Combined analysis and validation of Earth rotation models and observations

地球自转模型和观测的综合分析和验证

• 批准号: 5456304
• 负责人: Professor Dr.-Ing. Hansjörg Kutterer
• 金额: --
• 依托单位: Deutsches Geodätisches Forschungsinstitut
• 依托单位国家: 德国
• 项目类别: Research Units
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5456304?language=en
• 关键词: Combined; analysis; validation; Earth; rotation

Earth orientation parameters (EOP) and low-degree harmonic coefficients of the gravity field of the Earth are fundamental geodetic contributions to the description of global geodynamic processes. Although these time-variable parameters are physically connected by the Earth¿s tensor of inertia, it is still common practice to derive the respective time series separately. This is mainly due to the independent space-geodetic observation techniques in use (geometric techniques for the EOP vs. gravity field satellite missions). Aiming at high precision and physical consistency it is indispensable to mutually validate and to jointly analyze the data. Hence, the final goal of this project is to derive reliable time series for EOP and gravity field coefficients from recent satellite missions by using and merging all available relevant data in a highly consistent way. For this purpose the present amount of inconsistency will be assessed. A proper statistical methodology for the combination of the parameter time series on the data level will be developed and recommended. The results of this project are of particular interest for the consistent combination of EOP and gravity field data on the model level.

地球方向参数（EOP）和地球重力场的低次谐波系数是描述全球地球动力学过程的基本大地测量贡献，尽管这些随时间变化的参数在物理上与地球相连。 s 惯性张量，单独推导时间序列仍然是各自的常见做法，这主要是由于使用独立的空间大地测量技术（EOP 与重力场卫星任务的几何技术）。因此，该项目的最终目标是通过使用和合并所有可用的相关数据，从最近的卫星任务中得出可靠的 EOP 和重力场系数时间序列。为此，将开发并推荐一种用于数据级别参数时间序列组合的当前不一致程度。用于在模型级别上一致地组合 EOP 和重力场数据。

项目成果

Determination of the Earth's pole tide Love number k2 from observations of polar motion using an adaptive Kalman filter approach

使用自适应卡尔曼滤波器方法根据极移观测确定地球极潮 Love 数 k2

• DOI: 10.1029/2012jb009296
• 发表时间: 2012-09-01
• 期刊: Journal of Geophysical Research
• 作者: F. Seitz;S. Kirschner;D. Neubersch
• 通讯作者: D. Neubersch

Recursive Adjustment Approach for the Estimation of Physical Earth Parameters from Polar Motion

极移估计物理地球参数的递归调整方法

• DOI: 10.1007/978-3-642-37222-3_60
• 发表时间: 2014
• 作者: Kirschner; S.; Seitz; F.
• 通讯作者: F.

Combination of gravimetric and altimetric space observations for estimating oceanic polar motion excitations

结合重力和高度空间观测来估计海洋极移激励

• DOI: 10.1029/2012jc007915
• 发表时间: 2012
• 期刊: Journal of Geophysical Research
• 作者: Göttl; F.; M. Schmidt; R. Heinkelmann;R. Savcenko
• 通讯作者: R. Savcenko

Towards the combination of data sets from various observation techniques

结合各种观察技术的数据集

• DOI: 10.1007/978-3-319-10828-5_6
• 发表时间: 2011
• 作者: Schmidt; M.; F. Göttl;R. Heinkelmann
• 通讯作者: R. Heinkelmann