基于特征参数提取的通信抗干扰仿真实验平台分析与实现

发布时间：2018-05-12 04:54

本文选题：扫描干扰 + 抗干扰　；参考：《电子科技大学》2014年硕士论文

【摘要】：众所周知,信息战已经成为现代战争中的主要组成部分,怎样才能掌握战场中的“制信息权”成为军事通信领域主要研究对象。战场形势日趋复杂,各种军事通信高技术相继成熟化,对信息的争夺也更加激烈。现代战争是信息化条件下陆、海、空、天一体化的联合作战,高效可靠的军事通信是赢得战争胜利的关键因素之一。敌方针对军事无线通信的干扰手段和干扰样式也在不断发展。为了抵抗这些不断变化的干扰,各种各样的抗干扰手段应运而生,各种扩频的、非扩频的,时域的、频域的、功率域的抗干扰技术与措施由于它们的抗干扰机理不同,因此可以抵抗不同的干扰信号,但由于敌干扰手段的不断变化,其干扰形式正由固定干扰向动态干扰、由压制干扰向灵巧干扰发展,其中动态干扰样式对军事无线通信威胁更大,也对通信抗干扰提出了新挑战,而传统的干扰方式多是通过改变发送信号的某些特征来进行抗干扰,如果可以了解干扰信号的某些参数特征,针对这些特征来避免干扰,这将是一种非常行之有效的抗干扰方法。目前敌方干扰形式多种多样,针对不同的干扰具有不同的抗干扰手段,针对这些抗干扰手段许多学者也进行了仿真分析研究,但这些仿真分析都是独立进行,对于使用者来说难于进行不同抗干扰方式效果的比较,难于对抗干扰仿真效果进行比较,因此,如果能够对这些干扰手段、提取的参数准确度以及抗干扰的效果进行综合分析,开发出能够综合各种仿真的抗干扰仿真实验平台将具有重要的实际意义。首先,本文简要分析了课题研究的背景、目的和意义,讨论了抗干扰仿真实验平台开发的主要内容以及研究的思路和方法。其次,本文针对抗干扰仿真平台开发的需求,分析了干扰信号模型及其数学表达方式,分析了干扰信号特征参数提取的主要算法以及通信抗干扰技术的原理、抗干扰常用算法和相关的难题,为仿真平台的开发提供理论基础。再次,在介绍Matlab仿真软件的基础上,对通信抗干扰仿真平台的需求进行总结分析,给出软件的基本结构及需要设计的主要内容和对象,自主编写了通信仿真的基本程序以及干扰信号和抗干扰算法的程序,并对各仿真程序进行了调试与测试,开发了仿真平台界面,并利用该平台给出了抗干扰的仿真结果,对结果进行了分析。最后,本文对全文的工作进行了总结分析,指出了需进一步研究的问题。
[Abstract]:As we all know, information warfare has become the main component of modern warfare. How to master the "power of information" in the battlefield has become the main research object in the field of military communication. The battlefield situation is becoming more and more complex, various military communications high-tech has matured, and the competition for information is becoming more fierce. Modern war is a combination of land, sea, air and space under the condition of information, and efficient and reliable military communication is one of the key factors to win the war. The jamming means and jamming patterns of the enemy for military wireless communication are also developing. In order to resist these constantly changing interference, various anti-jamming methods come into being. Various anti-jamming techniques and measures in spread spectrum, non-spread spectrum, time domain, frequency domain and power domain are different from each other because of their anti-jamming mechanism. As a result, different jamming signals can be resisted, but due to the constant changes in the means of jamming by the enemy, the forms of interference are changing from fixed to dynamic, from suppressing jamming to dexterous interference. Among them, the dynamic jamming mode poses a greater threat to the military wireless communication, and also puts forward a new challenge to the communication anti-jamming. However, the traditional jamming methods are mostly by changing some characteristics of the transmitted signal to carry out anti-jamming. If we can understand the characteristics of some parameters of the jamming signal and avoid the interference according to these characteristics, it will be a very effective anti-jamming method. At present, there are various forms of enemy jamming, and there are different anti-jamming methods for different jamming. Many scholars have also carried out simulation analysis and research on these anti-jamming means, but these simulation and analysis methods are carried out independently. It is difficult for the user to compare the effects of different anti-jamming methods and the anti-jamming simulation effects. Therefore, if the interference means, the accuracy of the parameters extracted and the anti-jamming effects can be comprehensively analyzed, It will be of great practical significance to develop an anti-interference simulation experimental platform which can synthesize all kinds of simulation. Firstly, this paper briefly analyzes the background, purpose and significance of the research, and discusses the main contents of the development of anti-jamming simulation experimental platform, as well as the research ideas and methods. Secondly, according to the demand of anti-jamming simulation platform, this paper analyzes the interference signal model and its mathematical expression, analyzes the main algorithm of feature parameter extraction of interference signal and the principle of communication anti-jamming technology. Anti-jamming algorithms and related problems provide a theoretical basis for the development of simulation platform. Thirdly, based on the introduction of Matlab simulation software, the requirements of communication anti-jamming simulation platform are summarized and analyzed, and the basic structure of the software and the main contents and objects of design are given. The basic program of communication simulation and the program of jamming signal and anti-jamming algorithm are written independently. The simulation program is debugged and tested, the interface of simulation platform is developed, and the simulation results of anti-jamming are given by using the platform. The results are analyzed. Finally, this paper summarizes and analyzes the work of the paper, and points out the problems that need further study.
【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】：TN975

【参考文献】