An improved velocity determination method based on GOCE kinematic orbit  

作　　者：Jiang Nan Xu Tianhe 

机构地区：[1]School of Geology Engineering and Surveying,Chang'an University [2]State Key Laboratory of Geo-information Engineering [3]State Key Laboratory of Geodesy and Earth's Dynamics [4]Xi'an Research Institute of Surveying and Mapping

出　　处：《Geodesy and Geodynamics》2013年第2期47-52,共6页大地测量与地球动力学（英文版）

基　　金：supported by the National Natural Science Foundation of China(41174008);the Open Foundation of State Key Laboratory of Geodesy and Earth’s Dynamics(SKLGED2013-4-2-EZ);the Foundation for the Author of National Excellent Doctoral Dissertation of China(2007B51)

摘　　要：A new velocity determination algorithm with combination of remove and restore method, outliers detection method and Chebyshev fitting method with redundant observations is proposed. An optimal selection of number of sampling points is given. The result shows that, when the number of sampling points is 19, the three-dimension （3D） interpolation precision of velocity is superior to 0.1 mm/s, which is above 3 times better than that of Chebyshev fitting method with redundant observations and far better than those of the conventional interpolation methods.A new velocity determination algorithm with combination of remove and restore method, outliers detection method and Chebyshev fitting method with redundant observations is proposed. An optimal selection of number of sampling points is given. The result shows that, when the number of sampling points is 19, the three-dimension （3D） interpolation precision of velocity is superior to 0.1 mm/s, which is above 3 times better than that of Chebyshev fitting method with redundant observations and far better than those of the conventional interpolation methods.

关 键 词：GOCE kinematic orbit Chebyshev fitting remove and restore method outliers detection 

分 类 号：P312.1[天文地球—固体地球物理学]