非均匀介质内瞬态偏振辐射传递及光学参数重建

本项目以明晰非均匀半透明介质内瞬态偏振辐射传递机制，构建高效、精确、强鲁棒性的光学参数重建新理论为目标，拟对2个关键科学问题开展深入系统的研究，包括：光子传输时间效应、偏振效应与光学界面透反射偏振效应的协同辐射传递规律；基于瞬态矢量辐射传递的多光学参数同时重建技术。.构建捕捉多维光学界面处偏振光子透反射行为的理论模型，提出对Stokes矢量具有精细方向及时间分辨率的数值求解策略，通过数值模拟和实验研究，发现和揭示折射率非均匀效应、非规则形状粒子散射效应、光子传输时间效应及偏振效应协同作用下的独特辐射传递光热现象与效应。考虑介质折射率非均匀分布特性，提出基于瞬态矢量辐射传递的多光学参数同时重建新理论，发展高效、强鲁棒性的重建算法，充分利用探测光子所包含的时间分辨及偏振态信息，提高光学参数重建图像量化度。

Aiming to reveal transient polarized radiative transfer mechanisms in inhomogeneous semi-transparent medium, and build an optical parameter reconstruction theory with high efficiency, precision and strong robustness, this project intends to carry out systematical and in-depth study on two key scientific problems including: the radiative transfer law under the combination action of time and polarization effect of the photon transportation, and transmission and reflection polarization on the optical interface; optical parameter reconstruction technology based on the transient vector radiative transfer.. This project will build the theoretical model to capture the transmission and reflection behavior of the polarized photon on the multi-dimensional optical interface, and put forward a numerical solution strategy to obtain the Stokes vector with high resolution on direction and time. Through numerical simulation and experimental research, this project intends to find and reveal the special radiative transfer phenomenon and effects under the combination action of the inhomogenous effect of the refractive index, scattering effect of the particles with irregular shape, time and polarization effect of photon transmission. Considering inhomogeneous distribution characteristics of the refractive index, a new optical parameters reconstruction theory based on the transient vector radiative transfer is put forward, and an high efficiency, strong robustness reconstruction algorithm is developed. This project tries to make full use of the time resolution and polarization information of the photon detected to improve image quantitative degrees of the reconstructed optical parameters.