A DIRECT TRANSFORMATION FROM GEOCENTRIC CARTESIAN TO GEODETIC COORDINATES
Li Yanxing; Zhang Jinghua; Zhang Junqing; Zhang Zhongfu; and Du Xuesong
First Crust Monitoring and Application Center, CEA, Tianjin 300180
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.
Key words ：
geocentric coordinates
geodetic coordinates
coordinate transformation
quartic equation
uniqueness of solution
Received: 01 January 1900
Corresponding Authors:
Li Yanxing
Cite this article:
Li Yanxing,Zhang Jinghua,Zhang Junqing et al. A DIRECT TRANSFORMATION FROM GEOCENTRIC CARTESIAN TO GEODETIC COORDINATES[J]. , 2007, 27(2): 37-42.
Li Yanxing,Zhang Jinghua,Zhang Junqing et al. A DIRECT TRANSFORMATION FROM GEOCENTRIC CARTESIAN TO GEODETIC COORDINATES[J]. jgg, 2007, 27(2): 37-42.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2007/V27/I2/37
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