Validation of Synthetic Regional Gravity Field Models

合成区域重力场模型的验证

• 批准号: LX0989220
• 负责人: Prof Dr William Featherstone
• 金额: $ 3.67万
• 依托单位: Curtin University
• 依托单位国家: 澳大利亚
• 项目类别: Linkage - International
• 财政年份: 2009
• 资助国家: 澳大利亚
• 起止时间: 2009-01-01 至 2010-03-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/LX0989220
• 关键词: Validation; Synthetic; Regional; Gravity; Field

This research will further develop the theoretical and practical methods required to test any model of the Earth's gravity field. Previously, geodesists have had to rely on analytical error estimates, usually based on observed data. A synthetic Earth gravity model avoids this scenario by giving an exact validation technique of the methods used. The synthetic model will allow users of geoid models (e.g., for GPS heighting) to have much more confidence in their results. When used with a precise geoid model, GPS is faster and cheaper than conventional spirit-levelling, offering around 800% productivity gains.

这项研究将进一步开发测试地球重力场模型所需的理论和实践方法。 此前，大地测量学家不得不依赖分析误差估计，通常基于观测数据。 合成地球重力模型通过对所使用的方法提供精确的验证技术来避免这种情况。 综合模型将使大地水准面模型（例如 GPS 高程）的用户对其结果更有信心。 当与精确的大地水准面模型一起使用时，GPS 比传统的水平仪更快、更便宜，可将生产率提高约 800%。