Abstract

The article provides a generalized retrospective of creating global models of the Earth’s gravity field using satellite methods and modern global ultra-high-degree models; the most promising new solutions are considered. The main attention is given to reviewing techniques that affect the resolution of satellite methods, their development, and ways of further improvement. Modern combined models of the Earth’s gravity field, which also include altimetry data, instrumental surveys and global topography, are most interesting. The areas of possible practical application of global models and applied problems solved with their help depend on an understanding of the nature of model data and methods for their modification. At present, the resolution of models up to 5540 degrees of field expansion in spherical harmonics is achievable; however, high values of their degree and order do not always determine the reliability of the presented model data (not verified by direct measurements). Therefore, along with the highest-degree solutions, this article considers most of the known models of the Earth’s gravity field and their most characteristic modifications.

中文翻译：

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地球重力场的高级模型：发​​展历史、前景评估和分辨率

摘要

文章提供了使用卫星方法和现代全球超高阶模型创建地球重力场全球模型的概括回顾；最有希望的新解决方案被考虑在内。主要关注审查影响卫星方法分辨率的技术、它们的发展以及进一步改进的方法。地球重力场的现代组合模型，其中还包括高度测量数据、仪器测量和全球地形，是最有趣的。全局模型可能的实际应用领域和在它们的帮助下解决的应用问题取决于对模型数据的性质和修改方法的理解。目前，可实现球谐函数中高达5540度场扩展的模型分辨率；然而，它们的程度和阶次的高值并不总是决定所呈现模型数据的可靠性（未经直接测量验证）。因此，除了最高阶解，本文还考虑了地球重力场的大多数已知模型及其最具特征的修改。