| 关于微分圆投影变成变形椭圆的分析与研究 |
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| 引用本文： | 张国坤.关于微分圆投影变成变形椭圆的分析与研究[J].测绘科学,2004,29(3):14-15. |
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| 作者姓名： | 张国坤 |
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| 作者单位： | 吉林师大旅游与地理科学学院,吉林,四平,136000 |
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| 摘 要： | 针对各种地图学教材中关于变形椭圆的证明提出了三个问题,通过对地图投影中的微分圆垂直投影或 斜投影分析,不仅证明了微分圆投影变成了变形椭圆,而且利用几何分析解决了各种地图学教材中关于变形椭圆 证明出现的三个问题,对进一步了解地图投影的变形分布规律有着重要的意义。
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| 关 键 词： | 变形椭圆 地球椭球体 地图投影 经线长度比 纬线长度比 |
| 文章编号： | 1009-2307(2004)03-0014-02 |
| 修稿时间： | 2003年10月26日 |
The analysis and investigation of the little circle projecting into a deformed ellipse |
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| ZHANG Guo-kun.The analysis and investigation of the little circle projecting into a deformed ellipse[J].Science of Surveying and Mapping,2004,29(3):14-15. |
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| Authors: | ZHANG Guo-kun |
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| Abstract: | This paper is aimed at the identification of a deformed ellipse in various map-teaching materials and raises three problems. Through the analysis of small-circle vertical projection or inclined projection of map projection, it not only proves that the small circle had projected into a deformed ellipse,but also solves the three problems which had emerged in the identification of the deformed ellipse in various map-teaching materials through geometrical analysis and it is of great importance for further elognizing of distribution regularity of deformation of map projection. |
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| Keywords: | deformed ellipse earth ellipsoid map projection proportion of meridian length proportion of parallel length |
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