Definition and Proposed Realization of the International Height Reference System (IHRS)
Definition and Proposed Realization of the International Height Reference System (IHRS)
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DOI：
10.1007/s10712-017-9409-3
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发表时间：
2017-03
影响因子：
4.6
通讯作者：
J. Ihde;L. Sánchez;R. Barzaghi;H. Drewes;C. Foerste;T. Gruber;G. Liebsch;U. Marti;R. Pail;M. Sideris
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文献类型：
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作者：
J. Ihde;L. Sánchez;R. Barzaghi;H. Drewes;C. Foerste;T. Gruber;G. Liebsch;U. Marti;R. Pail;M. Sideris
研究、理解和模拟全球变化需要大地测量参考框架，其精度要比实际研究的影响的量级高，并在全球范围内具有高度的一致性和可靠性。国际大地测量学协会负责为监测地球系统提供精确的大地测量基础设施，促进实施综合全球大地测量参考系，为影响地球重力场、地球表面几何形状和地球自转的全球现象和过程的一致分析和建模提供可靠的参考系。国际地面参照系的定义、实现、维护和广泛应用，保证了全球统一的几何参照系精度达到毫米级。一个支持可靠描述地球重力场变化（如海平面变化、质量位移、与地球物理流体相关的过程）的等效高精度全球物理参考系缺失。本文从国际高度参考系统的角度阐述了支持实施这种物理参考面的理论基础，并为该系统的实际和可持续实现所需的后续活动提供了指导。基于物理大地测量学的概念方法，推导了全球统一高程参考系的要求。结合实际，设计了其作为国际高度参考系的实现方案。还提出了进一步的执行步骤。
Studying, understanding and modelling global change require geodetic reference frames with an order of accuracy higher than the magnitude of the effects to be actually studied and with high consistency and reliability worldwide. The International Association of Geodesy, taking care of providing a precise geodetic infrastructure for monitoring the Earth system, promotes the implementation of an integrated global geodetic reference frame that provides a reliable frame for consistent analysis and modelling of global phenomena and processes affecting the Earth’s gravity field, the Earth’s surface geometry and the Earth’s rotation. The definition, realization, maintenance and wide utilization of the International Terrestrial Reference System guarantee a globally unifiedgeometricreference frame with an accuracy at the millimetre level. An equivalent high-precision globalphysicalreference frame that supports the reliable description of changes in the Earth’s gravity field (such as sea level variations, mass displacements, processes associated with geophysical fluids) is missing. This paper addresses the theoretical foundations supporting the implementation of such a physical reference surface in terms of an International Height Reference System and provides guidance for the coming activities required for the practical and sustainable realization of this system. Based on conceptual approaches of physical geodesy, the requirements for a unified global height reference system are derived. In accordance with the practice, its realization as the International Height Reference Frame is designed. Further steps for the implementation are also proposed.