光学遥感中的邻近效应:对水生高对比度环境的出现,影响和纠正的审查
Victor Lion1, Bastian Robran1, Frederike Kroth1
1Kiel University, Department of Geography, Earth Observation and Modelling, Ludewig-Meyn-Straße 8, Kiel, 24118, Schleswig-Holstein, Germany.
The Science of the total environment
|October 23, 2025
概括
邻近效应 (AE) 通过混合来自周围区域的光来扭曲遥感数据,影响表面反射率和叶绿素-a检索. 这一审查澄清了AE,并评估了水生环境的RAdCor和T-Mart等校正方法.
科学领域:
- 光学远程传感器是一种远程传感器.
- 大气光学是大气光学.
- 环境监测环境监测环境监测
背景情况:
- 邻近效应 (AE) 源于大气散射,导致光学遥感数据中的光谱混合.
- 在异质,高对比度的表面上,AE显著扭曲了目标信号,影响了定量检索.
- 来自AE的错误会影响得出的信息,例如基于像素的素-a度.
研究的目的:
- 为更广泛的受众提高邻近效应研究的可访问性.
- 解释AE在光学遥感中的出现,影响和纠正方法.
- 对水生环境的AE校正算法的最新进展进行审查和评估.
主要方法:
- 文献综述总结了AE的关键进展和纠正方法.
- 对AE校正研究方法的理论和实践评估.
- 在Osterseen湖区应用RAdCor和T-Mart算法的案例研究.
主要成果:
- 在高对比度的环境中,AE会导致表面反射率和叶绿素a检索的重大错误.
- RAdCor和T-Mart显示了AE校正的有希望的结果,特别是在近红外 (NIR) 频谱中.
- 鉴定了当前AE校正方法的局限性,特别是在可见光 (VIS) 频谱和非植被表面.
结论:
- 最近的AE校正算法,如RAdCor和T-Mart提供了运营适用性.
- 未来的研究应该专注于改善可见光光谱中的AE校正.
- 建议将AE校正扩展到没有植被的表面和不同的地理区域.
相关概念视频
Common Leveling Mistakes and Errors
396
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
396
Influence of Earth's Curvature and Atmospheric Refraction on Leveling
873
During leveling, the Earth's curvature and atmospheric refraction introduce deviations in the line of sight from a true horizontal reference. When the line of sight is leveled, it remains perpendicular to the plumb line only at a single point. Beyond this, it deviates due to the Earth’s curvature, represented by the correction C. For a sight distance D, the deviation can be derived using the relationship:This relationship shows that the deviation increases quadratically with distance. Over a...
873
Difference from Background: Limit of Detection
8.0K
The limit of detection (LOD) is the smallest amount of analyte that can be distinguished from the background noise. The LOD value corresponds to the concentration at which the analyte signal is three times larger than the standard deviation of the blank signal. Below this value, the analyte signal cannot be differentiated from the background noise. It is calculated by dividing the calibration slope by 3 times the standard deviation of the blank signals.
The LOD indicates the presence or absence...
The LOD indicates the presence or absence...
8.0K
Design Example: Measuring Distance Between Two Points with Obstructions
388
When measuring distances in areas with physical obstructions, such as a lake in a field, surveyors must employ techniques to calculate accurate lengths without direct line measurements. One effective method is the offset technique, which allows for precise distance estimation over inaccessible stretches.In this scenario, a surveyor must measure a side of an area that crosses a lake. Since the measuring tape cannot span the lake, the surveyor begins by establishing a baseline that aligns with...
388


