短弧长积分法与平均加速度法的比较分析

黄强; 范东明

doi:10.3969/j.issn.0258-2724.2013.03.010

短弧长积分法与平均加速度法的比较分析

doi: 10.3969/j.issn.0258-2724.2013.03.010

黄强,
范东明

基金项目:

中央高校基本科研业务费专项资金资助项目(SWJTU12BR012)

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- 文章访问数: 793
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出版历程
- 收稿日期: 2012-06-07
- 刊出日期: 2013-06-25

Comparison of Short Arc Integral Approach and Average Acceleration Approach in Gravity Field Recovery

摘要

摘要: 为比较短弧长积分法和平均加速度法在卫星重力反演中的效果,用Fortran程序语言分别基于短弧长积分法和平均加速度法编写了2套计算程序,对GOCE(重力场和静态海洋环流探测)卫星精密科学轨道进行了反演计算,得到了2组90阶次的重力场模型Model_Arc(短弧长积分法)和Model_Acc(平均加速度法).结果表明:Model_Acc大地水准面阶误差最大在80阶仅4 cm,而Model_Arc在90阶处达到10 cm;2个模型总体上都比用CHAMP和GRACE卫星的轨道数据反演的模型精度高,Model_Acc在80阶次以前比GO_CONS_GCF_2_TIM_R3精度高,但平均加速度法耗时比短弧长积分法长.
- 短弧长积分法 /
- 平均加速度法 /
- 重力反演 /
- GOCE(重力场和静态海洋环流探测)
Abstract: In order to compare the short arc integral approach with the average acceleration approach, two Fortran programs were compiled respectively. Two 90 degrees and orders gravity field models, Model_Arc (for the short arc integral approach) and Model_Acc (for the average acceleration approach), were recovered based on the programs and GOCE (gravity field and steady-state ocean circulation explorer) orbits. The results show that the maximal geoid error is respectively 4 cm at 80 degrees to the Model_Acc and 10 cm at 90 degrees to the Model_arc, the precisions of the Model_Acc and Model_Arc are higher than those of the models based on CHAMP (challenging mini-satellite payload) and GRACE (gravity recovery and climate experiment) orbits. The superiority of the Model_Acc over model GO_CONS_GCF_2_TIM_R3 is accuracy before 80 degrees, while the superiority of the Model_Arc over the Model_Acc is consumed time.
- short arc integral approach /
- average acceleration approach /
- gravity recovery /
- GOCE (gravity field and steady-state ocean circulation explorer)

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参考文献(15)

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文章访问数: 793
HTML全文浏览量: 47
PDF下载量: 354
被引次数: 0

短弧长积分法与平均加速度法的比较分析

doi: 10.3969/j.issn.0258-2724.2013.03.010

计量

出版历程

Comparison of Short Arc Integral Approach and Average Acceleration Approach in Gravity Field Recovery

计量

出版历程

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