Design And Characteristic Analysis Of Light Source For Underwater Detecting

The underwater detection light screen is mainly used to measure the external ballistic parameters of underwater weapons.But in the process of use,there are some problems,such as the effective light screen surface of underwater detection is too small and its accuracy is not high,and the light transmission under water is affected by its environment.In order to solve the above problems,the technology of underwater detection light screen is studied.The underwater optical transmission model is established,and the source of underwater detection light screen is designed and its characteristics are analyzed.The main research contents are as follows:1)The optical transmission characteristics of underwater detection screen are studied,and the underwater optical transmission model is constructed by Monte Carlo method.The underwater optical transmission with different attenuation coefficient,initial power and transmission distances are simulated and analyzed.It is found that under a single variable,the larger the attenuation coefficient,the larger the transmission distance,the smaller the optical transmission rate is,and the less the initial power will affect the optical transmission rate.2)The light source of underwater detection screen is designed.Referring to the size of light source of small light screen target on land,the characteristics of LED light source and laser light source are analyzed and compared.It shows that laser light source is more suitable for the underwater detection screen light source.The waterproofing structure of the light source and receiver of the underwater detection screen are designed.The structure of the light source end and the receiver end shell are designed integratedly,and the waterproofing performance of the shell can reach IP7 level by testing in the laboratory.3)A large number of experiments and measurements have been carried out by using laser power meter,and the test results of different initial power and transmission distance are analyzed to verify the feasibility and accuracy of the model of underwater detection screen light transmission.In this paper,the light transmission model of underwater detection screen technology is constructed,and the light source is designed and characteristics of underwater detection screen are analyzed,besides,the waterproofing structure is designed and verificated by experiment.which lays a theoretical foundation and technical reference for the engineering design of underwater light screen target.