| SRG剖分编码与地理坐标的转换算法研究 |
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| 引用本文： | 张玉梅,聂洪山,谢启友,孙兆林,徐欣.SRG剖分编码与地理坐标的转换算法研究[J].地理与地理信息科学,2012,28(2):40-43. |
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| 作者姓名： | 张玉梅 聂洪山 谢启友 孙兆林 徐欣 |
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| 作者单位： | 国防科技大学电子科学与工程学院,湖南长沙,410073 |
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| 基金项目： | 国家973计划项目(613990103);国防科技大学科研计划项目(JC09-04-03) |
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| 摘 要： | 提出一种基于SRG剖分方法的剖分编码与经纬度坐标之间的转换算法,不涉及任何投影变换,计算过程只需加、减、乘、除简单算术运算,计算速度快,且SRG剖分编码本身就具有固定的方向性,利于邻近搜索。算法中采用坐标系辅助区分一些难以区分的菱形块,降低了转化误码率,进而提高了转换的精度。
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| 关 键 词： | SRG 剖分编码 坐标转换 经纬度 地理坐标 |
Study of Translating Algorithm between SRG Subdivision Codes and Geographic Coordinates |
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| ZHANG Yu-mei
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NIE Hong-shan
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XIE Qi-you
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SUN Zhao-lin
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XU Xin.Study of Translating Algorithm between SRG Subdivision Codes and Geographic Coordinates[J].Geography and Geo-Information Science,2012,28(2):40-43. |
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| Authors: | ZHANG Yu-mei NIE Hong-shan XIE Qi-you SUN Zhao-lin XU Xin |
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| Institution: | (College of Electronic Science and Engineering,National University of Defense Technology,Changsha 410073,China) |
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| Abstract: | This paper presents a translating algorithm between SRG subdivision codes and latitude/longitude coordinates.The algorithm does not involve any projection transformation.When calculating,only use addition,subtraction,multiplication and division simple arithmetic,so calculation is faster.SRG subdivision code has a fixed direction,so easy to search nearby.And the coordinate system is used to assist the distinction between rhombus-shaped pieces which are difficult to distinguish.And also the algorithm improves the accuracy of the translation. |
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| Keywords: | SRG subdivision codes coordinate transformation latitude and longitude geographic coordinates |
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