Study on Light Scattering Characteristics of Wake Bubble Film
[Purposes]This paper studies the characteristics of laser scattering light at different wave-lengths to select a laser that can identify the wake left by the tail of the ship at sea and track the wake.[Methods]The simulation experiment was made to make a comparative analysis between the light source of the free electron laser(FEL-YBY)and the light source of the traditional He-Ne laser.The generated wake bubble curtain is controlled by an air compressor,and the laser scattering characteristics of the wake bubble curtain are explored by changing the air pressure.[Findings]The scattered light intensity at different wavelengths is simulated theoretically.With the increase of scattering angle,the scattered light intensity decreases.The scattered light with short wavelength is stronger than the scattered light with long wave,and the overall oscillation is similar.With the increase of pressure,the scattered light in-tensity decreases,the density of the bubble curtain increases,and the width of the scattered light inten-sity widens with the increase of pressure.The peak width of the scattered light intensity with short wave-length is narrower than that with large wavelength.[Conclusions]By studying the light scattering charac-teristics of the wake bubble curtain,this paper can provide some reference for the detection,identifica-tion and tracking of the ship wake.
Mie scattering theorywake bubble filmbubble film density
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