安徽省CORS坐标时间序列噪声和速度场分析

利用GAMIT/GLOBK软件解算安徽省卫星定位综合服务系统(AHCORS) 2013-01～2018-06数据,得到参考站坐标时间序列,并对其进行噪声分析.结果 表明,安徽省境内参考站的最佳噪声模型为白噪声+闪烁噪声(WN+FN)模型.在顾及有色噪声影响时,AHCORS在ITRF2008框架下的平均运动速度为31.7...

Analysis of Noise and Velocity Field in Coordinate Time Series of Anhui CORS

Using GAMIT/GLOBK software,we calculate the coordinate time series of Anhui continuously operation reference stations(CORS)during 2013-01 to 2018-06.The noise is analyzed and the results show that the optimal noise model of AHCORS is the white noise+flick noise(WN+FN)model.Considering the influence of colored noise,the average velocity of AHCORS reference station under ITRF2008 frame is 31.72 mm/a with a direction of E22.76°S.The average velocity with respect to Eurasian plate is 6.28 mm/a with a direction of E2.65°N.For the vertical direction,the average velocity is-0.71 mm/a,with the Huaihe river as the boundary,showing a trend of uplift in the south and subsidence in the north.Among them,the uplift rate of the Dabie mountain area is higher than that of the Jianghuai and Huangshan areas,the uplift rate of the Jianghuai area is relatively gentle,and the average uplift rate of the area south of the Huaihe river basin is 2.94 mm/a.The subsidence in Huaibei area is obvious,the average subsidence rate is 10.92 mm/a,the maximum subsidence rate is 32.82 mm/a,which is at Dangshan station in Suzhou(SZDS).The obvious subsidence in this area may be caused by the extraction of mineral resources in recent years.