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.

这项研究将进一步发展测试地球重力场任何模型所需的理论和实践方法。 以前，大地测量学家不得不依赖于分析误差估计，通常基于观测数据。 合成地球重力模型通过提供所用方法的精确验证技术来避免这种情况。 合成模型将允许大地水准面模型的用户（例如，对于GPS测高）对他们的结果更有信心。 当与精确的大地水准面模型一起使用时，GPS比传统的精神水准测量更快，更便宜，提供约800%的生产率增益。