| 城市高精度GPS网到CGCS2000的转换方法 |
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| 引用本文： | 陈永立,张海明.城市高精度GPS网到CGCS2000的转换方法[J].海洋测绘,2012,32(6):53-56. |
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| 作者姓名： | 陈永立 张海明 |
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| 作者单位： | 河北省第一测绘院,河北石家庄,050031 |
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| 摘 要： | 详细介绍了已建立的非2000国家大地坐标系的城市高精度GPS控制网成果到CGCS2000成果进行坐标转换的三种方法，即参考框架和参考历元转换、七参数转换和重新进行网平差；并以某市B级GPS控制网为例，对不同转换方法的精度及误差产生的原因进行了深入的分析，得出了采用七参数进行转换，既能保证成果精度又比重新进行网平差数据处理更简便而且实用的结论。
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| 关 键 词： | 高精度GPS控制网 CGCS2000 坐标参考框架 参考历元 七参数转换 |
Coordinate Conversion Method for High-precision GPS Network of City to the CGCS2000 |
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| CHEN Yongli,ZHANG Haiming.Coordinate Conversion Method for High-precision GPS Network of City to the CGCS2000[J].Hydrographic Surveying and Charting,2012,32(6):53-56. |
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| Authors: | CHEN Yongli ZHANG Haiming |
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| Institution: | (The First Institute of Surveying and Mapping of Hebei Province,Shijiazhuang 050031,China) |
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| Abstract: | This paper studied the 3D terrain visualization which based on the open visual graphics library VTK, and a 3D terrain visualization program has been designed and developed with MFC in the VC development environment. The VTK visualization library pipeline flow method was used based on the analysis of the key technologies in the 3D terrain visualization by VTK including 3D terrain modeling, color mapping and texture mapping etc. Some functions such as reading discrete point coordinate data, building the digital elevation model and the visualization display and interactive function of 3D terrain were realized efficiently. |
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| Keywords: | 3D terrain visualization VTK color mapping texture mapping |
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