%0 Journal Article
%T DISCUSSION ON RELATION BETWEEN DATUM CONDITION AND COORDINATE SYSTEM<br>基准与坐标系之间关系的探讨
%A Zhao Yihan
%A Wu Jicang
%A Wang Wei
%A <br>赵一晗
%A 伍吉仓
%A 王 伟
%J 大地测量与地球动力学
%D 2007
%I 
%X Because the free net adjustment model is rank-defect,the normal equation derived with the LS method has an infinite number of solutions.Geodetically,the configuration of geodetic network can not be fixed.In order to obtain a unique configuration of geodetic network,some datum conditions should be introduced into.In other words,coordinate system will be determined if datum is given.Therefore datum must involve some information for defining coordinate system.Three kinds of datum conditions and a general solution in free geodetic network adjustment are presented here,and a formula about the relation between datum condition and coordinate system is test through an example.
%K free network
%K datum condition
%K coordinate system
%K inner adjustment constraint matrix
%K normal equation<br>自由网
%K 基准
%K 坐标系
%K 内部约束阵
%K 法方程
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=562CFF51B2464B60&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=CFAC5CB624A41AFD&eid=39EEF47180459690&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=0&reference_num=15