摘要
简要分析了最新的国际地球参考框架ITRF2005实现的基本情况及其相对于ITRF2000的改进,以ITRF2005为参考框架建立了新的全球板块运动模型ITRF2005VEL。建模时,首先根据测站的分布和速度场的精度对测站进行初步剔除,然后采用相似变换的方法对全球ITRF2005测站的速度场数据再进行第2次筛选。根据筛选结果利用最小二乘方法建立了全球板块运动背景场及其运动模型,给出了全球11个主要块体的运动参数。此结果与其他学者建立的模型相比,总体上有很好的一致性,但在个别块体上也有所差异。
This paper has analyzed the newest International Terrestrial Reference Frame ITRF2005, and discussed its improvement of the ITRF2000. Then, we established the new global plate motion model -- ITRF2005VEL. When establishing the model, we selected the velocities of the ITRF2005 stations on the ground of their distribution and precision first, and then we selected stations applying similar transform again. We established the background of global plate motion ITRF2005VEL with least squares method based on the selected stations and its velocity field. Compared with others＇ models, our results had a well agreement with them, but certain plates had a little difference.
出处
《测绘科学技术学报》
北大核心
2009年第2期79-81,85,共4页
Journal of Geomatics Science and Technology
基金
国家自然科学基金项目(40674014)
关键词
板块运动模型
ITRF2005
最小二乘法
plate motion model
ITRF（International Terrestrial Reference Frame）2005
least squares method
