标题： 散斑图案和二维空间模型 显示英文标题

标题： Speckle Patterns and 2-Dimensional Spatial Models

摘要： 基于包含最近邻相互作用的线性模型，对斑点强度图案进行二维高斯格点拟合的结果如图所示。 我们还包含了对同一空间斑点图案的蒙特卡洛模拟，并考虑了最近邻相互作用。 这些最近邻相互作用在格点上导致了空间方差结构。 结果的空间模式在每个点之间的值波动方式具有平稳随机过程的特征。 模拟中格点上的值被解释为强度级别，相邻单元中的值差异在格点上产生波动的强度模式。 改变网格的大小会改变斑点的相对大小。 增加网格尺寸倾向于在平稳过程的均值方向上平均强度。 显示英文摘要

摘要： The result of 2-dimensional Gaussian lattice fit to a speckle intensity pattern based on a linear model that includes nearest-neighbor interactions is presented. We also include a Monte Carlo simulation of the same spatial speckle pattern that takes the nearest-neighbor interactions into account. These nearest-neighbor interactions lead to a spatial variance structure on the lattice. The resulting spatial pattern fluctuates in value from point to point in a manner characteristic of a stationary stochastic process. The value at a lattice point in the simulation is interpreted as an inten-sity level and the difference in values in neighboring cells produces a fluctuating intensity pattern on the lattice. Changing the size of the mesh changes the relative size of the speckles. Increasing the mesh size tends to average out the intensity in the direction of the mean of the stationary process.