| 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. |
