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一、激光水下传输的衰减特性 光束在水中传播时,辐射能量受到水介质的影响而衰减。光的衰减是由散射和吸收这两种过程引起的,可用下列关系式表示; 式中α_λ是总衰减系数,α_λ是吸收系数,S_λ是散射系数。下标“λ”表示它们是入射光波长的函数。 准值单色光束在宏观均匀水介质中传播时,如不计多重散射的影响,其传播特性遵从
First, the attenuation characteristics of laser underwater transmission When the beam propagates in the water, the radiation energy is attenuated by the influence of the aqueous medium. Light attenuation is caused by the scattering and absorption of these two processes can be expressed by the following relationship; where α_λ is the total attenuation coefficient, α_λ is the absorption coefficient, S_λ is the scattering coefficient. The subscripts “λ” indicate that they are a function of the wavelength of the incident light. When the quasi-value monochromatic beam propagates in a macroscopic homogeneous aqueous medium, the propagation characteristics of the quasi-value monochromatic beam, irrespective of the effects of multiple scattering,