雷达有源干扰信号识别方法研究与实现

发布时间：2018-05-18 09:04

本文选题：雷达有源干扰 + 识别　；参考：《北京理工大学》2014年硕士论文

【摘要】：随着现代电子科学技术、雷达技术的不断发展，雷达对抗已经成为各国关注的焦点，各国都在进行有关雷达对抗的研究与实验，投入的人力物力都在逐年提高。因此，能否准确无误地识别电磁空间中存在的干扰信号，取得雷达对抗的胜利，影响乃至决定着整个战争的成败。本论文正是在上述背景下，以课题组在雷达信号处理方面多年积累的成果为基础，以目前常见的雷达有源干扰信号为对象，结合项目需求，研究雷达有源干扰信号的识别方法，用于引导雷达采取有针对性的抗干扰措施，提高雷达的抗干扰能力。本论文主要包括雷达有源干扰信号识别算法研究与雷达有源干扰信号识别方法设计与实现两个部分。论文主要内容包括分析雷达有源干扰信号干扰机理与时频特征，依据特征参数设计基于数字信道化的识别方法，，最后实现基于DSP的雷达有源干扰信号识别软件。研究结果如下： 1)对于常见压制式有源干扰，可依据信号时域过门限时长、频域频率分布规律等特征，结合雷达回波信号参数，在信号检测环节进行识别。 2)对于常见欺骗式有源干扰，可依据检测到的单周期脉冲描述字或周期间辐射源全脉冲描述字的变化规律，结合雷达工作状态及雷达回波信号参数进行识别。 3)对于常见雷达有源干扰信号，可以使用数字信道化技术，得到干扰信号的时频域特征参数、脉冲描述字参数，据此设计基于DSP的雷达常见有源干扰信号识别软件。本论文所设计的雷达有源干扰信号识别方法都通过了仿真测试与项目验证，具有较高识别率。本论文所设计的基于DSP的雷达常见有源干扰信号识别软件，经过了项目测试验证，具有强实用性与高可靠性。
[Abstract]:With the development of modern electronic technology and radar technology, radar countermeasure has become the focus of attention of all countries. All countries are carrying out research and experiments on radar countermeasure, and the manpower and material resources invested are increasing year by year. Therefore, whether we can accurately identify the jamming signals in electromagnetic space and win the radar countermeasure affects or even determines the success or failure of the whole war. Under the above background, based on the accumulated achievements in radar signal processing, this paper studies the recognition method of radar active jamming signal, which is based on the common radar active jamming signal. It is used to guide radar to take targeted anti-jamming measures to improve the anti-jamming capability of radar. This paper mainly includes two parts: the research of radar active jamming signal recognition algorithm and the design and realization of radar active jamming signal recognition method. The main contents of this paper include the analysis of jamming mechanism and time-frequency characteristics of radar active jamming signal, the design of recognition method based on digital channelization according to the characteristic parameters, and the realization of radar active jamming signal recognition software based on DSP. The findings are as follows: 1) for the common suppression active jamming, the signal can be recognized in signal detection according to the characteristics of time-domain crossing threshold and frequency distribution in frequency domain, combined with radar echo signal parameters. 2) for the common deceptive active jamming, we can identify the radar working state and the radar echo signal parameters according to the change rule of the detected single-period pulse description word or the full-pulse description word of the emitter source during the cycle. 3) for the common radar active jamming signal, the digital channelization technique can be used to obtain the characteristic parameters of the jamming signal in time-frequency domain and the parameters of the pulse description word. According to this, the recognition software of radar active jamming signal based on DSP is designed. The radar active jamming signal recognition methods designed in this paper have passed the simulation test and project verification, and have a high recognition rate. The common radar active jamming signal recognition software based on DSP has been tested and proved to be practical and reliable.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN974

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