华中华东陆态网坐标时序噪声模型及环境负载分析  

Time series noise model and environmental load analysis of CMONOC coordinates in Central and East China

作　　者：朱文强 李建章 隋哲民 高志钰 ZHU Wenqiang;LI Jianzhang;SUI Zhemin;GAO Zhiyu(Faculty of Geomatics,Lanzhou Jiaotong University/National-Local Joint Engineering Research Center of Technologies and Applications for National Geographic State Monitoring/Gansu Provincial Engineering Laboratory for National Geographic State Monitoring,Lanzhou 730070,China;State Key Laboratory of Earthquake Dynamics,Institute of Geology,China Earthquake Administration,Beijing 100029,China)

机构地区：[1]兰州交通大学测绘与地理信息学院/地理国情监测技术应用国家地方联合工程研究中心/甘肃省地理国情监测工程实验室,兰州730070 [2]中国地震局地质研究所地震动力学国家重点实验室,北京100029

出　　处：《导航定位学报》2023年第2期147-152,共6页Journal of Navigation and Positioning

基　　金：国家自然科学基金项目(41661091);兰州交通大学优秀平台支持项目(201806)。

摘　　要：针对目前华中、华东地区陆态网坐标时序噪声模型及速度场研究还不全面和深入,时间跨度未满足要求的问题,同时也为了进一步研究环境负载对噪声模型和速度场的影响,提出一种分析方法:利用赫克托(Hector)软件解算陆态网华中和华东地区34个连续站10 a的时间序列数据确定最优噪声模型,并经过环境负载改正,比较改正前后最优噪声模型的变化;然后获得基于有色噪声以及环境负载改正后的速度场,并分析噪声和环境负载对其的影响。结果表明,在北(N)和东(E)方向的最优噪声模型均为“幂律噪声(PL)+白噪声(WN)”,在高(U)方向的最优噪声模型为“闪烁噪声(FN)+白噪声(WN)”;环境负载改正只是改变了其在整体噪声模型中的占比,但其仍占主要地位;考虑有色噪声及环境负载后,速度场精度明显更高。Aiming at the problems that the research on the coordinate time series noise model and velocity field of the land state network in Central and East China is not comprehensive and in-depth,and the time span does not meet the requirements,at the same time,in order to further study the impact of environmental load on the noise model and velocity field,the paper proposed an analysis method:Hector software was used to solve the time series data of 34 continuous stations during 10 years of the land state network in Central and East China to determine the optimal noise model,and after the environmental load correction,the changes of the optimal noise model before and after the correction were compared;then the corrected velocity field based on colored noise and environmental load was obtained,and the influence of noise and environmental load on it was analyzed.Results showed that the optimal noise model in N and E directions would be'power-law shot noise(PL)+white noise(WN)',and in U direction be'flicker noise(FN)+white noise(WN)';in general,the environmental load correction would only change its proportion in the overall noise model,but still playing a major role;moreover,by considering colored noise and environmental load,the accuracy of velocity field would be obviously higher.

关 键 词：时间序列分析 中国大陆构造环境监测网络(CMONOC) 贝叶斯数值分析法 噪声模型 速度场 环境负载 

分 类 号：P228[天文地球—大地测量学与测量工程]