利用三波长后向散射测量检测道路上黑冰的方法。

Method for black ice detection on roads using tri-wavelength backscattering measurements.

作者信息

Ma Xinxu, Ruan Chi

出版信息

Appl Opt. 2020 Aug 20;59(24):7242-7246. doi: 10.1364/AO.398772.

Abstract

This paper provides a method of detecting black ice on a road surface by multiwavelength noncontact optical technology. The laser sources, wavelengths of 1310, 1430, and 1550 nm, were irradiated on the road surface. Then, we define the ratio of the backscattering power under a certain condition to the backscattering power under dry conditions as the normalized reflectance. It is found that the normalized reflectance under dry, water, black ice, icy, and snowy conditions is different. Therefore, the normalized reflectance can be used to identify black ice on a road surface.

摘要

本文提供了一种利用多波长非接触光学技术检测路面黑冰的方法。将波长为1310、1430和1550 nm的激光源照射在路面上。然后，我们将特定条件下的后向散射功率与干燥条件下的后向散射功率之比定义为归一化反射率。研究发现，干燥、有水、黑冰、结冰和下雪条件下的归一化反射率各不相同。因此，归一化反射率可用于识别路面上的黑冰。