空空導(dǎo)彈雷達(dá)脈壓及目標(biāo)檢測技術(shù)研究
本文選題:空空導(dǎo)彈 + 雷達(dá)導(dǎo)引系統(tǒng) ; 參考:《電子科技大學(xué)》2017年碩士論文
【摘要】:空空導(dǎo)彈是由載機(jī)掛載,從載機(jī)上進(jìn)行發(fā)射,搜索截獲空中目標(biāo)后進(jìn)行攻擊并將其摧毀的導(dǎo)彈,并且在整個(gè)工作過程中載機(jī)和目標(biāo)運(yùn)動(dòng)速度很快,是武器系統(tǒng)的一個(gè)獨(dú)特分支。當(dāng)前贏得高科技戰(zhàn)爭的關(guān)鍵就是奪取制空權(quán),由于空空導(dǎo)彈在戰(zhàn)爭中的獨(dú)特地位,成為世界上多個(gè)國家爭先發(fā)展和裝備的武器。傳統(tǒng)空空導(dǎo)彈雷達(dá)導(dǎo)引系統(tǒng)制導(dǎo)大多采用高重頻準(zhǔn)連續(xù)波體制,它的優(yōu)點(diǎn)在于發(fā)射占空比高、平均功率大,而且沒有測速模糊,因此具有較遠(yuǎn)的作用距離;同時(shí)由于大多在無雜波區(qū)檢測目標(biāo)(低空下視尾追除外),具有一定的抗雜波能力。其缺點(diǎn)是下視尾追條件下受地面雜波影響比較大,導(dǎo)致檢測性能大大降低,而且距離高度模糊,無法通過距離信息增加對目標(biāo)的識別能力,提高抗干擾性能。隨著飛行器和導(dǎo)彈的飛速發(fā)展,以及越發(fā)復(fù)雜的戰(zhàn)場電磁環(huán)境,對雷達(dá)導(dǎo)引系統(tǒng)的綜合能力提出了更高的要求。需要能夠在雷達(dá)目標(biāo)檢測技術(shù)上進(jìn)行優(yōu)化提高性能,應(yīng)用脈沖壓縮技術(shù),解決作用距離和功率的矛盾,增加距離信息的判斷,提高導(dǎo)彈作戰(zhàn)能力。本文主要對空空導(dǎo)彈雷達(dá)導(dǎo)引系統(tǒng)的脈壓技術(shù)和目標(biāo)檢測技術(shù)進(jìn)行了研究和方案設(shè)計(jì),并進(jìn)行了空空導(dǎo)彈雷達(dá)導(dǎo)引系統(tǒng)和信號處理系統(tǒng)的設(shè)計(jì)仿真。首先圍繞空空導(dǎo)彈雷達(dá)脈壓技術(shù),分析了雷達(dá)脈壓的基本原理以及實(shí)現(xiàn)方式,以及不同實(shí)現(xiàn)方式的優(yōu)缺點(diǎn);對常用的三種脈壓信號:線性調(diào)頻、非線性調(diào)頻、相位編碼信號進(jìn)行了設(shè)計(jì)和仿真,分析了各自的優(yōu)缺點(diǎn)。針對空空導(dǎo)彈的特點(diǎn)設(shè)計(jì)了脈壓技術(shù)方案。對雷達(dá)常用檢測技術(shù):動(dòng)目標(biāo)顯示技術(shù)、動(dòng)目標(biāo)檢測技術(shù)、恒虛警技術(shù)的原理、特點(diǎn)進(jìn)行了仿真分析,并設(shè)計(jì)了適合空空導(dǎo)彈的目標(biāo)檢測方案和恒虛警處理方案。結(jié)合空空導(dǎo)彈導(dǎo)引系統(tǒng)設(shè)計(jì),探討了導(dǎo)引系統(tǒng)設(shè)計(jì)時(shí)的波形設(shè)計(jì),信號處理系統(tǒng)參數(shù)設(shè)計(jì)及目標(biāo)檢測算法設(shè)計(jì),并進(jìn)行了仿真。對動(dòng)目標(biāo)檢測技術(shù)、高重頻和中重頻的恒虛警技術(shù)、中重頻脈壓技術(shù)在彈上的應(yīng)用進(jìn)行了驗(yàn)證,并給出了實(shí)際使用效果,并對以后的改進(jìn)和優(yōu)化提出了建議。
[Abstract]:Air-to-air missile (AAM) is a missile which is mounted by a carrier, launched from a carrier, attacked and destroyed by searching and intercepting an air target. It is a unique branch of the weapon system that carries the aircraft and the target moving very fast in the whole process of work. At present, the key to win the high-tech war is to seize the air power. Because of the unique position of the air-to-air missile in the war, it has become a weapon for many countries in the world to develop and equip first. The guidance of traditional air-to-air missile radar guidance system mostly adopts high repetition frequency quasi continuous wave system. Its advantages are high duty cycle, high average power, and no velocity ambiguity, so it has a long range. At the same time, most targets are detected in the region without clutter (except for the tail chase at low altitude), so they have a certain ability to resist clutter. Its shortcoming is that it is greatly affected by ground clutter under the condition of down-looking tail pursuit, which results in a great decrease in detection performance and a high ambiguity in distance, which can not increase the ability of target recognition through distance information and improve the anti-jamming performance. With the rapid development of aerocraft and missile, and the increasingly complex battlefield electromagnetic environment, the integrated capability of radar guidance system has been put forward higher requirements. It is necessary to optimize and improve the performance of radar target detection technology, apply pulse compression technology, solve the conflict between range and power, increase the judgment of range information, and improve missile combat capability. In this paper, the pulse compression technology and target detection technology of air-to-air missile radar guidance system are studied and designed, and the design and simulation of air-to-air missile radar guidance system and signal processing system are carried out. Firstly, the basic principle and realization of radar pulse compression, as well as the advantages and disadvantages of different methods are analyzed around the radar pulse compression technology of air-to-air missile, and three commonly used pulse compression signals: linear frequency modulation (LFM), nonlinear frequency modulation (FFM), nonlinear frequency modulation (FFM) are analyzed. The phase coding signal is designed and simulated, and their advantages and disadvantages are analyzed. According to the characteristics of the air-to-air missile, a pulse compression scheme is designed. The principle and characteristics of radar detection techniques such as moving target display technology, moving target detection technology and constant false alarm technology are simulated and analyzed. The target detection scheme and CFAR processing scheme suitable for air-to-air missile are designed. Combined with the design of air-to-air missile guidance system, the waveform design, signal processing system parameter design and target detection algorithm design are discussed and simulated. The applications of moving target detection technology, CFAR technology of high repetition frequency and middle repetition frequency, and pulse compression technology of middle repetition frequency in missile are verified, and the practical application results are given, and suggestions for future improvement and optimization are put forward.
【學(xué)位授予單位】:電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TJ762.23;TN957.51
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