| GPS隧道平面控制测量中若干问题研究 |
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| 引用本文： | 范东明,路伯祥. GPS隧道平面控制测量中若干问题研究[J]. 测绘学院学报, 1998, 0(1) |
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| 作者姓名： | 范东明 路伯祥 |
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| 作者单位： | 西南交通大学测量工程系!成都610031 |
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| 摘 要： | 分析了 GPS用于隧道平面控制测量时 ,进洞方向和横向贯通误差受垂线偏差影响的规律 ,得出了消除或减弱垂线偏差影响的 3种有效方法 ;给出了新的 GPS数据处理的步骤和方法 ;同时提出了一种有效利用野外观测数据来获取可靠的单点定位解
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| 关 键 词： | GPS控制测量 隧道施工测量 垂线偏差 似椭球 GPS单点定位 |
Study on some Problems about GPS Tunnel Horizontal Control Survey |
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| Fan Dongming Lu Boxiang. Study on some Problems about GPS Tunnel Horizontal Control Survey[J]. Journal of Institute of Surveying and Mapping, 1998, 0(1) |
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| Authors: | Fan Dongming Lu Boxiang |
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| Affiliation: | Fan Dongming Lu Boxiang |
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| Abstract: | This article analyses the law that both tunneling direction and crosswise through error are influenced by deflection of the vertical in case of GPS to be used in tunnel horizontal control survey, and three efficient methods to eliminate or reduce the influence of deflection of the vertical are put forward. A new process about GPS data processing is given. Finally, a means to obtain reliable single point positioning coordinate by making full use of field observation data and to estimate its precision is proposed. |
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| Keywords: | GPS control survey Tunnel construction survey Deflection of the vertical Quasiellipsoid GPS single point positioning |
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