我国东北区域参考框架的空间关系时空特性研究

以东北地区2005~2018年近14 a的中国地壳运动观测网络数据为基础，采用三角划分方法构建相邻区域的基线时间序列，从频谱特征、残余共模误差、空间相对运动规律3个方面进行时空特征分析。结果表明，基线各分量的周期性影响主要以年周期和半年周期为主；基线之间的残余共模误差在平面方向的影响约为1.14 mm，垂直方向的影响最大为3.17 mm；平均随机影响在东西方向最大；基线水平分量在空间尺度上逐年缩短，以北东方向的基线为主，在南北分量尤为明显，且在近海和内陆地区都有较明显的缩短趋势。

The Relative Spatial Relation and Random Effects of Regional Reference Frame in the Northeast of China

Based on data from the Crustal Movement Observation Network of China in northeast China from 2005 to 2018, we use triangulation to construct the baseline time series of adjacent regions, and conduct temporal and spatial characteristics analysis from three aspects: spectrum characteristics, residual common mode errors, and spatial relative motion rules. The results show that the periodic effects of each component of the baseline are mainly annual and semi-annual cycles. The magnitude of the residual common mode error between baselines is about 1.14 mm horizontally and a maximum of 3.17 mm vertically. The average random effect is mainly in the east and west directions. In terms of spatial scale, the baselines that are shortened year by year are mainly in the direction of east by north, especially in the south-north component of the baseline, and the distribution characteristics of baseline length are obviously shortened in both offshore and inland regions.