High Precision Vertical Deflection Over China Marginal Sea and Global Sea Derived from Multi-Satellite Altimeter  

作　　者：WANG Hubiao WANG Yong LU Yang 

机构地区：[1]Institute of Geodesy and Geophysics, Chinese Academy of Sciences,340 Xudong Street, Wuhan 430077,China

出　　处：《Geo-Spatial Information Science》2008年第4期289-293,共5页地球空间信息科学学报（英文）

基　　金：Supported by the National Nature Science Foundation of China（No. 40474030, 40674013）.Acknowledgements Thanks to professor Hwang at the Department of Civil Engineering, National Chiao Tung University for altimeter data.

摘　　要：On the basis of gravity field model （EIGEN_CG01C）, together with multi-altimeter data, the improved deflection of the vertical gridded in 2＇×2＇ in China marginal sea and gridded in 5＇×5＇ in the global sea was determined by using the weighted method of along-track least squares, and the accuracy is better than 1.2^# in China marginal sea. As for the quality of the deflection of the vertical, it meets the challenge for the gravity field of high resolution and accuracy, it shows that, compared with the shipboard gravimetry in the sea, the accuracy of the gravity anomalies computed with the marine deflection of the vertical by inverse Vening-Meinesz formula is 7.75 m.s ^-2.根据重力场模型(EIGEN_CG01C ) ，和多高度表数据，在 2 &#8242;× 2 &#8242; 的垂直 gridded 的改进偏转在在 5 &#8242;× 5 &#8242; 的中国边缘海和 gridded由最不使用沿着轨道的加权的方法在全球海是坚定的摆平，并且精确性比 1.2 &#8243; 好在中国边缘海。至于 vertical 的偏转的质量，它为高分辨率和精确性的重力场遇见挑战。它证明与在海的舷侧重力测量学相比，严肃异例的精确性由反的 Vening-Meinesz 与 vertical 的海洋的偏转计算了公式是 7.75 m · s <SUP>&#8722;2</SUP> 。

关 键 词：ALTIMETRY along-track the weighted least-squares deflection of the vertical 

分 类 号：P223[天文地球—大地测量学与测量工程]