准确地转换陆地表面反射率以用于基于无人机的多光谱遥感图像,使用太阳辐射组分分离方法
Huasheng Sun1, Lei Guo1, Yuan Zhang2
1Shandong Provincial Key Laboratory of Soil and Water Conservation and Environmental Protection, School of Resources and Environment, Linyi University, Linyi 276000, China.
Sensors (Basel, Switzerland)
|April 26, 2025
概括
这项研究引入了一种新方法,用于使用无人机远程传感精确地进行陆地表面反射率转换. 这种新技术提高了准确性,即使在复杂的条件下,也有利于定量遥感应用.
科学领域:
- 遥感 遥感 遥感 遥感
- 地质物理学 地质物理学
- 光学是什么?光学是什么?光学是什么?
背景情况:
- 陆地表面反射对于定量遥感至关重要.
- 目前基于无人机 (无人机) 的反射率转换方法在准确性和操作复杂性方面存在局限性.
研究的目的:
- 开发和验证一种用于准确地表反射率转换的新方法.
- 解决现有的无人机遥感技术的局限性.
主要方法:
- 一个自主开发的多角度光强度装置被用来数学分离直接和散射辐射.
- 该方法在六种典型的土地覆盖类型上进行了测试:湖水,石板,灌木,绿草,红草和干草.
主要成果:
- 提出的方法在变化的照明和组件的复杂条件下表现出强大的适应性和准确性.
- 在五个多谱频段中,绿草显示出最高的误差 (1.59% MAE).
- 红色带表现出所有土地覆盖类型中最高的平均绝对误差 (MAE) 为1.01%.
结论:
- 开发的陆地表面反射率转换方法提供了高精度.
- 结果为基于无人机的多谱数据和未来无人机设计的定量遥感提供了有价值的参考.
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