2008-2014年中国及周边地区IGS站点测站坐标时间序列

ITRF14在中国区域及周边测站分布较少，直接利用难以得到高精度GNSS测站坐标。项目拟利用全球范围内均匀分布的IGS核心站、中国区域及周边几何分布较好的、高稳定性的IGS站，结合区域内高密度、高精度的SHCORS站；利用瞬时对齐逐历元估计各台站连接到ITRF的对齐坐标解，然后再对每个站点进行时间序列分析，独立地估计每个站点在参考历元的测站坐标、速度及非线性变化，建立高精度上海区域大地参考框架。资源为上海区域大地参考框架下中国及周边IGS站点2008-2014台站坐标时间序列。

ITRF14 has a sparse distribution of geodetic stations in China and its adjacent regions, which makes it challenging to directly acquire high-precision GNSS station coordinates. This project plans to utilize globally uniformly distributed IGS core stations, as well as highly stable IGS stations with favorable geometric distributions in and around China, combined with high-density, high-precision SHCORS stations within the study area. First, epoch-by-epoch instantaneous alignment estimation will be carried out to obtain the aligned coordinate solutions connecting each station to the ITRF. Then, time series analysis will be performed for each individual station to independently estimate the station coordinates, velocities, and nonlinear variations at the reference epoch, so as to establish a high-precision Shanghai regional geodetic reference frame. The dataset resources include the 2008–2014 station coordinate time series of IGS stations in China and its surrounding areas under the Shanghai regional geodetic reference frame.

搜集汇总

背景与挑战

背景概述

该数据集提供了2008年至2014年中国及周边地区IGS站点的坐标时间序列，旨在通过建立上海区域大地参考框架，解决ITRF14站点分布不足的问题，以高精度估计站点坐标、速度和非线性变化。数据集基于IGS站点和SHCORS站点的观测数据，采用GAMIT/GLOBK软件和st_filter方法生成，适用于地球科学和物理地理学领域的研究。