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针对机载激光入射海面时散射光强的复杂不确定性,对海面散射光场强度空间分布的理论模型进行了修正和完善,重点分析了入射角与散射角的几何条件的变化对散射光强的影响。通过仿真与实验分析,发现当入射光从0度变化到53度时,散射光强随入射角的增加而减弱;当入射角从53度变化到90度时,散射光随入射角的增大而增大。实验所测量出的散射光强与仿真数据相对误差基本控制在5%以内,具有很好的符合程度,实测结果验证了所建模型的实效性。最后,建立了波能谱的海浪数学模型,对探测效率进行了评估,为进一步研究机载激光探测水下目标提供理论依据。
Aiming at the complex uncertainty of light intensity when airborne laser incident on the sea surface, the theoretical model of the spatial distribution of light field intensity on the sea surface is modified and perfected. The changes of the geometrical conditions of incident angle and scattering angle are mainly analyzed. Impact. Through the simulation and experimental analysis, it is found that when the incident light changes from 0 degree to 53 degree, the scattered light intensity decreases with the increase of incident angle. When the incident angle changes from 53 to 90 degrees, the scattered light increases with the incident angle Increase. The relative error between the scattered light intensity and the simulation data measured in the experiment is basically controlled within 5%, which is in good agreement with the measured data. The measured results verify the effectiveness of the model. Finally, the wave mathematical model of wave energy spectrum is established, the detection efficiency is evaluated, which provides a theoretical basis for further research on underwater laser detection of airborne targets.