上海天马65m射电望远镜归心测量  

Local Survey of Shanghai Tianma 65-m Radio Telescope

作　　者：李金岭[1] 熊福文[2] 余成磊 张津维[1,4] 郭丽[1] 范庆元[1] 

机构地区：[1]中国科学院上海天文台,上海200030 [2]上海市地质调查研究院,上海200072 [3]莱卡测量系统上海技术中心,上海201203 [4]中国科学院大学,北京100049

出　　处：《天文学进展》2014年第2期246-258,共13页Progress In Astronomy

基　　金：国家自然科学基金(11178024;11373060;U1331205);探月工程(嫦娥三号);上海市科学技术委员会(06DZ22101);国家863计划(2012AA121603)

摘　　要：对新近落成的上海天马65 m射电望远镜进行了归心测量,通过观测资料解析获得了天线参考点毫米级精度(形式误差)的地心三维坐标,并表明了轴线偏差在3 mm水平上不显著。具体地,参考点在ITRF2008系统中的坐标为:[X Y Z]=[-2 826 708.604 54 679 237.054 23 274 667.531 4]m±[420.450.43]mm,参考历元为2013年6月29日UTC0h。轴线偏差为ˉf=(2.95±3.26)mm。这为后续的天线指向模型建立、天线定向引导、VLBI互相关条纹搜寻和观测资料科学应用解析等提供了重要参考,也为监测天线地基沉降与水平位移、天线轨道和结构变形等提供了历元资料记录。A geodetic local survey was implemented at the newly constructed Shanghai Tianma 65-m radio telescope. The geocentric three-dimensional coordinates of the reference point of this telescope in the precision of millimeters（formal error） were determined, and the axis-offset was shown not significant on the precision level of 3 mm. Specifically, the coordinates of the reference point in ITRF2008 are as follows,[X Y Z]=[-2 826 708.604 54 679 237.054 23 274 667.531 4]m ±[0.420.450.43]mm.The reference epoch is taken as UTC 0h, 29 June 2013. The axis-offsetˉf is determined as the following,ˉf =（2.95 ± 3.26） mm.The outcome provides important reference to the subsequent activities of antenna maintenance and scientific application, including the establishment of precise antenna orientation model, orientation guidance, fringe searching in data cross-correlation, analysis and application studies of VLBI observations. It is also important archive data for monitoring possible subsidence and lateral displacement of antenna foundation as well as deformation of antenna tracking-rail and structure.

关 键 词：VLBI GPS 参考点 轴线偏差 归心测量 

分 类 号：P228.6[天文地球—大地测量学与测量工程]