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在分离反射元件中进行光谱极极度测量的可行性,以改善水污染物的确定

Ahmad Shaqeer Mohamed Thaheer¹, Yukihiro Takahashi¹

¹Department of Cosmosciences, Faculty of Science, Hokkaido University, Sapporo 060-0810, Japan.

The Science of the total environment

|November 17, 2024

概括

这项研究引入了一种新的远程传感方法,用于使用光谱反射和偏振来监测水质. 该技术有效地区分叶绿素和悬浮沉积物,即使在波浪条件下,提高精度.

科学领域:

环境科学环境科学
遥感遥感遥感遥感
光学海洋学是指光学海洋学

背景情况:

水体面临着来自人类活动的越来越多的威胁,需要先进的监测技术.
由于自然水系统的区域变化,现场测量不足.
现有的遥感方法往往忽略了受太阳辐射和波浪强度影响的表面光组件的影响.

研究的目的:

开发和验证使用光谱反射和极化监测水质的遥感方法.
研究波浪条件对水污染物的光谱特征的影响.
使用光学特性来区分叶绿素和悬浮沉积物.

主要方法:

在模拟波形条件下,使用带有偏振过器的线谱仪进行了超光谱测量.
在不同度下模拟了 (Chl) 和悬浮沉积物 (SS).
分析涉及计算污染物反射率,偏振元件 (皮克林方法,斯托克斯向量),规范化,连续移除,光谱角度映射器 (SAM) 和光谱.

主要成果:

在波浪条件下,Chl和SS反射率的极化成分在波浪条件下增加,特别是在较低的波长下.
更高的污染物度显示出更大的光谱相似性,较低的SAM值表明光谱反射减少.
线性极化程度 (DoLP) 分析显示,Chl的DoLP低于SS,而波浪条件增强了DoLP.

结论:

开发的方法有效地分离了用于水质监测的反射元件.
该技术对测量条件敏感,需要考虑角度和水面状态.
考虑波浪效应和视角对于准确估计水体中的污染物至关重要.

关键词:

超频谱的超频谱的两极化的偏化反射力反射力是一种反射力.水污染物的水污染物.

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