| GPS RTK应用于铁路定线测量的方案研究 |
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| 引用本文： | 孙玉国.GPS RTK应用于铁路定线测量的方案研究[J].测绘与空间地理信息,2012(7):112-114,120. |
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| 作者姓名： | 孙玉国 |
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| 作者单位： | 中国建筑材料工业地质勘查中心黑龙江总队 |
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| 摘 要： | GPS RTK(Real Time Kinematic)定位技术是基于载波相位观测值的实时动态定位技术,定位精度高,具有观测时间短、无须通视和现场给出精确坐标等优点,使得测量作业更简单、方便、可靠和快捷。本文论述了铁路测量坐标系中存在的长度变形问题,提出了建立分段独立坐标系的数学模型,解决了在投影过程中的长度变形问题,使其投影长度变形不大于1/40 000,便于RTK直接进行铁路定线测量。
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| 关 键 词： | 铁路 GPSRTK 投影变形 定线测量 |
Application of GPS-RTK Technique in Railway Location Survey |
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| SUN Yu-guo.Application of GPS-RTK Technique in Railway Location Survey[J].Geomatics & Spatial Information Technology,2012(7):112-114,120. |
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| Authors: | SUN Yu-guo |
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| Institution: | SUN Yu-guo(The Heilongjiang Corps of China Building Material Industry Geology Exploration Center,Harbin 150040,China) |
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| Abstract: | GPS RTK(Real Time Kinematic),which is a real-time kinematic positioning technique based on carrier phase observations,is high in positioning accuracy and low in observation time,can provide accurate coordinate without the requirement of inter-visibility and operation locale,and makes the surveying operation simpler,more convenient,more reliable and quicker.This paper discusses the length deformation in railway surveying coordinate system,puts forward the mathematical model of establishing a independent section coordinate system for solving the length deformation problem in the coordinate system of railway surveying to make the projection length deformation less than 1/40000,and make it possible to use RTK directly in railway location surveying. |
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| Keywords: | railway GPS RTK projection deformation location survey |
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