| 顾及控制点空间分布的坐标转换模型研究 |
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| 引用本文： | 贺俊凯,徐东升,王明远,李明峰.顾及控制点空间分布的坐标转换模型研究[J].全球定位系统,2022,47(1):18-22. |
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| 作者姓名： | 贺俊凯 徐东升 王明远 李明峰 |
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| 作者单位： | 1.南京工业大学 测绘科学与技术学院, 南京211800 |
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| 基金项目： | 国家自然科学基金项目(41974214)；江苏省地质矿产勘查局科研项目(2020KY03)；江苏省自然资源科技计划项目(KJXM2020064) |
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| 摘 要： | 针对目前坐标转换中公共点选取缺乏依据、坐标转换精度难以保证的问题,研究了基于控制点空间分布的坐标转换模型.?提出了控制点均匀度的概念,研究了控制点均匀度和密度的表达方法,分析了公共点均匀度和密度对坐标转换模型精度的影响,构建了顾及控制点空间分布的坐标转换模型,探讨了地方坐标系与CGCS2000的坐标转换流程,并结合实例...
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| 关 键 词： | 坐标转换 独占圆 公共点 均匀度 密度 |
| 收稿时间： | 2021-12-02 |
Research on coordinate transformation model considering the spatial distribution of control points |
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| Institution: | 1.School of Geomatics Science and Technology, Nanjing Tech University, Nanjing 211800, China2.The 2nd Geological Brigade of Jiangsu Geology & Mineral Exploration Bureau, Changzhou 213022, China |
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| Abstract: | To guarantee the accuracy of coordinate transformation, a coordinate transformation model was studied through selecting the proper coincident points based on the spatial distribution of control points. With the models to describe the uniformity and density of control points set up, the influence of uniformity and density of coincident points on the accuracy of coordinate transformation model was discussed. A coordinate transformation model was constructed with the spatial distribution of control points taken into account, and the coordinate transformation process between the local coordinate system and CGCS2000 was discussed. At last, the effectiveness of the new model was verified with examples. |
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