He Si, Wang Xia, Xia Runqiu, Jin Weiqi, Liang Jian'an
Appl Opt. 2018 Mar 1;57(7):B150-B159. doi: 10.1364/AO.57.00B150.
A novel method to simulate the polarimetric infrared imaging of a synthetic sea surface with atmospheric Mie scattering effects is presented. The infrared emission, multiple reflections, and infrared polarization of the sea surface and the Mie scattering of aerosols are all included for the first time. At first, a new approach to retrieving the radiative characteristics of a wind-roughened sea surface is introduced. A two-scale method of sea surface realization and the inverse ray tracing of light transfer calculation are combined and executed simultaneously, decreasing the consumption of time and memory dramatically. Then the scattering process that the infrared light emits from the sea surface and propagates in the aerosol particles is simulated with a polarized light Monte Carlo model. Transformations of the polarization state of the light are calculated with the Mie theory. Finally, the polarimetric infrared images of the sea surface of different environmental conditions and detection parameters are generated based on the scattered light detected by the infrared imaging polarimeter. The results of simulation examples show that our polarimetric infrared imaging simulation can be applied to predict the infrared polarization characteristics of the sea surface, model the oceanic scene, and guide the detection in the oceanic environment.
提出了一种模拟具有大气米氏散射效应的合成海面偏振红外成像的新方法。首次将海面的红外发射、多次反射、红外偏振以及气溶胶的米氏散射都考虑在内。首先，引入一种新的方法来反演风致粗糙海面的辐射特性。将海面实现的双尺度方法与光传输计算的反向光线追踪相结合并同时执行，显著减少了时间和内存消耗。然后，利用偏振光蒙特卡罗模型模拟红外光从海面发射并在气溶胶粒子中传播的散射过程。根据米氏理论计算光的偏振态变换。最后，基于红外成像偏振仪检测到的散射光，生成不同环境条件和探测参数下海面的偏振红外图像。模拟实例结果表明，我们的偏振红外成像模拟可用于预测海面的红外偏振特性、对海洋场景进行建模以及指导海洋环境中的探测。
