本文選題：光電對(duì)抗 + 激光傳輸　； 參考：《哈爾濱工業(yè)大學(xué)》2015年碩士論文

【摘要】：隨著光電成像系統(tǒng)在武器制導(dǎo)、衛(wèi)星偵察、微光夜視等軍事領(lǐng)域的廣泛運(yùn)用,以光電對(duì)抗為背景對(duì)成像系統(tǒng)進(jìn)行干擾與損傷的研究成為了信息作戰(zhàn)的焦點(diǎn)。激光以其強(qiáng)度高、單色性好、準(zhǔn)直性強(qiáng)、反應(yīng)速度快等特點(diǎn),使其極其容易對(duì)光電成像探測(cè)器造成干擾或損傷,而激光在與成像探測(cè)器作用前,需要先通過光學(xué)系統(tǒng)進(jìn)行成像。因此,對(duì)激光經(jīng)光學(xué)系統(tǒng)發(fā)生折射或散射后像面的能量分布進(jìn)行研究有重要意義。本文首先對(duì)激光正入射光學(xué)系統(tǒng)透射后像面的能量分布進(jìn)行了研究。從波動(dòng)光學(xué)的角度推導(dǎo)激光傳輸理論,將Collins衍射積分公式與光學(xué)ABCD矩陣聯(lián)系起來,首先得到復(fù)雜光學(xué)系統(tǒng)的衍射積分公式,推導(dǎo)高斯光束經(jīng)光學(xué)系統(tǒng)后像面的能量分布情況。以3514MM型號(hào)鏡頭為例,計(jì)算了532nm與1064nm激光在與該光學(xué)系統(tǒng)作用距離10m處不同衰減倍率情況下的像面的能量分布信息,討論了此情況下像面的能量對(duì)CCD探測(cè)器的影響。結(jié)果表明,采用激光傳輸理論計(jì)算的532nm與1064nm波段激光經(jīng)光學(xué)系統(tǒng)后像面的能量可以使CCD達(dá)到飽和。其次,對(duì)激光斜入射光學(xué)系統(tǒng)散射后像面的能量分布進(jìn)行了研究。以光束的散射傳輸理論為基礎(chǔ),通過Trace Pro光線追跡軟件,分析激光以不同角度入射光學(xué)系統(tǒng)后像面的能量分布。以3514MM型號(hào)鏡頭為例,獲取其鏡筒內(nèi)壁與光闌的BRDF值,通過數(shù)據(jù)處理以及曲線擬合,得到對(duì)應(yīng)的ABg參數(shù),建立了激光輻照光學(xué)系統(tǒng)的散射分析模型,并對(duì)532nm與1064nm波段激光以不同角度入射光學(xué)系統(tǒng)后像面的能量分布進(jìn)行了光線追跡與分析。最后,為驗(yàn)證理論計(jì)算獲得的像面能量分布精度,進(jìn)行了激光輻照光學(xué)系統(tǒng)物理實(shí)驗(yàn)。采用532nm與1064nm波段激光輻照光學(xué)系統(tǒng),獲得了衰減倍率60d B、90d B下像面能量分布信息。通過對(duì)比分析,提出了加入透過率參數(shù)修正激光傳輸變換理論的思想。此外,本文還對(duì)不同激光入射角度、探測(cè)器不同飽和閾值條件下像面的飽和像元進(jìn)行了仿真與分析,計(jì)算出了不同的飽和閾值對(duì)應(yīng)像面達(dá)到的飽和像元數(shù),并分析了不同激光波段、入射角度、探測(cè)器不同飽和閾值與像面達(dá)到的飽和像元數(shù)之間的關(guān)系。
[Abstract]:With the wide application of photoelectric imaging system in weapon guidance, satellite reconnaissance, night vision and other military fields, the study of interference and damage to imaging system in the background of optoelectronic countermeasure has become the focus of information warfare. Laser has the characteristics of high intensity, good monochromaticity, strong collimation and fast reaction speed, which makes it easy to interfere or damage the photoelectric imaging detector. However, before the laser acts with the imaging detector, it needs to be imaged by optical system. Therefore, it is of great significance to study the energy distribution of the image plane after the laser is refracted or scattered through the optical system. In this paper, the energy distribution of the image plane after the transmission of the laser normal incident optical system is studied. The theory of laser propagation is derived from the viewpoint of wave optics. The diffraction integral formula of Gao Si is connected with the optical ABCD matrix, and the diffraction integral formula of complex optical system is obtained, and the energy distribution of the Gao Si beam passing through the image plane of the optical system is deduced. Taking 3514MM lens as an example, the energy distribution information of the image plane of the 532nm and 1064nm laser at different attenuation rates at 10 m from the optical system is calculated, and the influence of the energy of the image plane on the CCD detector is discussed. The results show that the energy of 532nm and 1064nm laser passing through the optical system can be saturated by using the theory of laser propagation. Secondly, the energy distribution of the image plane after the scattering of laser oblique incident optical system is studied. Based on the theory of beam scattering propagation and trace Pro ray tracing software, the energy distribution of the image plane after the laser incident at different angles is analyzed. Taking 3514MM lens as an example, the BRDF values of the inner wall of the lens tube and the aperture are obtained. Through data processing and curve fitting, the corresponding ABG parameters are obtained, and the scattering analysis model of the laser irradiated optical system is established. The ray tracing and analysis of the energy distribution of the image plane after the 532nm and 1064nm laser incident at different angles are also carried out. Finally, in order to verify the accuracy of image surface energy distribution obtained by theoretical calculation, the physical experiments of laser irradiated optical system are carried out. The energy distribution information of the image plane under the attenuation rate of 60 dB / 90 dB was obtained by using the optical system irradiated by 532nm and 1064nm laser. Through comparison and analysis, the idea of adding transmittance parameters to modify the laser transmission transformation theory is put forward. In addition, the saturated pixels of the image plane under different laser incident angles and detector saturation thresholds are simulated and analyzed, and the number of saturated pixels corresponding to different saturation thresholds is calculated. The relationship between different laser bands, incident angles, detector saturation thresholds and the number of saturated pixels reached in the image plane is analyzed.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN241

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