三维非均匀散射层与其中异常目标的辐射传输

Scattering and emission from inhomogeneous vegetation canopy and alien target by using three-dimensional vector radiative transfer (3D-VRT) equation

讨论了三维非均匀散射层与其中有异常目标的矢量辐射传输高阶散射与辐射的求解与数值模拟。将三维非均匀散射介质在垂直方位z轴方向划分成许多薄层 ,再在水平 (x ,y)方位上划分成方格 ,用分割形成的各薄盒的零阶热辐射和一阶Mueller矩阵解 ,推导多阶辐射传输的迭代方法 ,获得整个散射介质三维VRT方程的高阶散射与辐射解。

To solve 3D-VRT equation for the model of spatially inhomogeneous scatter media, the finite enclosure of the scatter media is geometrically divided, in both the vertical z and horizontal (x, y) directions, to form very thin multi-boxes. The zero-th order emission, first-order Mueller matrix of each thin box and an iterative approach of high-order radiative transfer are applied to deriving high-order scattering and emission of whole inhomogeneous scatter media. Numerical results of polarized brightness temperature at microwave frequency and under different radiometer's resolutions from inhomogeneous scatter model such as vegetation canopy and embedded alien target are simulated and discussed.