signal and wideband signal. The two algorithms have better performance in the range of reasonable incidence angle. On the basis of analyzing and summarizing the software architecture, frequency measurement and direction finding theory model of reconnaissance simulation system, the use case model of each function module of electronic reconnaissance system is carried out by using unified modeling language (UML). The software modeling of static model and dynamic model, and then based on the established UML model, the function module of reconnaissance system is standardized, hierarchical and visualized, and the underlying model is designed and implemented. On the basis of the development platform of the project, the system modeling software is used to develop and design each function module of the reconnaissance system, and the whole module of an electronic reconnaissance simulation system is built by the system architecture software. The integrated setting of parameters and the joint simulation analysis of the system can realize the modeling of heterogeneous simulation model of electronic reconnaissance simulation system across platforms and software, which satisfies the distributed and interoperation of modeling and simulation technology. Reusable development needs.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN971

【参考文献】