jgg     2008 28 (1):  118-122    ISSN: 0412-1961  CN: 21-1139/TG BOTTLENECK AND RESEARCH STRATEGY OF DATA MANAGEMENT UNDER ITRF Liu Zhengcai 1,2) ;Zhu Jianjun 1) ;Xiao Benlin 1,3) ;Yi Chonghai 1) ; and Wang Huaiyu 4) 1)Department of Geomatics, Central South University, Changsha 4100832)Civil Engineering & Mechanics College, Xiangtan University, Xiangtan 4111053)School of Civil Engineering & Architecture, Hubei University of Technology, Wuhan 4300684)School of Vocational Technology, Xiangtan University, Xiangtan 411105 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null