The rotation of the gravity potential on the Earth's gravity field recovery

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	The rotation of the gravity potential on the Earth's gravity field recovery
	Cheng, L. Y. ; Xsu, H. Z.
刊名	Chinese Journal of Geophysics-Chinese Edition
	2006
期号	1 页码:93-98
中文摘要	We analyze the effect of approximate velocity in the formula of the rotation of the gravity potential, which is caused by the Earth rotation. We compute the difference between the satellite ephemeris's velocity and numerical integral's velocity. The ephemeris data come from GFZ's Rapid Science Orbit, TUM's Reduced-Dynamic Orbit, and GFZ's Post-processed Science Orbit respectively. The integral data are obtained based on the reference gravity Field models EGM96, EIGEN2, and EIGEN-CGO1C, respectively. The fitting between ephemeris velocity and integral velocity depended on EIGEN2 reference gravity field model is better than the EGM96 and EIGEN-CGO1C model. The variations of velocity difference have obvious periodicity, which coincides with the satellite orbit period. When the disturbing potential of 1m(2)/s(2) accuracy, or the approximate velocity of accuracy less 2mm/s in the formula of the rotation of the gravity potential is required, the satellite orbit data not satisfied the potential rotation computing demand are rejected from the GFZ's Rapid Science Orbit and TUM's Reduced-Dynamic Orbit. If the disturbing potential is desired 0.5m(2)/s(2) at satellite track, the satellite velocity required in formula of the rotation of the gravity potential should be re-computed or the GFZ's Post-processed Science Orbit is adopted.
原文出处	://WOS:000235069100013
公开日期	2012-04-11
内容类型	期刊论文
源URL	[http://ir.whigg.ac.cn/handle/342008/3017]
专题	测量与地球物理研究所_其他_期刊论文
推荐引用方式 GB/T 7714	Cheng, L. Y.,Xsu, H. Z.. The rotation of the gravity potential on the Earth's gravity field recovery[J]. Chinese Journal of Geophysics-Chinese Edition,2006(1):93-98.
APA	Cheng, L. Y.,&Xsu, H. Z..(2006).The rotation of the gravity potential on the Earth's gravity field recovery.Chinese Journal of Geophysics-Chinese Edition(1),93-98.
MLA	Cheng, L. Y.,et al."The rotation of the gravity potential on the Earth's gravity field recovery".Chinese Journal of Geophysics-Chinese Edition .1(2006):93-98.