| 重庆市似大地水准面精化及模型精度检测 |
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| 引用本文： | 王昌翰.重庆市似大地水准面精化及模型精度检测[J].测绘与空间地理信息,2015(6). |
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| 作者姓名： | 王昌翰 |
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| 作者单位： | 重庆市勘测院,重庆,400020 |
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| 摘 要： | 介绍了重庆市似大地水准面精化的基本情况,并对精化成果的内符合精度以及外符合精度进行了分析,比较了不同GPS观测时间长度、静态GPS测量和结合CQCORS系统的网络RTK测量的检核精度。结果表明,重庆市似大地水准面精化成果内符合精度较高,主城都市区及区县城市外符合精度较高,能够满足四等三角高程测量精度要求,其余地区满足图根等级高程测量或碎部点高程测量精度要求。
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| 关 键 词： | 似大地水准面 精化 模型精度检测 GPS |
Refinement and Model Accuracy Detection of Quasi-Geoid in Chongqing City |
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| WANG Chang-han.Refinement and Model Accuracy Detection of Quasi-Geoid in Chongqing City[J].Geomatics & Spatial Information Technology,2015(6). |
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| Authors: | WANG Chang-han |
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| Abstract: | In this paper , the basic information of geoids refinement of Chongqing is first introduced , and then the inner precision and the outer precision of the refinement results are respectively analyzed , and then the precision of GPS surveying with different observa-tion times, static GPS measurements, and network RTK surveying with CQCORS are compared .The results show that the inner preci-sion of geoids refinement results of Chongqing is high , the outer precision of metropolitan areas, districts and counties is high enough to meet the requirements of the fourth order trigonometric leveling , and the precision of the other areas is high enough to meet the re-quirements of the graded altimetry survey of root control points or detailed points . |
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| Keywords: | quasi-geoid refinement model accuracy detection GPS |
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