一个改进的度方程和一个全球的格列距离坐标系统
1Nevada Bureau of Mines and Geology, University of Nevada, 1664 N Virginia St, MS 178, Reno, NV 89557 USA.
概括
这项研究引入了坐标时间序列计算中的两个创新:高精度的非代转换从地球中心的笛卡尔坐标到传统的地质坐标和全球格列距离系统. 网格距离系统增强了地理测量数据分析和历史重建.
科学领域:
- 地测和地球物理学的地质学.
- 地测坐标系统是指地质坐标系统.
- 时间序列分析时间序列分析
背景情况:
- 传统的地理坐标转换可能是代性的,缺乏全球一致性.
- 目前用于转换地球中心卡特西安 (GC) 和常规地质测量 (CG) 坐标之间的现有方法的准确性有限.
- 顶点中心卡特西安 (TC) 坐标虽然在本地有用,但在没有任意参考点的情况下不能在全球范围内适用.
研究的目的:
- 提出一种改进的,非代的方法,用于从地球中心的卡特西安 (x, y, z) 坐标计算传统的地理坐标 (度,经度,高度).
- 引入全球格力距离 (GD) 坐标系统用于地理测量时间序列分析,比托波中心卡特西安 (TC) 坐标具有优势.
- 为了提高地理测量时间序列数据的准确性,全球适用性和实用性.
主要方法:
- 开发了一种非代算法,用于精确地转换地球中心卡特西安 (GC) 和传统地质测量 (CG) 坐标系统.
- 通过转换CG时间序列,制定了一个格子距离 (GD) 坐标系统,确保全球适用性.
- 利用GD坐标分析历史地测站数据,包括解决命名不一致性和改进站点联系分析.
主要成果:
- 在GC到CG坐标转换中,在高度<500公里和度<10^-15 rad时达到1纳米的精度,显著优于现有的非代方法.
- 证明了GD系统的全球性,消除了对每个站点任意GC参考坐标的需求.
- 展示了GD时间序列在解决历史站命名和基准差异方面的实用性,有助于参考框架完整性.
- GD 时间序列与TC 时间序列非常相似,其速率约为0.01 mm/yr,允许互换使用.
结论:
- 新的非代GC到CG计算为地质测量和空间应用提供了前所未有的准确性.
- 网格距离 (GD) 系统为地理测量时间序列分析提供了一个全球一致和实用的框架,改进了数据管理和解释.
- GD坐标有助于准确的历史数据重建和本地站点链接分析,这对于保持地面参考框架完整性至关重要.
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