对果激光雷达和小型空置天线系统的沙和沙丘地形变化测量的比较分析
Brendan M J Burchi1, Ethan J Theuerkauf2
1Department of Geography, Environment, and Spatial Sciences, Michigan State University, 673 Auditorium Road, East Lansing, MI, 48824, USA.
Scientific reports
|June 4, 2024
概括
果激光雷达提供了一种具有成本效益和准确的方法,用于监测沙和沙丘上的沿海地形变化. 这项技术提供了快速的数据收集,有助于积极的沿海管理和弹性.
科学领域:
- 沿海的地形形态.
- 地理空间分析是什么?
- 遥感技术 遥感技术
背景情况:
- 沙和沙丘是动态的沿海环境,容易受到各种环境变化的影响.
- 传统的方法,如小型无人飞机系统 (sUAS) 与结构从运动摄像度 (SfM) 是有效的,但可能是昂贵和物流复杂的.
- 精确监测地形变化对于有效的沿海管理至关重要.
研究的目的:
- 评估果激光雷达的准确性,用于绘制沙和沙丘环境中的地形变化.
- 将果激光雷达的性能与suas-sfm和rtk-gps等高精度方法进行比较.
- 评估果激光雷达对检测随时间推移侵蚀和积累模式的实用性.
主要方法:
- 使用实时运动全球定位系统 (RTK-GPS) 进行精确的高度检查点测量.
- 使用sUAS-SfM和果激光雷达收集海拔数据,并与RTK-GPS检查点进行比较.
- 分析了来自果激光雷达和sUAS-SfM数据的体积变化和侵蚀和积累的空间模式.
主要成果:
- 与RTK-GPS检查站相比,果激光雷达显示的平均高度差异为0.039米.
- sUAS-SfM数据显示,较小的平均高度差异为0.004米.
- 两种方法都检测到类似的地形变化,而果激光雷达捕获了更细微的侵蚀和积累模式.
结论:
- 果激光雷达提供了一种快速而准确的方法来评估沙和前丘系统的地形变化.
- 该技术能够捕捉微小细节的能力支持其在沿海监测中的使用.
- 研究结果表明,果激光雷达可以增强主动和弹性沿海管理策略.
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