【摘要】 【目的】对不同波长下激光的散射光特性进行研究，旨在选择一种能够识别海上舰船尾部留下的尾迹，并对尾流进行追踪的激光器。【方法】选择自由电子激光器（FEL-YBY）作为光源，与传统的选择He-Ne激光器作为光源进行模拟实验对比分析。通过空气压缩机来控制产生的尾流气泡幕，通过改变气压来探究尾流气泡幕的激光散射特性。【结果】通过理论模拟不同波长下的散射光强，发现随着散射角的增加，散射光强在减小，波长短的散射光强要大于波长长的散射光强，且整体振荡相似。通过实验模拟尾流气泡幕对不同波长的散射光强，发现随着压强的增加，散射光强减小，气泡幕的密度增加，同时散射光强的宽度随着压强增大而变宽，波长短的散射光强峰值宽度比波长长的峰值宽度窄。【结论】通过对尾流气泡幕的光散射特性进行研究，可以为舰船尾流的探测、识别及追踪提供一定的参考。更多还原

【Abstract】 [Purposes] This paper studies the characteristics of laser scattering light at different wavelengths 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 intensity decreases, the density of the bubble curtain increases, and the width of the scattered light intensity widens with the increase of pressure. The peak width of the scattered light intensity with short wavelength is narrower than that with large wavelength. [Conclusions] By studying the light scattering characteristics of the wake bubble curtain, this paper can provide some reference for the detection, identification and tracking of the ship wake.更多还原