相关实验视频
Updated: Jul 11, 2026

09:36
Measurement of Spatial Stability in Precision Grip
Published on: June 4, 2020
概括
全球定位系统 (GPS) 的测量显示出高精度,垂直部件的不确定性在短距离上低至10-20毫米. 即使在较长的矢量上也保持了准确性,证明了GPS在地理测量应用中的可靠性.
科学领域:
- 地质测量是指地质测量.
- 地质物理学 地质物理学
- 卫星导航 卫星导航 卫星导航 卫星导航
背景情况:
- 精确的定位对于各种科学和工程应用至关重要.
- 全球定位系统 (GPS) 技术为地测测量提供了一个强大的工具.
- 了解GPS的准确性和局限性对于可靠的数据解释至关重要.
研究的目的:
- 量化全球定位系统 (GPS) 测量位置差向量的精度.
- 为了评估测量不确定性如何随向量长度而变化.
- 将GPS推导的距离与从其他测地仪器获得的距离进行比较.
主要方法:
- 重复的GPS观测被分析为位置差异向量.
- 计算了北方,东方和垂直元件的标准偏差.
- 用GPS测量与Geodolite和非常长基线干扰测量 (VLBI) 数据进行了交叉验证.
主要成果:
- 对于长达11公里的向量,标准偏差为4毫米 (北方),6毫米 (东方) 和10-20毫米 (垂直).
- 不确定性随着矢量长度逐渐增加;在225公里处,标准偏差为6毫米 (北),11毫米 (东) 和40毫米 (垂直).
- 据GPS测量,与Geodolite (10-40公里) 达成的共识为0.2 ppm,与VLBI (225公里) 达成的共识为0.05 ppm.
结论:
- 全球定位系统 (GPS) 为地质测量应用提供了高度准确和精确的测量.
- 在各种矢量长度上,GPS的性能是稳定的.
- GPS测量与其他高精度地质测量技术是一致的.
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