摘要
选取PANGA观测网中的200个GPS基准站12年的坐标序列.采用AIC模型估计准则噪声特性进行分析,并结合不同数据策略对噪声模型建立的影响进行探讨.结果表明:不同数据策略对噪声模型建立的影响较小,基准站站坐标序列噪声模型主要表现为PL+WN噪声模型特性;不同随机模型对GPS站速度估计值的影响相对较小,但在U分量影响最为明显;对比不同策略处理下的周年振幅变化,E、N、U方向振幅值存在差异,最终确定了振幅位移的尺度.
A 12-year coordinate sequence of 200 GPS reference stations in the PANGA observation network was selected.The AIC model used to estimate the noise characteristics of the criterion,and the effects of different data strategies on the establishment of the noise model are discussed.The results show that different data strategies have less influence on the establishment of noise model.The noise model of the base station coordinate sequence is mainly characterized by the PL+WN noise model.The influence of different stochastic models on the GPS station speed estimation is relatively small,but in U.The component influence is the most obvious;compared with the annual amplitude change under different strategies,the amplitude values in the E,N,and U directions are different,and the scale of the amplitude displacement is finally determined.
作者
贺小星
孙喜文
HE Xiaoxing;SUN Xiwen(School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China)
出处
《全球定位系统》
CSCD
2018年第6期69-75,共7页
Gnss World of China
基金
国家自然科学基金(41674005
41804007)
中国博士后科学基金(2018M632909)
赣教高字2019江西省教育厅科学技术项目
江西省数字国土重点实验室开放研究基金项目(DLLJ201803)
重庆市质量技术监督局科研计划项目任务书(CQZJKY2018004)
现代工程测量国家测绘地理信息局重点实验室(TJES1810)
陕西省教育厅项目(18JK0513)
