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碎形二尺度方法用于计算青路面的激光散射分布

Tao Yang, Jiancheng Lai, Wei Yan

|June 29, 2023

概括

一种新的碎形双尺度方法 (FTSM) 准确地模拟了青路面上的激光散射. 这种方法优于光学传感器检测性能的传统方法.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
遥感遥感遥感遥感

背景情况:

青路面的激光散射会影响光学传感器的性能,比如激光雷达.
传统的散射模型由于激光波长和路面粗度之间的不匹配而失败.

研究的目的:

开发一种准确和有效的方法来计算青路面上的激光散射分布.
为了解决现有的分析近似模型的局限性.

主要方法:

提出了利用路面形状的自我相似性来利用 Fractal Two-Scale Method (FTSM) 的方法.
使用蒙特卡洛方法模拟双向散射强度分布 (SID).
设计并使用激光散射测量系统进行实验验证.

主要成果:

FTSM的结果与s光和p光的实验测量密切匹配.
与传统的分析和基尔霍夫近似模型相比,该方法显示出更高的准确性和速度.
在不同粗度的青路面上验证的FTSM (σ=0.34毫米,1.74毫米,3.08毫米).

结论:

FTSM提供了一种更准确,更有效的方法来建模青路面上的激光散射.
这种方法提高了光学传感器在路面相关应用中的性能预测.
基于碎形的方法有效地克服了传统散射模型的局限性.

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