三维折射模型用于大气缓解的距离和垂直角度测量
Raquel Luján1, Luis García-Asenjo1, Sergio Baselga1
1Department of Cartographic Engineering, Geodesy and Photogrammetry, Universitat Politècnica de València, Camino de Vera s/n, 46022 Valencia, Spain.
Sensors (Basel, Switzerland)
|April 12, 2025
概括
大气折射会影响地质测量. 一个新的3D-RM模型通过整合气象和地形数据来提高距离和角度的精度,提供灵活和成本效益的解决方案.
科学领域:
- 地质测量和地质数学
- 大气物理学 大气物理学
- 测量技术 测量技术 测量技术
背景情况:
- 大气折射显著降低了电光测量仪器的精度.
- 标准方法很难完全弥补大气对距离和角度测量的影响.
研究的目的:
- 引入和验证一个新的3D折射模型 (3D-RM) 以减轻大气折射误差.
- 为了提高露天距离和垂直角度测量的精度.
主要方法:
- 3D-RM集成了现场气象数据,数字地形模型 (DTM) 信息和ERA5感知热流数据.
- 它使用流转移模型 (TTM) 来估计多个高度水平的垂直折射率梯度.
- 该模型在两个现场活动中使用总站观测结果进行了验证.
主要成果:
- 应用3D-RM用于距离校正,与仅依赖站天气数据的标准方法相比,显示出更高的准确性.
- 一种变体 (3D-RM2) 显示,即使没有现场气象传感器,也可以实现准确的校正,从而提高了模型的灵活性.
- 该模型为大气折射提供了具有成本效益和可实施的校正.
结论:
- 3D-RM在纠正大气折射以进行地质测量方面取得了重大进展.
- 它的灵活性和成本效益使其成为现有更复杂的方法的可行替代方案.
- 该模型提高了在户外环境中的地质调查的可靠性.
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