雷达侦察信号的认知处理技术研究

发布时间：2018-01-17 18:13

本文关键词：雷达侦察信号的认知处理技术研究　出处：《西安电子科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：认知电子战是指能动态的对环境进行感知、主动调整自身行为的电子战技术。目前,国内对认知电子战的研究还处于理论论证阶段,国外的多个认知电子战项目也刚刚展开。认知电子战是未来电子战发展的必然趋势,对认知电子战的研究有着重要的意义。认知电子战分为:认知侦察、认知干扰、认知知识库和干扰决策四个模块。本文针对认知电子战中的认知侦察模块提出了一种可能的组织和运行模式,给出了该模块两种可能的处理流程,分析两种流程的优缺点,并使用其中一种处理流程对侦察系统的频域参数测量和空域参数测量两个部分提出了各自的认知处理方法。在对频域参数的测量方面,提出了基于认知技术的宽带数字信道化技术..认知数字信道化。该方法在数字信道化的基础上进行改进,使用传统数字信道和认知处理并行,将传统数字信道化处理的结果送给认知处理模块,认知模块结合认知学习库对测量结果进行学习,得到信号的基本参数及其变化趋势的预测,根据该认识结果对传统信道的参数进行动态调整,从而获得最优的测量结果。在对空域参数的测量方面,提出了基于认知技术的数字多波束形成技术..认知数字多波束形成。该方法与认知数字信道化技术类似,在数字多波束形成的基础上进行改进。具体过程为:首先使用数字波束形成(#(/#,简称(/)形成初始多波束,然后将处理结果送给认知处理模块,认知模块结合认知学习库得到信号的基本参数和变化趋势预测,对(/的参数进行动态调整,提高测向精度。
[Abstract]:Cognitive electronic warfare (EW) is an electronic warfare technology that can dynamically perceive the environment and actively adjust its behavior. At present, the domestic research on cognitive electronic warfare is still in the theoretical stage. Cognitive electronic warfare is the inevitable trend of the future development of electronic warfare, which is of great significance to the research of cognitive electronic warfare. Cognitive electronic warfare is divided into cognitive reconnaissance. Cognitive interference, cognitive knowledge base and interference decision-making are four modules. This paper proposes a possible organization and operation mode for cognitive reconnaissance module in cognitive electronic warfare, and gives two possible processing processes. This paper analyzes the advantages and disadvantages of the two processes, and presents their cognitive processing methods for the frequency domain parameter measurement and the spatial domain parameter measurement of the reconnaissance system by using one of the processing flow, which is used to measure the frequency domain parameters. The cognitive digital channelization is proposed. This method is improved on the basis of digital channelization, using the traditional digital channel and cognitive processing parallel. The results of traditional digital channelization processing are sent to the cognitive processing module. The cognitive module combines the cognitive learning database to study the measurement results to obtain the basic parameters of the signal and the prediction of the change trend. According to the recognition results, the parameters of the traditional channel are dynamically adjusted to obtain the optimal measurement results. The cognitive digital multi-beam forming technology is proposed, which is similar to the cognitive digital channelization technique. On the basis of the improvement of digital multi-beam forming, the concrete process is: first, using digital beamforming to form the initial multi-beam, then sending the processing results to the cognitive processing module. The cognitive module combines the cognitive learning database to get the basic parameters of the signal and forecast the change trend, and dynamically adjusts the parameters to improve the precision of direction finding.
【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】：2015
【分类号】：TN957.51

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