%0 Journal Article
%T A DIRECT TRANSFORMATION FROM GEOCENTRIC CARTESIAN TO GEODETIC COORDINATES<br>一种由地心直角坐标到大地坐标的直接转换
%A Li Yanxing
%A Zhang Jinghua
%A Zhang Junqing
%A Zhang Zhongfu
%A Du Xuesong
%A <br>李延兴
%A 张静华
%A 张俊青
%A 张中伏
%A 杜雪松
%J 大地测量与地球动力学
%D 2007
%I 
%X 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.
%K geocentric coordinates
%K geodetic coordinates
%K coordinate transformation
%K quartic equation
%K uniqueness of solution<br>地心直角坐标
%K 大地坐标
%K 坐标转换
%K 四次方程
%K 解的惟一性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=1231049022E3817D&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=42425781F0B1C26E&eid=ECE8E54D6034F642&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=2&reference_num=16