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| 引用本文： | 李延兴,张静华,张俊青,张中伏,杜雪松.?????????????????????????????[J].大地测量与地球动力学,2007,27(2):37-42. |
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| 作者姓名： | 李延兴 张静华 张俊青 张中伏 杜雪松 |
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| 作者单位： | 中国地震局第一监测中心,天津,300180 |
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| 摘 要： | ?????????????????????????ι??????????????????????????????γ?????е?4?η???,???????????????γ??????????4?η?????????????????Ч?????????е????????????????????
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| 关 键 词： | ??????????? ??????? ??????? ??η??? ???Ω??? |
| 文章编号： | 1671-5942(2007)02-0037-07 |
| 修稿时间： | 2006年11月2日 |
A DIRECT TRANSFORMATION FROM GEOCENTRIC CARTESIAN TO GEODETIC COORDINATES |
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| Li Yanxing,Zhang Jinghua,Zhang Junqing,Zhang Zhongfu,Du Xuesong.A DIRECT TRANSFORMATION FROM GEOCENTRIC CARTESIAN TO GEODETIC COORDINATES[J].Journal of Geodesy and Geodynamics,2007,27(2):37-42. |
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| Authors: | Li Yanxing Zhang Jinghua Zhang Junqing Zhang Zhongfu Du Xuesong |
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| Institution: | First Crust Monitoring and Application Center, CEA, Tianjin 300180 |
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| Abstract: | On the basis of the analysis of the geometric relation between the geodetic and geocentric coordinates,a tangent quartic equation of geodetic latitude is established and thus the geodetic latitude can be solved directly.The algorithm for solving the quartic equation is simple.The calculated results indicate that the method is better than the existent iterative methods and the direct transformation method in calculating accuracy and efficiency. |
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| Keywords: | geocentric coordinates geodetic coordinates coordinate transformation quartic equation uniqueness of solution |
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