Validation of Synthetic Regional Gravity Field Models

这项研究将进一步发展测试任何地球重力场模型所需的理论和实践方法。以前，测地仪必须依赖分析误差估计，通常基于观测数据。合成地球重力模型通过提供所用方法的准确验证技术来避免这种情况。合成模型将使大地水准面模型(例如，用于GPS加高)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比传统的精神水准测量更快、更便宜，生产率提高了约800%。

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.