Peng Yuan, Liu Ji, Yuan Tao, Wu Jinhui
Opt Express. 2023 Dec 4;31(25):42271-42284. doi: 10.1364/OE.509865.
Frequent fog and dynamic wind speeds in the ocean significantly impact the radiation transmittance and reflectance on the sea surface, substantially challenging remote sensing and target detection in marine environments. Establishing a model to study the radiative transfer more accurately in ocean-sea fog systems under dynamic wind speed conditions is crucial. Here, a multichannel Monte Carlo (Mc-MC) model is introduced to investigate radiative transfer in ocean-fog systems, which is more realistic and has greater potential than the traditional MC (Tra-MC) approach. Addressing the challenges of dynamic wind speed, this paper introduces two specialized dynamic wind speed models. One prioritized the accurate simulation of changing sea surface wind speeds, and we investigated the transmittance and reflectance of six regions in the Pacific and Atlantic Oceans under this model. The other is proposed for investigating the effect of dynamic wind speed on radiative transfer. The experimental results indicate that an increase in the wind speed dynamic factor accelerates the rate of wind speed changes, thereby intensifying the instability of the radiative transfer transmittance and reflectance. In addition, the light around both the 1 µm and 2 µm wavelengths exhibit high transmittance, but the light surrounding 1 µm has relatively weaker stability compared to that surrounding 2 µm. These investigations provide valuable insights for infrared remote sensing, target detection, and the development of light sources suitable for marine applications.
海洋中频繁出现的雾和动态风速会显著影响海面的辐射透射率和反射率,给海洋环境中的遥感和目标探测带来极大挑战。建立一个模型来更准确地研究动态风速条件下海洋海雾系统中的辐射传输至关重要。在此,引入了一种多通道蒙特卡罗(Mc - MC)模型来研究海洋雾系统中的辐射传输,该模型比传统的蒙特卡罗(Tra - MC)方法更具现实性和潜力。针对动态风速的挑战,本文介绍了两种专门的动态风速模型。一种模型优先考虑对变化的海面风速进行精确模拟,我们在此模型下研究了太平洋和大西洋六个区域的透射率和反射率。另一种模型是为研究动态风速对辐射传输的影响而提出的。实验结果表明,风速动态因子的增加会加速风速变化率,从而加剧辐射传输透射率和反射率的不稳定性。此外,1 µm和2 µm波长附近的光具有较高的透射率,但1 µm波长附近的光稳定性相对低于2 µm波长附近的光。这些研究为红外遥感、目标探测以及适用于海洋应用的光源开发提供了有价值的见解。