地理空间信息2024，Vol.22Issue(1)：114-116,3.DOI:10.3969/j.issn.1672-4623.2024.01.027
武汉IGS站WUHN点位变化特征分析
WUHN Point Change Characteristic Analysis of Wuhan IGS Station
摘要
Abstract
In view of the periodicity of time series and the difference of moving characteristics of IGS observation stations in different regions,we obtained the coordinate time series of Wuhan(WUHN)station in ITRF 2014 from 2010 to 2020 based on GAMIT/GLOBK 10.7 software.Then,we used the power spectrum analysis method to separate and extract the periodic term of time series of WUHN station.The experimental results show that the coordinate time series of WUHN station has annual periodicity and semiannual periodicity in the U direction,and the N and E directions have the characteristic of linear change.The average moving speeds in the N and E directions are-12 mm/a and 33 mm/a respective-ly.Wuhan region shows a trend of moving to the southeast.Through the analysis of maximum likelihood value,it is confirmed that the best mod-el of coordinate time series noise of WUHN station is white noise+rand walk noise+flicker noise combined model.关键词
武汉地区/基准站/功率谱/周期性/噪声模型/武汉IGS站Key words
Wuhan area/reference station/power spectrum/periodicity/noise model/Wuhan IGS station分类
天文与地球科学引用本文复制引用
李卫军,黄昭军,葛继空..武汉IGS站WUHN点位变化特征分析[J].地理空间信息,2024,22(1):114-116,3.基金项目
河南省高校科学研究资助项目(2021-ZZJH-035). （2021-ZZJH-035）
