固体潮对测站位移影响的理论研究  

THEORETICAL RESEARCH ON EFFECT OF EARTH TIDE ON STATION DISPLACEMENT

作　　者：张捍卫[1] 郑勇[2] 赵方权[2] 

机构地区：[1]中国科学院测量与地球物理研究所,武汉430077 [2]郑州信息工程大学测绘学院大地系,郑州450052

出　　处：《大地测量与地球动力学》2003年第3期98-103,共6页Journal of Geodesy and Geodynamics

基　　金：地球空间环境与大地测量教育部重点实验室资助项目 (0 2 -0 9-15 ) ;国家重大科学工程"中国地壳运动观测网络"项目

摘　　要：重新推导了IERS2 0 0 0中关于固体潮对测站位移影响的所有公式 ,指出 :在时间域内二阶和三阶引潮力位对测站位移影响的公式中 ,理论上应以测站地心距代替地球赤道半径。利用最新的精密引潮位展开代替IERS2 0 0 0采用的Cartwright&Tayler(1971)潮汐展开 ,重新计算了田谐潮波和带谐潮波的相对频率特性的改正。计算表明 ,以上两种修正在亚毫米量级上与IERS2 0 0 0存在差异 ,这在目前的空间大地测量技术中是必须考虑的。The research on theoretical model of tidal effect on station displacement is an important part of data analysis in space geodesy.In this paper, a series of formulas of earth tidal effect on station displacement recommended in IERS2000 were re-deduced. It is pointed out that mean earth radius should be replaced by the station geocentric distance in the formulas of second- and third-order tide-generating potential(TGP) influence on station displacement in the time domain. Finally, the corrections of the relative frequency characteristic of tesseral and zonal harmonic waves are re-calculated by using the precise development of TGP presented lately to replace the TGP of Cartwright & Tayler(1971)development adopted in the IERS2000.The results indicates that there are the differences of both the corrections in the sub-millimeter level from that in IERS2000,it is necessary to account those differences in present space geodesy.

关 键 词：测站位移 固体潮 LOVE数 时间域 引潮力位 

分 类 号：P312.4[天文地球—固体地球物理学]