快门速度影响低成本多谱传感器估计草草 (Cynodon dactylon L.-Poaceae) 在不同太阳辐射条件下的植被活力的能力
Rosa M Martínez-Meroño1, Pedro F Freire-García1, Nicola Furnitto2
1Department of Ecology and Global Change, Desertification Research Centre (CIDE, CSIC-UV-GV), Moncada, 46113 Valencia, Spain.
Sensors (Basel, Switzerland)
|January 10, 2026
概括
快门速度显著影响多光谱图像,特别是高太阳辐射下的绿色反射率和植被指数 (VIs). 优化快门速度对于无人机遥感数据的准确性至关重要.
科学领域:
- 遥感 遥感 遥感 遥感
- 农业科学 农业科学
- 图像处理 图像处理
背景情况:
- 放射测量校准对于使用多光谱图像进行准确的植被分析至关重要.
- 传感器配置,特别是快门速度,极大地影响放射测量校准.
- 低成本的多谱传感器提供了可访问的遥感解决方案,但需要仔细的参数化.
研究的目的:
- 为了评估快门速度对MAPIR Survey3传感器反射率和植被指数 (VIs) 的影响.
- 为了评估在不同太阳辐射条件下对草草的这些影响.
- 为最佳的快门速度设置提供建议.
主要方法:
- 现场活动使用MAPIR Survey3多谱传感器进行.
- 十个不同的快门速度设置被测试在一个均的草草地.
- 在可见和近红外 (NIR) 波段的反射和计算的VI在可变的太阳辐射下进行了分析.
主要成果:
- 绿色光谱区域的反射率与红色和NIR频段相比,对快门速度的灵敏度更高.
- 在高太阳辐射条件下,这种敏感性更明显.
- 使用绿色带计算的植被指数容易受到缓慢的快门速度的工件的影响.
结论:
- 快门速度是一个关键参数,影响多光谱成像中的放射性精度.
- 根据太阳辐射水平,提供了快门速度设置的建议.
- 优化快门速度可以提高来自无人机获取图像的植被分析的可靠性.
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