%0 Journal Article
%T THINKING ON DATUM OF REGIONAL GRAVITY FIELD VARIATION<br>关于区域重力场变化基准的思考
%A Sun Shaoan
%A Kang Kaixuan
%A Huang Bangwu
%A <br>孙少安
%A 康开轩
%A 黄邦武
%J 大地测量与地球动力学
%D 2012
%I 
%X A space-time datum which is a reference frame plays an important role in the study of regional gravity field variations.Because gravity values related with different space-time datum will be different,whether the datum is reasonable or not,it has a crucial influence on the measured results of gravity variation.We study the characters of space-time datum,estimate the advantages and disadvantages of applicability for the space-time datum.We also give the standard for rational space-time datum of regional gravity field,which could play a key role in valuing the results of gravity variation.The obtained results will effectively improve the quality of our previous results on gravity variation and lessen the difference between calculated modeling and real situation.
%K space-time datum
%K regional gravity net
%K regional gravity field
%K reference system
%K gravity variation<br>
%K face=Verdana>时空基准
%K 区域重力网
%K 区域重力场
%K 参考系统
%K 重力变化
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=DA72A78627FE64EAA572951EA05D274A&jid=73A1A428591E600EF664B596512A2997&aid=08E77DC9FB8896FCB4EED7D8E95F21FA&yid=99E9153A83D4CB11&vid=9971A5E270697F23&iid=CA4FD0336C81A37A&sid=BCA2697F357F2001&eid=A04140E723CB732E&journal_id=1671-5942&journal_name=大地测量与地球动力学&referenced_num=0&reference_num=7