| GPS网基准点在空间坐标系下的稳定性检验 |
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| 引用本文： | 杨大勇,王坚,王彬,孟祥超.GPS网基准点在空间坐标系下的稳定性检验[J].测绘科学,2013,38(2):87-89. |
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| 作者姓名： | 杨大勇 王坚 王彬 孟祥超 |
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| 作者单位： | 江苏省资源环境信息工程重点实验室/中国矿业大学环境与测绘学院,江苏徐州,221116 |
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| 基金项目： | 国家自然科学基金青年基金，江苏省"青蓝工程"，江苏省高校优势学科建设工程项目 |
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| 摘 要： | 目前位移显著性检验的方法很多,但都是针对一维、二维问题在地方坐标系或局部坐标系中的检验。如果把GPS-84空间直角坐标系下的数据转化到地方或局部坐标系中进行检验,不仅增加了工作量,且在转换的过程中会损失精度;对于变形量很小的点,检验的可靠性大大降低。而直接在GPS-84空间坐标系下进行检验,将不会存在这些问题。本文提出一种在GPS-84空间直角坐标系下位移显著性检验的新方法———极限误差法,实验表明极限误差法是可靠的。
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| 关 键 词： | 极限误差 基准点稳定性 变形监测 GPS |
Stability test of GPS network benchmarks in spatial coordinates |
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| YANG Da-yong,WANG Jian,WANG Bin,MENG Xiang-chao.Stability test of GPS network benchmarks in spatial coordinates[J].Science of Surveying and Mapping,2013,38(2):87-89. |
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| Authors: | YANG Da-yong WANG Jian WANG Bin MENG Xiang-chao |
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| Institution: | (①Jiangsu Key Laboratory of Resources and Environmental Information Engineering,School of Enviromental Science and Spatial Informatics,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | At present,there are many methods to be used to inspect significant,displacement aiming at the one dimensional or two dimensional problems in the local coordinate system.If the data in the GPS-84 spatial Cartesian coordinate system is transformed into the local coordinate system to be inspected,it would not only increase the workload,but also reduce accuracy in the conversion process.For small deformed points,the reliability of the test would be low.Inspecting directly in GPS-84 space coordinates systerm could avoid the risk.This paper presented a method of significant displacement test in the GPS-84 spatial Cartesian coordinate system,named limit error method.The experimental results showed that the method was reliable. |
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| Keywords: | limit error stability of monitoring benchmarks deformation monitoring GPS |
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