本文選題：相控陣 + 數(shù)字波束形成　； 參考：《中國(guó)艦船研究院》2016年碩士論文

【摘要】：隨著電子信息系統(tǒng)技術(shù)的快速發(fā)展,數(shù)字相控陣技術(shù)日益成熟,應(yīng)用也愈來(lái)愈廣泛。為滿足未來(lái)軍用綜合電子信息系統(tǒng)的信號(hào)偵收、目標(biāo)探測(cè)和定位的多功能一體化作戰(zhàn)需求,在近年來(lái)發(fā)展起來(lái)的新一代多動(dòng)能一體化被動(dòng)探測(cè)定位系統(tǒng)中,廣泛采用了數(shù)字相控陣技術(shù),為實(shí)現(xiàn)多任務(wù)、多功能共用射頻系統(tǒng)和共享天線孔徑奠定了基礎(chǔ)�；跀�(shù)字相控陣技術(shù)的多功能一體化被動(dòng)探測(cè)系統(tǒng),既可以利用寬帶數(shù)字化技術(shù)實(shí)現(xiàn)對(duì)目標(biāo)輻射信號(hào)的頻域?qū)拵Ы孬@,又可充分利用數(shù)字波束形成技術(shù)具有的天線波束掃描靈活、高增益、低副瓣的優(yōu)點(diǎn),以及可同時(shí)形成多個(gè)天線波束的能力,通過(guò)采用同時(shí)數(shù)字多波束瞬時(shí)寬角空域覆蓋,實(shí)現(xiàn)對(duì)輻射源目標(biāo)信號(hào)的高概率截獲、高精度測(cè)向和連續(xù)跟蹤監(jiān)視。本論文課題針對(duì)未來(lái)海空一體化多功能被動(dòng)探測(cè)系統(tǒng)技術(shù)發(fā)展需求,重點(diǎn)探索數(shù)字多波束寬角覆蓋高效空域掃描策略、接收數(shù)字多波束形成方法、被動(dòng)探測(cè)數(shù)據(jù)處理方法和數(shù)字相控陣多功能被動(dòng)探測(cè)系統(tǒng)工程設(shè)計(jì)方法。論文分析了多功能被動(dòng)探測(cè)系統(tǒng)在頻域、空域、時(shí)域?qū)椛湓茨繕?biāo)信號(hào)的截獲條件,在天線波束空域掃描波位編排方面,基于權(quán)重分區(qū)思想,建立了關(guān)于截獲概率、平均發(fā)現(xiàn)時(shí)間、搜索時(shí)間配額的空域搜索參數(shù)聯(lián)合優(yōu)化模型,求解得到了高截獲概率的最優(yōu)子空域搜索幀周期,并仿真分析了該算法對(duì)輻射源目標(biāo)信號(hào)的截獲性能;在數(shù)字多波束形成和目標(biāo)測(cè)向方面,討論了基于單脈沖的多波束比幅測(cè)向及數(shù)字和差比幅測(cè)向算法,給出了通過(guò)鑒角曲線線性擬合進(jìn)行角度估計(jì)的單脈沖數(shù)字和差比幅測(cè)向簡(jiǎn)化算法;在輻射源信號(hào)分選和目標(biāo)定位方面,仿真分析了動(dòng)態(tài)關(guān)聯(lián)和直方圖信號(hào)分選方法,針對(duì)雙站測(cè)向交叉定位算法,給出了在最小圓概率誤差準(zhǔn)則下形成最優(yōu)交會(huì)角的條件,并利用用實(shí)測(cè)數(shù)據(jù)對(duì)數(shù)據(jù)處理算法的性能進(jìn)行了仿真驗(yàn)證。在數(shù)字相控陣多功能被動(dòng)探測(cè)系統(tǒng)設(shè)計(jì)方面,給出了典型系統(tǒng)組成框圖、被動(dòng)探測(cè)信號(hào)處理系統(tǒng)設(shè)計(jì)和雙站協(xié)同被動(dòng)測(cè)向交叉定位系統(tǒng)設(shè)計(jì)方案,并研制了雙站協(xié)同探測(cè)系統(tǒng)組網(wǎng)控制軟件和雙站協(xié)同被動(dòng)探測(cè)系統(tǒng)數(shù)據(jù)處理軟件。
[Abstract]:With the rapid development of electronic information system technology, digital phased array technology is becoming more and more mature and widely used. In order to meet the need of multi-function integrated combat of signal acquisition, target detection and positioning in the future military integrated electronic information system, a new generation of multi-kinetic energy integrated passive detection and positioning system has been developed in recent years. Digital phased array technology is widely used, which lays the foundation for multitask, multi-function common RF system and shared antenna aperture. The multifunctional integrated passive detection system based on digital phased array technology can realize broadband interception of target radiation signal in frequency domain by using wideband digital technology. It can also make full use of the advantages of flexible antenna beam scanning, high gain and low sidelobe, and the ability to form multiple antenna beams simultaneously. By using simultaneous digital multi-beam instantaneous wide-angle airspace coverage, High probability interception, high precision direction finding and continuous tracking of emitter target signal are realized. In order to meet the needs of the future multi-function passive detection system, this paper focuses on the digital multi-beam wide-angle coverage high-efficiency airspace scanning strategy, and receives the digital multi-beam forming method. Passive detection data processing method and digital phased array multifunctional passive detection system engineering design method. In this paper, the acquisition conditions of radiation source signals in frequency domain, spatial domain and time domain for multifunctional passive detection system are analyzed. The interception probability is established on the basis of weighted partitioning in antenna beam spatial domain scanning wave level arrangement. The optimal subdomain search frame period with high probability of interception is obtained by the joint optimization model of spatial search parameters of average discovery time and search time quota, and the performance of the algorithm for intercepting emitter target signals is analyzed by simulation. In the aspect of digital multi-beam forming and target direction finding, the multi-beam specific amplitude direction finding and digital and differential amplitude direction finding algorithms based on single pulse are discussed. A simplified algorithm of single pulse digital and differential ratio amplitude direction finding for angle estimation by linear fitting of angle discrimination curve is presented, and the dynamic correlation and histogram signal sorting methods are simulated and analyzed in the aspects of emitter signal sorting and target location. For the bistatic direction finding cross location algorithm, the condition of forming the optimal intersection angle under the minimum circle probability error criterion is given, and the performance of the data processing algorithm is simulated by using the measured data. In the design of digital phased array multifunctional passive detection system, the typical system block diagram, the design of passive detection signal processing system and the design scheme of bistatic cooperative passive direction finding cross location system are given. The network control software of bistatic cooperative detection system and the data processing software of bistatic cooperative passive detection system are developed.
【學(xué)位授予單位】：中國(guó)艦船研究院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TN97

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本文編號(hào)：1861998