三维瞬态偏振辐射传输研究

3D Transient Radiative Transfer Considering Polarization

瞬态偏振辐射的探测与分析在距离选通成像、光学遥感等领域有着重要的应用。本文构建了一个三维多层散射性介质模型,并采用蒙特卡洛法研究瞬态偏振辐射在其中的传输规律。推导并总结了偏振辐射在三维空间界面处的反射和折射公式。通过与一维多层半透明模型计算结果进行对比,验证了该模型的正确性,并给出了短脉冲激光在该模型中传输的算例。

Transient radiative transfer considering polarization has wide applications in many fields, such as range-gated imaging and optically remote sensing. In this paper, a 3D multilayer model of scattering medium is constructed, and a Monte Carlo method for solving the radiative transfer in this model considering both the polarization and the transient effect is developed. The rules of reflection and refraction taking place at 3D space interfaces for polarized radiation are given. The correctness of the 3D model is validated by comparing with 1D model. A simulation for a short pulse transfer in this model is presented.