本文選題：偏振特性 + 散射特性　； 參考：《長春理工大學(xué)》2017年碩士論文

【摘要】：目標(biāo)散射特性的研究是材質(zhì)識別和探測的基礎(chǔ),對于低反射人工微結(jié)構(gòu)材料,根據(jù)雙向反射分布函數(shù)(BRDF)和偏振度的基本理論,建立散射特性的研究方案,并搭建了人工微結(jié)構(gòu)材料在激光照明條件下的測量系統(tǒng)。本文選用黑硅和黑金屬鋁為被測材料,測量了材料表面散射光的散射場分布和偏振特性,同時(shí)又分析了不同微結(jié)構(gòu)產(chǎn)生偏振波動的機(jī)理,從而實(shí)現(xiàn)對黑硅和黑金屬鋁的鑒別和區(qū)分。本文結(jié)果表明,微結(jié)構(gòu)材料表面散射光的散射場分布雖然與隨機(jī)粗糙表面的散射場分布有較大的不同,其BRDF值隨著測量參量的變化而變化,但不同的微結(jié)構(gòu)材料的散射場分布相似,且反射值較低。反之,對于不同的微結(jié)構(gòu)材料表面散射光的偏振能力在數(shù)值和分布上均具有明顯的差異性。散射光的偏振曲線隨著入射角和接收角的改變而產(chǎn)生變化,同時(shí)出現(xiàn)波峰和波谷,其幅度存在差別,并且黑金屬鋁的偏振能力強(qiáng)于黑硅,表現(xiàn)兩種微結(jié)構(gòu)材料的差異性。本文結(jié)果為人工微結(jié)構(gòu)材料的探測與識別研究提供一定的理論和實(shí)驗(yàn)依據(jù),同時(shí)也可對人工微結(jié)構(gòu)材料在隱身、探測等領(lǐng)域中的應(yīng)用提供一定參考。
[Abstract]:The study of scattering characteristics of targets is the basis of material identification and detection. According to the basic theory of bi-directional reflectance distribution function (BRDF) and degree of polarization, the research scheme of scattering characteristics is established for low reflectance artificial microstructure materials, which is based on the theory of bidirectional reflectance distribution function (BRDF) and degree of polarization. The measurement system of artificial micro-structured materials under laser illumination is also built. In this paper, the scattering field distribution and polarization characteristics of scattering light on the surface of black silicon and black metal aluminum are measured, and the mechanism of polarization fluctuation in different microstructure is analyzed. Thus, the identification and differentiation of black silicon and black metal aluminum can be realized. The results show that the distribution of scattering field on the surface of microstructured materials is different from that of random rough surface, and the BRDF value varies with the change of measurement parameters. However, the scattering field distribution of different microstructures is similar and the reflection value is low. On the contrary, the polarization ability of scattering light on the surface of different microstructure materials has obvious difference in numerical value and distribution. The polarization curve of scattered light varies with the change of incident angle and receiving angle, and the amplitude of wave peak and trough is different. The polarization ability of black aluminum is stronger than that of black silicon, which shows the difference between the two kinds of microstructural materials. The results of this paper provide a certain theoretical and experimental basis for the detection and identification of artificial microstructural materials, and can also provide a certain reference for the applications of artificial microstructural materials in the field of stealth, detection and other fields.
【學(xué)位授予單位】：長春理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN249;O436.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 高寵;張京國;李U，

本文編號：2077951