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用Kaula线性摄动方法恢复CHAMP重力场模型 被引量：1

CHAMP GRAVITY FIELD RECOVERY WITH KAULA LINEAR PERTURBATION METHOD
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摘要 介绍了Kau la线性摄动方法的基本原理和算法,基于CHAMP几何法轨道和动力法轨道,给出了利用该方法恢复地球重力场模型的实现过程,分析了Kau la线性摄动方法在实际应用中需要注意的问题。基于德国慕尼黑技术大学提供的一个月的CHAMP几何法轨道和德国GFZ数据中心提供的快速科学轨道,计算出了50×50阶地球重力场模型CHAMP-Kau la1S,并与EIGEN-CG03C、EIGEN-CHAMP03S、EIGEN2、ENIGN1S、EGM96模型进行了比较。结果表明:X ISM-CHAMP1S模型精度明显优于相同阶次EIGEN1S模型,前40阶明显优于EGM96模型,而低于同阶次的EIGEN2和EIGEN-CHAMP03S模型精度。 The basic theory and algorithm of Kaula linear perturbation are introduced. The Earth gravity field recovery by use of Kaula linear perturbation method is studied from CHAMP kinematic orbits and dynamic orbits. Some problems related to its applications are pointed out. A 50 degree and order gravitational potential model CHAMP-Kaulal S is determined with kinematic orbits for one month provided by Technical University of Munich and rapid science orbits provided by GFZ. The comparisons among CHAMP-KaulalS, EIGEN-CG03C, EIGEN- CHAMP03S, EIGEN2, ENIGN1S and EGM96 are made. The results show that CHAMP-KaulalS model is more accurate than EIGEN1S at the same degree and order, more accurate than EGM96 in former 40 degree and order, and less accurate than EIGEN2 and EIGEN-CHAMP03S.
作者 徐天河 居向明
机构地区 西安测绘研究所 海军士官学校海测教研室
出处 《大地测量与地球动力学》 CSCD 北大核心 2006年第4期18-21,26,共5页 Journal of Geodesy and Geodynamics
基金 国家自然科学基金(4027400240474001)
关键词 Kaula线性摄动 地球重力场模型 动力法轨道 几何法轨道 快速科学轨道 Kaula linear perturb, earth gravitational field model, dynamic orbit, kinematic orbit, rapid science orbit
分类号 P227 [天文地球—大地测量学与测量工程]
  • 相关文献

参考文献16

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二级参考文献19

  • 1曾桢,胡雄,张训械,万卫星.电离层GPS掩星观测反演技术[J].地球物理学报,2004,47(4):578-583. 被引量：37
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  • 6Reubelt T, Austen G, Grafarend E W. Harmonic analysis of the earth's gravitational field by means of semi-continuous ephemeris of a low earth orbiting GPS-tracked satellite, case study: CHAMP.Journal of Geodesy, 2003,77: 257 ～ 278.
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  • 10Gerlach C, Sneeuw N, Visser P, et al. CHAMP gravity field recovery using energy balance approach. Advances in Geosciences, 2003,1:73～ 80.

共引文献67

同被引文献12

  • 1徐天河,杨元喜.利用CHAMP卫星几何法轨道恢复地球重力场模型[J].地球物理学报,2005,48(2):288-293. 被引量：45
  • 2徐天河,杨元喜.CHAMP轨道及加速度计误差对恢复重力场的影响[J].大地测量与地球动力学,2005,25(2):75-81. 被引量：6
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  • 5Howe E,et al. Analysis of one month of CHAMP state vector and accelerometer data for the recovery of the gravity potential[ J]. Advances in Geosciences, 2003,1 : 1 - 4.
  • 6Gerlach C, et al. CHAMP field recovery using the energy balance approach [ J]. Advances in Geosciences, 2003,1:73 - 80.
  • 7Gerlach C, et al. A CHAMP- only gravity field model from kinematical orbit using the energy integral [ J ]. Geophysical Research Letters, 2003,30(20) :2 037 -2 041.
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  • 10Yang Yuanxi, et al. Robust estimator for correlated observations based on bifactor equivalent weight [ J ]. Journal of Geodesy, 2002, 76: 353- 358.

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大地测量与地球动力学
2006年 第4期

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