| 利用局域欧拉矢量法建立CGCS2000速度场模型 |
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| 引用本文： | 吴富梅,刘光明,魏子卿.利用局域欧拉矢量法建立CGCS2000速度场模型[J].武汉大学学报(信息科学版),2012,37(4):432-435. |
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| 作者姓名： | 吴富梅 刘光明 魏子卿 |
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| 作者单位： | 西安测绘研究所,西安市雁塔中段1号,710054 |
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| 基金项目： | 国家自然科学基金资助项目，卫星导航与定位教育部重点实验室(B类)开放研究基金资助项目 |
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| 摘 要： | 提出了利用局域欧拉矢量法建立CGCS2000速度场模型，并且给出确定局部区域点的方法——移动窗口法。首先利用GAMIT／GLOBK软件对“中国地壳运动观测网络工程”（简称“网络工程”）约1070个参考站近10a观测数据重新处理，再进行一元线性回归分析，获得该“网络工程”的速度场；然后利用提出的局域欧拉矢量法对速度场建模，给出了确定局部区域点的移动窗口法的基本原理和具体步骤，并且通过计算对这种方法确定的速度精度进行了分析和比较；最后利用该模型获得CGCS2000其余约1400个参考站的速度。
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| 关 键 词： | CGCS2000 速度场 中国地壳运动观测网络 |
Velocity Field Model of CGCS2000 Based on Euler Vector of Local Area |
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| WU Fumei,LIU Guangming,WEI Ziqing.Velocity Field Model of CGCS2000 Based on Euler Vector of Local Area[J].Geomatics and Information Science of Wuhan University,2012,37(4):432-435. |
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| Authors: | WU Fumei LIU Guangming WEI Ziqing |
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| Institution: | 1(1 Xi’an Research Institute of Surveying and Mapping,1 Middle Yanta Road,Xi’an 710054,China) |
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| Abstract: | In this paper,a method based on Euler vector of local area is presented to construct the model of velocity field,and the method of determining the local area stations-moving window is presented.Firstly,through processing the Crustal Movement Observational Network of China(CMONC) data of ten years by GAMIT/GLOBK and linear regression,the velocities of 1 070 CMONC stations are achieved.Secondly,the model of velocity field is constructed by the new method and the velocities of 1 070 CMONC stations,and the corresponding principles and steps of moving window are presented.Finally,the velocity precision of the new method is compared and analyzed by the actual calculation.The velocities of the remaining 1 400 points of CGCS2000 are obtained by the velocity field model. |
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| Keywords: | China Geodetic Coordinate System 2000 (CGCS2000) velocity field CMONC |
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