中文摘要：

介绍了ITRF2014的定义、测站的全球分布、输入数据的基本情况、处理数据的基本策略以及相对于ITRF2008的改进。ITRF2014首次考虑了非潮汐大气载荷模型,提升了参考框架的精度并优化了内部模型。在推出台站坐标、速度、残差、EOPs等常规产品的基础上,ITRF2014提出两个新产品：只基于SLR的地心运动模型和震后形变模型。原有模型的改进与新模型的提出为世界各区域坐标系的更新与精化、地震的预测等作出了新的贡献。

英文摘要：

The paper introduces the definition of ITRF2014, the global distribution of stations, the strategy of processing input data, and the improvements of ITRF2014 relative to ITRF2008. ITRF2014 first applies a non-tidal atmospheric loading model, then enhances the accuracy of the reference framework and optimizes the internal model. On the basis of conventional products, such as station coordinates, speed, residuals and EOPs, ITRF2014 has issued two new products： the geocentric motion model based only on SLR, and the post-seismic parametric model. The improvements on the original model have made advancements in updating and refining the regional coordinates and estimation of earthquakes.