本文選題：雷達(dá)散射截面　切入點(diǎn)：氣動(dòng)建模　出處：《國(guó)防科學(xué)技術(shù)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：雷達(dá)散射截面(Radar Cross Section,RCS)是雷達(dá)目標(biāo)特征信息中最重要、最基本的一個(gè)物理參數(shù)。當(dāng)前普遍采用靜態(tài)方法測(cè)量目標(biāo)RCS,測(cè)量結(jié)果不能真實(shí)地反映目標(biāo)的動(dòng)態(tài)特性,采用靜態(tài)數(shù)據(jù)作為雷達(dá)系統(tǒng)設(shè)計(jì)依據(jù)的可靠性不高,有必要研究雷達(dá)目標(biāo)動(dòng)態(tài)RCS特性對(duì)探測(cè)的影響。本文將F-117A作為研究對(duì)象,建模得到動(dòng)靜態(tài)RCS,通過(guò)建立的起伏目標(biāo)檢測(cè)性能評(píng)估方法對(duì)比動(dòng)靜態(tài)RCS對(duì)檢測(cè)性能的影響。具體研究?jī)?nèi)容包括三個(gè)方面:在起伏目標(biāo)檢測(cè)性能評(píng)估方面,(1)全面梳理現(xiàn)有典型分布模型,介紹了模型各自特點(diǎn)及相互關(guān)系;(2)對(duì)擬合結(jié)果進(jìn)行優(yōu)度檢驗(yàn),指出非參數(shù)法等不適用于擬合優(yōu)度檢驗(yàn)的原因,說(shuō)明了分段數(shù)的選取原則,并驗(yàn)證分段數(shù)對(duì)擬合效果的影響;(3)從理論推導(dǎo)和近似計(jì)算兩方面對(duì)雷達(dá)目標(biāo)檢測(cè)概率求解方法進(jìn)行詳細(xì)介紹,在理論推導(dǎo)方面首次推導(dǎo)出脈沖積累后2?分布起伏目標(biāo)的檢測(cè)概率公式,在近似計(jì)算方面介紹了第一、二代起伏模型的檢測(cè)概率近似快速算法。在RCS對(duì)雷達(dá)探測(cè)威力影響方面,(1)提出通過(guò)均值與起伏損耗來(lái)評(píng)估動(dòng)靜態(tài)RCS對(duì)雷達(dá)探測(cè)威力影響差異的方法;(2)系統(tǒng)性地對(duì)比了動(dòng)靜態(tài)RCS在雷達(dá)探測(cè)威力方面的差異,得出了具有借鑒意義的結(jié)論。在測(cè)量手段改善方面,提出了雷達(dá)目標(biāo)姿態(tài)角興趣區(qū)的概念及解算方法,使通過(guò)靜態(tài)測(cè)量描述目標(biāo)動(dòng)態(tài)特性成為可能,在保證數(shù)據(jù)動(dòng)態(tài)特性的同時(shí)降低了測(cè)量成本。本文利用仿真手段研究雷達(dá)目標(biāo)動(dòng)態(tài)RCS特性對(duì)探測(cè)的影響有助于評(píng)估雷達(dá)探測(cè)系統(tǒng)的真實(shí)作戰(zhàn)性能,并對(duì)目標(biāo)外形與雷達(dá)系統(tǒng)設(shè)計(jì)具有重要的指導(dǎo)意義。
[Abstract]:Radar Cross Security (RCS) is the most important and basic physical parameter in the feature information of radar target. At present, static method is widely used to measure the RCSs, and the measured results can not truly reflect the dynamic characteristics of the target. The reliability of radar system design based on static data is not high. It is necessary to study the influence of radar target dynamic RCS characteristics on detection. In this paper, F-117A is used as the research object. The dynamic and static RCSs are obtained by modeling, and the effect of dynamic and static RCS on the detection performance is compared by the established performance evaluation method of undulating target detection. The specific research contents include three aspects: evaluating the detection performance of undulating targets in a comprehensive way. The existing typical distribution model, This paper introduces the characteristics of the models and their relationship) to test the goodness of fitting results, points out the reasons why the non-parametric method is not suitable for the goodness of fitting test, and explains the principle of selecting the piecewise number. And verify the effect of segment number on the fitting effect.) from the theoretical derivation and approximate calculation of the radar target detection probability solution method is introduced in detail, in the theoretical derivation of the first derivation of the pulse accumulation after 2? The detection probability formula of distributed undulating target is introduced in the approximate calculation. The detection probability approximate fast algorithm of the second-generation undulation model. In the aspect of the influence of RCS on radar detection power, this paper proposes a method to evaluate the difference of dynamic and static RCS to radar detection power by means and fluctuation loss. Compared with the dynamic and static RCS in radar detection power difference, In the aspect of improving the measurement means, the concept and solution method of radar target attitude angle region of interest are put forward, which makes it possible to describe the dynamic characteristics of the target by static measurement. In this paper, the influence of dynamic RCS characteristics of radar targets on detection is studied by means of simulation, which is helpful to evaluate the real combat performance of radar detection system. And it has important guiding significance for the design of target shape and radar system.
【學(xué)位授予單位】：國(guó)防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN957.51

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