| 基于CQG2000的吉林省西部地区似大地水准面的建立 |
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| 引用本文： | 刘振宇,高炳浩.基于CQG2000的吉林省西部地区似大地水准面的建立[J].测绘学报,2010,39(5):441-443. |
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| 作者姓名： | 刘振宇 高炳浩 |
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| 作者单位： | 吉林省基础地理信息中心,吉林长春,130051;吉林省基础地理信息中心,吉林长春,130051 |
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| 摘 要： | 针对CQG2000精度无法满足实际工作的情况，提出一种新的重力似大地水准面与GPS水准的拟合方法—残差模型法，利用CQG2000、较密集的GPS水准点，采用残差模型法建立吉林省西部地区似大地水准面模型（JiLin West Quasi-Geoid，JLWQG）。论述建立JLWQG的三角剖分双线性内插算法及其适用性，检测结果表明，JLWQG精度达到了±0.05m，JLWQG在吉林省西部地区基础测绘更新工作中进行了大面积的应用，取得了满意的结果。
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| 关 键 词： | CQG2000 残差模型法 吉林省西部地区似大地水准面 三角割分双线性内插 应用 |
| 收稿时间： | 2010-01-12 |
| 修稿时间： | 2010-04-08 |
Establishing the Jilin West Quasi-Geoid Based on CQG2000 |
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| LIU Zhenyu,GAO Binghao.Establishing the Jilin West Quasi-Geoid Based on CQG2000[J].Acta Geodaetica et Cartographica Sinica,2010,39(5):441-443. |
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| Authors: | LIU Zhenyu GAO Binghao |
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| Institution: | LIU Zhenyu,GAO Binghao Jilin Basic Geography Information Center,Changchun 130051,China |
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| Abstract: | As the precision of CQG2000 cannot meet the need of practical work, a residual model method of combining gravity quasi-geoid and GPS level has been presented. Based on CQG2000 and GPS level points with comparatively high density, the JiLin West Quasi-Geoid (JLWQG) is determined by this residual model method. This paper also discussed the triangulation bilinear interpolation algorithm and its applicability for JLWQG. The study shows that the precision of JLWQG is up to ±0.05m. And JLWQG is widely and efficiently used in the renewal of basic surveying and mapping in the west of JiLin. |
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| Keywords: | CQG2000 residual model method Jilin west quasi-geoid(JLWQG) triangulation bilinear interpolation algorithm application |
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