本文選題：爆炸溫度場(chǎng) + 多光譜測(cè)溫��； 參考：《西安工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著科技的進(jìn)步,許多領(lǐng)域的發(fā)展對(duì)溫度測(cè)量提出了更高要求,從以往的單點(diǎn)溫度測(cè)量逐步過渡到了三維溫度場(chǎng)的測(cè)量,溫度場(chǎng)測(cè)量與武器系統(tǒng)研發(fā)、彈藥毀傷效能、爆炸過程研究及炸藥原材料配比最佳值等都密切相關(guān)。特別是瞬態(tài)高溫場(chǎng)往往具有強(qiáng)破壞力、強(qiáng)電磁干擾、爆炸過程極短、溫度高、溫度動(dòng)態(tài)范圍大等特點(diǎn),因此測(cè)量難度較大,目前尚沒有相應(yīng)的測(cè)試技術(shù)及設(shè)備,本文針對(duì)爆炸溫度場(chǎng)進(jìn)行了三維測(cè)量技術(shù)的研究。針對(duì)爆炸溫度瞬時(shí)性的特點(diǎn),本文提出了一種新的點(diǎn)面結(jié)合測(cè)量三維溫度場(chǎng)的方法,采用硅光電探測(cè)器結(jié)合多光譜測(cè)溫法測(cè)量爆炸真溫以及光譜發(fā)射率,實(shí)現(xiàn)溫度場(chǎng)的單點(diǎn)溫度測(cè)量。結(jié)合面陣CCD由靶面輸出響應(yīng)得出單一方向上的二維溫度分布,以爆源為中心采用三個(gè)測(cè)量方向均布的方法得出三個(gè)方向上的二維溫度分布,研究基于三個(gè)方向上的二維溫度分布重建溫度場(chǎng)的方法。本文建立由點(diǎn)溫度到面溫度的數(shù)學(xué)模型,其中包括大氣光譜透過率及CCD光譜響應(yīng)曲線的測(cè)量。首先用MODTRAN大氣模擬軟件仿真出大氣光譜透過率曲線,并在標(biāo)定公式的基礎(chǔ)上用光柵單色儀得出CCD光譜響應(yīng)曲線,然后采用最小二乘法對(duì)兩者進(jìn)行曲線擬合分別得出大氣光譜透過率函數(shù)及CCD光譜響應(yīng)函數(shù),建立起二維溫度分布的測(cè)溫模型。其次研究了幾種常用的迭代類重建算法,在此基礎(chǔ)上采用了一種綜合多準(zhǔn)則的迭代重建算法。建立了基于透鏡成像原理的相機(jī)投影模型,并給出了權(quán)重矩陣的計(jì)算方法。利用計(jì)算機(jī)仿真實(shí)驗(yàn)對(duì)所采用的多準(zhǔn)則迭代重建算法與常用重建算法進(jìn)行比較,表明了該算法在物理場(chǎng)的三維重建中有很好的應(yīng)用前景。
[Abstract]:With the development of science and technology, the development of many fields has put forward higher requirements for temperature measurement, from the former single point temperature measurement to three-dimensional temperature field measurement, temperature field measurement and weapon system research and development, ammunition damage effectiveness, The study of explosion process and the optimum ratio of explosive raw materials are closely related. Especially, the transient high temperature field often has the characteristics of strong destructive power, strong electromagnetic interference, short explosion process, high temperature and large dynamic range of temperature, so it is difficult to measure, and there is no corresponding testing technology and equipment at present. In this paper, the three-dimensional measurement technology of explosion temperature field is studied. According to the characteristics of instantaneous explosion temperature, a new method of measuring 3D temperature field with point-surface combination is proposed in this paper. The real temperature and spectral emissivity of explosion are measured by silicon photodetector combined with multispectral thermometry. The single point temperature measurement of temperature field is realized. The two-dimensional temperature distribution in a single direction is obtained by combining the output response of a plane array CCD from the target surface, and the two-dimensional temperature distribution in three directions is obtained by using the method of uniform distribution of the three measuring directions with the explosion source as the center. The method of reconstructing temperature field based on two-dimensional temperature distribution in three directions is studied. In this paper, a mathematical model from point temperature to surface temperature is established, including the measurement of atmospheric spectral transmittance and CCD spectral response curve. Firstly, the atmospheric spectral transmittance curve is simulated by MODTRAN atmospheric simulation software, and the CCD spectral response curve is obtained by grating Monochromator on the basis of calibration formula. Then the least square method is used to fit the curves of the two methods, and the atmospheric spectral transmittance function and the CCD spectral response function are obtained, respectively, and the temperature measurement model of two-dimensional temperature distribution is established. Secondly, several commonly used iterative class reconstruction algorithms are studied, and an iterative reconstruction algorithm which synthesizes multiple criteria is adopted. The camera projection model based on lens imaging principle is established, and the calculation method of weight matrix is given. The multi-criteria iterative reconstruction algorithm is compared with the commonly used reconstruction algorithm by computer simulation, which shows that the algorithm has a good application prospect in the three-dimensional reconstruction of physical field.
【學(xué)位授予單位】：西安工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TJ410.6;TP391.41

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 鄭錦坤;白永林;王博;劉百玉;楊文正;白曉紅;秦君軍;趙軍平;緱永勝;劉輝;;炸藥爆轟瞬時(shí)溫度的實(shí)時(shí)測(cè)量[J];光譜學(xué)與光譜分析;2011年11期

2 孫曉剛;原桂彬;戴景民;;基于遺傳神經(jīng)網(wǎng)絡(luò)的多光譜輻射測(cè)溫法[J];光譜學(xué)與光譜分析;2007年02期

3 張斌;宋e，

本文編號(hào)：2084200