论文标题
非kolmogorov湍流中飞机波传播的波光学模拟的限制
Limits on Wave Optics Simulations of Plane Wave Propagation in Non-Kolmogorov Turbulence
论文作者
论文摘要
我们通过使用拆分步骤方法和薄相屏幕来得出平面波传播的波光学模拟的限制。这些限制用于告知两个模拟运动，其中各种非科尔莫戈罗夫幂律的量湍流强度与归一化强度差异之间的关系之间的关系。我们发现，当模拟侧长采样率为8192时，较小功率定律的模拟是有限的湍流强度，而RYTOV的模拟为7。在这些相同的条件下，可以将量湍流强度模拟为Kolmogorov Powerlaw的Rytov数量为12个，并且更高。我们表明，峰值闪烁发生的峰值闪烁和RYTOV数量随幂律单调而增加。同样，如果湍流强度是固定的，闪烁指数和幂律之间的关系取决于操作方案。在微弱的湍流中，关系为负，并且在湍流中是积极的。这项工作还强调了正确扩展湍流强度的重要性，并将结果与不同的幂律进行比较，以及在这些模拟中定义内部和外部尺度的影响和重要性。
We derive limits for wave optics simulations of plane wave propagation in non-Kolmogorov turbulence using the split-step method and thin phase screens. These limits are used to inform two simulation campaigns where the relationship between volume turbulence strength and normalized intensity variance for various non-Kolmogorov power-laws. We find that simulations of smaller power laws are limited turbulence strengths with Rytov numbers of 7 when the simulation side-length sampling rate is 8192. Under these same conditions it is possible to simulate volume turbulence strength out to Rytov numbers of 12 for Kolmogorov power-laws and higher. We show that the peak scintillation and Rytov number where peak scintillation occur increases monotonically with power-law. Also, that if turbulence strength is fixed, the relationship between scintillation index and power-law depends on the operating regime. In weak turbulence the relationship is negative, and it is positive in stronger turbulence. This work also emphasizes the importance of properly scaling turbulence strength with comparing results with different power-laws and the influence and importance of defining inner and outer scales in these simulations.
