【作者】 陈鑫；

【导师】 刘科祥；

【作者基本信息】 西安电子科技大学 ， 光学， 2020， 硕士

【摘要】 光电制导武器在现代战争中的主导作用日益稳固,推进剂作为武器发动机的主要能源供给,其燃烧产生的烟雾特性会影响制导武器的制导信号传输,同时还会暴露导弹自身的运行轨迹,因此对于羽烟遮蔽性能的研究显得十分重要。基于图像的二次羽烟透过率检测方法可全面直观的分析羽烟场的遮蔽性,克服了基于光检测方法的随机性问题。本文主要在分析各种羽烟检测方法的基础上对基于视频图像的二次羽烟透过率检测系统进行了深入研究,对原检测系统进行优化改进。针对传统标定方法的受环境影响,标定结果不准确问题,本文设计了新的衰减片组,并采用新的标定曲线方法对标定曲线进行验证与优化;针对烟雾区域识别不准确问题,本文采用了新的边缘检测技术对烟雾区域完成精准定位,同时用手动选取靶板区域的技术代替图像算法选取技术,克服了外场环境因素带来的定位不准确问题,完成对有效区域的精确识别;还增加了烟雾面积计算技术,可全面表征羽烟遮蔽性;同时对背景靶板参数进行优化。本文的优化方法增强了系统的稳定性和精确性,还增加了实验数据的完整性。本文还对羽烟透过率检测系统在外场实验中获得的透过率和烟雾面积数据进行分析,研究影响羽烟透过率变化的具体因素,分析羽烟分布特征,并完成理论验证。该数据分析对羽烟透过率变化的研究提供了相应的数据支持与理论基础,有利于烟雾遮蔽特性的进一步研究。综上所述,改进后的基于视频图像的二次羽烟透过率检测系统准确性更好,同时结合系统实验数据分析,研究影响羽烟透过率变化的相关因素,为评估和研究我国光电制导武器的推进剂配方优劣性提供支持。更多还原

【Abstract】 The leading role of photoelectric guided weapons in modern warfare is becoming more and more stable.As the main energy supply of weapon engines,the smoke characteristics generated by the combustion of propellants will affect the guidance signal transmission of guided weapons,and also expose the trajectory of the missile itself.Therefore,it is very important to study the performance of plume shielding.The image-based secondary plume transmittance detection method can comprehensively and intuitively analyze the obscuration of plume field and overcome the randomness of light detection method.In this paper,based on the analysis of various plume detection methods,the secondary plume transmittance detection system based on video image is studied deeply,and the original detection system is optimized and improved.Aiming at the problem that the traditional calibration method is affected by the environment and the calibration result is inaccurate,a new set of attenuators is designed,and the calibration curve is verified and optimized by the new calibration curve method;Aiming at the problem of inaccurate recognition of smoke area,this paper uses a new edge detection technology to locate the smoke area accurately,and uses the technology of manually selecting the target area instead of the image algorithm selection technology,It overcomes the location inaccuracy caused by the external environment factors,completes the accurate identification of the effective area,and adds the calculation technology of smoke area,which can fully characterize the plume obscuration,and optimizes the parameters of the background target plate.The optimization method in this paper enhances the stability and accuracy of the system,and also increases the integrity of experimental data.This paper also analyzes the data of transmittance and smoke area obtained from the field experiment of the plume transmittance detection system,studies the specific factors affecting the change of the plume transmittance,analyzes the distribution characteristics of the plume,and completes the theoretical verification.This data analysis provides the corresponding data support and theoretical basis for the study of the change of the transmittance of plume,which is conducive to the further study of the smoke obscuration characteristics.To sum up,the improved secondary plume transmittance detection system based on video image has better accuracy.At the same time,combined with the system experimental data analysis,the relevant factors affecting the change of plume transmittance are studied to provide support for the evaluation and research of the propellant formulation of China’s photoelectric guidance weapons.更多还原