| GOCE??????????????????????? |
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| 引用本文： | 苏勇,范东明,黄强.GOCE???????????????????????[J].大地测量与地球动力学,2014,34(3):151-154. |
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| 作者姓名： | 苏勇 范东明 黄强 |
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| 作者单位： | 西南交通大学地球科学与环境工程学院，成都 611756 |
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| 基金项目： | 高等学校博士学科点专项科研基金项目（2012018412006）；中央高校基本科研业务费专项资金项目（SWJTU10ZT02，SWJTU12BR012）；西南交通大学博士研究生创新基金项目 |
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| 摘 要： | ??????????????????????????????????????????????????????????????????????????GOCE????????????????????GOCE????????????????????????????????????????????????????????????????????????????“???-???”?????????????????????????????
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| 关 键 词： | GOCE???? ??????? ?????????? ???????? ?????? |
| 收稿时间： | 2013-09-26 |
COORDINATE SYSTEM CONVERSION OF GOCE GRADIENTS
DATA AND ERROR ANALYSIS |
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| Su Yong,Fan Dongming,Huang Qiang.COORDINATE SYSTEM CONVERSION OF GOCE GRADIENTS
DATA AND ERROR ANALYSIS[J].Journal of Geodesy and Geodynamics,2014,34(3):151-154. |
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| Authors: | Su Yong Fan Dongming Huang Qiang |
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| Institution: | Faculty of Geoscience and Environment Engineering，Southwest Jiaotong University，Chengdu 611756 |
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| Abstract: | The gravitational gradients along the orbit observed by GOCE satellite is given in the gradiometer coordinate system（GRF）while the Earth’s gravity field model from gradients is generally in non instrument coordinate system.Due to GOCE can not measure full tensor gradient efficiently，it is necessary to replace VXY、VYZ as model values and to converse coordinate system of gradient.Therefore，in the rotation process，the error of the gradients data and the error of the rotation matrix have be taken into account.A pointwise rotation model of gradients in various coordinate systems and analysis the impact of various errors in conversion process of gradients were described，and gradients tensor rotation strategy is discussed simultaneously.Actual processing results show that the attitude error of the GOCE meets the design requirements，but the quality of GOCE gradients tensor，is not good for containing a large number of low frequency colored noises，which needs to filter before conversion.In addition，“remove restore” method can significantly improve the accuracy. |
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| Keywords: | GOCE satellite gravitational gradient tensor rotation point-wise rotation error analysis |
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