【摘要】：隨著雷達(dá)信息技術(shù)不斷的進(jìn)步,將來戰(zhàn)爭(zhēng)的勝利更取決于信息對(duì)抗的能力。自問世以來,電子對(duì)抗尤其是雷達(dá)之間的對(duì)抗相當(dāng)激烈,各種新型武器都需要借助雷達(dá)來偵察、干擾、損壞敵方雷達(dá)及其武器系統(tǒng),只有最大限度地挖據(jù)和利用雷達(dá)系統(tǒng)所獲取的信息,才能提高雷達(dá)抗干擾能力,進(jìn)而適應(yīng)復(fù)雜多變的戰(zhàn)場(chǎng)環(huán)境。本文在研究DRFM噪聲壓制干擾和欺騙性干擾的特性和產(chǎn)生基礎(chǔ)上,針對(duì)每個(gè)干擾方式進(jìn)行對(duì)應(yīng)的抗干擾算仿真,并設(shè)計(jì)一種雷達(dá)信號(hào)監(jiān)測(cè)系統(tǒng),更方便直觀的監(jiān)測(cè)雷達(dá)干擾信號(hào)和目標(biāo)回波信號(hào),從而有利于監(jiān)測(cè)。主要包括以下幾個(gè)方面:(1)介紹DRFM的工作原理,然后分析DRFM量化方式(即:單通道幅度量化和正交雙通道幅度量化),并分析DRFM存儲(chǔ)方式(即:全脈沖存儲(chǔ)、式樣脈沖存儲(chǔ)和慢刷新率脈沖存儲(chǔ)),最后研究DRFM干擾的主要指標(biāo)并對(duì)其特性進(jìn)行分析。(2)介紹噪聲壓制式干擾的分類及產(chǎn)生,主要對(duì)調(diào)幅干擾和調(diào)頻干擾的特征進(jìn)行分析,并分別分析這兩種干擾信號(hào)產(chǎn)生過程,在此基礎(chǔ)上,研究頻率對(duì)消的抗調(diào)幅干擾和小波變換的抗調(diào)頻干擾的算法,并通過仿真驗(yàn)證抗干擾方法的可行性。(3)簡(jiǎn)述雷達(dá)欺騙性干擾的原理,并分析欺騙性干擾對(duì)雷達(dá)的作用,然后簡(jiǎn)要介紹欺騙性干擾的主要樣式,然后簡(jiǎn)要分析SV-LFM信號(hào)及其特性,在此基礎(chǔ)上研究抗距離假目標(biāo)干擾算法與抗距離波門拖引干擾,并重點(diǎn)研究直接脈壓匹配法和三步匹配濾波算法,通過仿真實(shí)驗(yàn)對(duì)算法進(jìn)行驗(yàn)證,從而驗(yàn)證該算法的可行性。(4)根據(jù)雷達(dá)抗干擾設(shè)計(jì)出一種監(jiān)測(cè)信號(hào)系統(tǒng),利用.Net平臺(tái)搭建環(huán)境,介紹該系統(tǒng)的總體思路以及系統(tǒng)結(jié)構(gòu),將雷達(dá)接收的傳輸信號(hào)存儲(chǔ),然后通過解析XML文件獲得信號(hào)參數(shù)展示在列表或圖形中,有選擇性的進(jìn)行監(jiān)測(cè),并對(duì)需要進(jìn)一步分析的信號(hào)可以存儲(chǔ)在數(shù)據(jù)庫(kù)中,可以通過查詢工具快速找到信號(hào),也可以將其重新放入列表或圖形中進(jìn)行回放。最后以直接脈壓匹配法的抗距離欺騙干擾為基礎(chǔ),對(duì)設(shè)計(jì)的雷達(dá)信號(hào)監(jiān)測(cè)系統(tǒng)的可行性進(jìn)行驗(yàn)證,經(jīng)過多次調(diào)試最終達(dá)到目標(biāo)信號(hào),抑制了干擾信號(hào)。最終通過仿真分別驗(yàn)證抗噪聲壓制干擾和抗欺騙性干擾的算法,并與設(shè)計(jì)的雷達(dá)防干擾信號(hào)監(jiān)測(cè)系統(tǒng)測(cè)試的結(jié)果相比較,進(jìn)一步說明該系統(tǒng)的可行性,符合抗干擾的要求。
[Abstract]:With the development of radar information technology, the victory of future war depends on the ability of information countermeasure. Since its inception, electronic warfare, especially between radars, has been quite intense. All kinds of new types of weapons need radar to detect, interfere with and damage enemy radars and their weapon systems. Only by digging the data to the maximum extent and using the information obtained by radar system can the anti-jamming ability of radar be improved, and then the radar can adapt to the complex and changeable battlefield environment. On the basis of studying the characteristics and generation of DRFM noise suppression jamming and deceptive jamming, this paper carries out the corresponding anti-jamming simulation for each jamming mode, and designs a radar signal monitoring system. It is convenient and intuitionistic to monitor radar jamming signal and target echo signal. The main contents are as follows: (1) introduce the working principle of DRFM, then analyze the quantization mode of DRFM (that is, single channel amplitude quantization and quadrature double channel amplitude quantization), and analyze the DRFM storage mode (that is, full pulse storage). Model pulse storage and slow refresh rate pulse storage). Finally, the main indexes of DRFM interference are studied and its characteristics are analyzed. (2) the classification and generation of noise suppression jamming are introduced. The characteristics of amplitude modulation jamming and frequency modulation jamming are analyzed, and the process of producing these two kinds of interference signals are analyzed respectively. On this basis, the anti-amplitude interference of frequency cancellation and the anti-FM jamming algorithm of wavelet transform are studied. The feasibility of anti-jamming method is verified by simulation. (3) the principle of deceptive jamming of radar is briefly described, and the function of deceptive jamming to radar is analyzed, and then the main patterns of deceptive jamming are introduced briefly. Then, the SV-LFM signal and its characteristics are briefly analyzed. On this basis, the anti-range false target jamming algorithm and the range gate towing interference are studied, and the direct pulse compression matching method and the three-step matched filtering algorithm are emphatically studied. The feasibility of the algorithm is verified by simulation experiments. (4) according to radar anti-jamming, a monitoring signal system is designed. The environment is built by using .Net platform, and the general idea and structure of the system are introduced. The transmitted signals received by the radar are stored, and then the signal parameters obtained by parsing the XML file are displayed in the list or graph, which can be selectively monitored, and the signals that need further analysis can be stored in the database. You can quickly find the signal through the query tool, or you can put it back in a list or graph for playback. Finally, the feasibility of the radar signal monitoring system is verified based on the direct pulse pressure matching method to resist range deception jamming. After many debugging, the target signal is finally achieved and the jamming signal is suppressed. Finally, the algorithms of anti-noise suppression jamming and anti-deceptive jamming are verified by simulation, and compared with the test results of the radar anti-jamming signal monitoring system, it is further proved that the system is feasible and meets the requirements of anti-jamming.
【學(xué)位授予單位】：成都理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN974

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