基于时间序列的GPS速率可靠性分析  

ANALYSIS ON RELIABILITY OF GPS RATE WITH TIME SERIES

作　　者：丁晓光[1,2] 甘卫军[1] 肖根如[3] 张艺[2] 

机构地区：[1]地震动力学国家重点实验室,中国地震局地质研究所,北京100029 [2]陕西省地震局,西安710068 [3]东华理工大学,抚州344000

出　　处：《大地测量与地球动力学》2014年第1期108-112,117,共6页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震行业专项(201208009-13);国家"十二五"科技支撑项目(2012BAK19B02);中国地震局青年震情跟踪课题(2013020216)

摘　　要：利用长期连续GPS时间序列分析连续站和流动站速率的可靠性，研究不同时间长度和起算位置对连续站速率的影响，以及观测周期和时间跨度对流动站速率的影响，总结了要获取可靠速率所需的时间：连续站3～4年数据拟合得到的水平速率可靠性在±1mm／a以内；流动站达到相同精度至少需要5～6年数据积累，垂向速率的变化范围大于±3mm／a。The reliability of rate of continuous stations and mobile stations with the GPS long time series and the influence of rate of continuous station was analyzed, considering the different time lengths and starting phases, as well as the rate of mobile station, considering the influence factors of observation cycle and time span. The re-sults show that horizontal rate of continuous station is within ± 1 mm/a based on 3-4 years＇ fitting data, and the var-iation range of vertical velocity would still greater than ± 3mm/a.

关 键 词：时间序列 GPS速率 连续站 流动站 可靠性 

分 类 号：P207[天文地球—测绘科学与技术]