中国大陆GPS速度场的球面小波模型及多尺度特征分析

doi:10.11947/j.AGCS.2015.20140141

测绘学报 ›› 2015, Vol. 44 ›› Issue (10): 1063-1070.doi: 10.11947/j.AGCS.2015.20140141

• 大地测量学与导航 • 下一篇

中国大陆GPS速度场的球面小波模型及多尺度特征分析

程鹏飞¹, 文汉江², 孙罗庆³, 成英燕², 张鹏⁴, 秘金钟², 王华²

1. 国家测绘产品质量检验测试中心, 北京 100830;
2. 中国测绘科学研究院, 北京 100830;
3. 深圳市勘察测绘院有限公司, 广东深圳 518028;
4. 国家基础地理信息中心, 北京 100830

收稿日期:2014-05-07 修回日期:2015-07-22 出版日期:2015-10-20 发布日期:2015-10-23
通讯作者: 文汉江,E-mail:wenhj@casm.ac.cn E-mail:wenhj@casm.ac.cn
作者简介:程鹏飞(1964—),男,博士,研究员,研究方向为卫星定位的理论研究和应用开发.E-mail:chengpf@sbsm.gov.cn
基金资助:
国家973计划(2013CB733302);国家自然科学基金(41274031;41374014;41404014);国家863计划(2013AA122501;2013AA122502)

The Spherical Wavelet Model and Multiscale Analysis of Characteristics of GPS Velocity Fields in Mainland China

CHENG Pengfei¹, WEN Hanjiang², SUN Luoqing³, CHENG Yingyan², ZHANG Peng⁴, BEI Jinzhong², WANG Hua²

1. Quality Inspection and Test Center of National Surveying and Mapping Products, Beijing 100830, China;
2. Chinese Academy of Surveying and Mapping, Beijing 100830, China;
3. Shenzhen Geotechnical Investigation and Surveying Institute Co.Ltd., Shenzhen 518028, China;
4. National Geomatics Center of China, Beijing 100830, China

Received:2014-05-07 Revised:2015-07-22 Online:2015-10-20 Published:2015-10-23
Supported by:
The National Basic Research Program of China(973 Program)(No.2013CB733302),The National Natural Science Foundation of China (Nos.41274031,41374014,41404014),The National High-tech Research and Development Program of China (863 Program) (Nos.2013AA122501,2013AA122502)

摘要/Abstract

摘要： 利用1999—2009年间中国大陆共1068个GPS站点在东方向、北方向的速度值,采用DOG球面小波多尺度分析方法,建立了中国大陆东方向、北方向多尺度速度场.球面小波模型的尺度主要根据观测站点的密度来确定,利用检核点上的已知速度与模型速度之间的均方差来评定模型的精度.利用球面小波模型可以更加清晰地表示速度场的大尺度特征和复杂的局部变化特征.站点稠密区域,模型在东方向、北方向上的精度分别为±0.95 mm/a、±0.97 mm/a,稀疏区域对应的精度分别为±1.32 mm/a和±1.30 mm/a.

关键词: GPS速度场, DOG球面小波, 多尺度估计

Abstract: The GPS measurements of the Crustal Movement Observation Network in China (CMONC) from 1999 to 2009 were processed, and the velocities of 1068 stations in east and north directions were derived. These velocities were used to establish velocity models in east and north directions within mainland China by using Difference of Gauss (DOG) spherical wavelet. The trend of GPS velocity fields are derived by regional Euler vector method, the residual velocity fields are then used for the spherical wavelet modeling. The scales of wavelets are selected according to distributions of GPS stations. The accuracy of the model is estimated according to the mean square deviation between observations and model, which is ±0.95 mm/a for east direction, and ±0.97 mm/a for north direction in the region with dense stations, while it is ±1.32 mm/a and ±1.30 mm/a respectively for east and north directions in the region with sparse stations. The spherical wavelet modeling of the velocity can also show characteristics at different scales.

Key words: GPS velocity fields, DOG spherical wavelet, multiscale estimation

中图分类号:

P223

程鹏飞, 文汉江, 孙罗庆, 成英燕, 张鹏, 秘金钟, 王华. 中国大陆GPS速度场的球面小波模型及多尺度特征分析[J]. 测绘学报, 2015, 44(10): 1063-1070.

CHENG Pengfei, WEN Hanjiang, SUN Luoqing, CHENG Yingyan, ZHANG Peng, BEI Jinzhong, WANG Hua. The Spherical Wavelet Model and Multiscale Analysis of Characteristics of GPS Velocity Fields in Mainland China[J]. Acta Geodaetica et Cartographica Sinica, 2015, 44(10): 1063-1070.

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中国大陆GPS速度场的球面小波模型及多尺度特征分析

The Spherical Wavelet Model and Multiscale Analysis of Characteristics of GPS Velocity Fields in Mainland China

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