| 重力卫星时变重力场去相关滤波算法参数选择 |
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| 引用本文： | 崔立鲁,唐兴友,邹正波,宋哲,许文超. 重力卫星时变重力场去相关滤波算法参数选择[J]. 科学技术与工程, 2020, 20(1): 43-47 |
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| 作者姓名： | 崔立鲁 唐兴友 邹正波 宋哲 许文超 |
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| 作者单位： | 成都大学建筑与土木工程学院,成都 610106;武汉大学测绘学院,武汉 430079;成都大学建筑与土木工程学院,成都 610106;中国地震局地震研究所,地震大地测量重点实验室,武汉 430071 |
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| 基金项目： | 中国地震局基本科研业务费专项资助项目和中国地震局地壳应力研究所基本科研业务费专项资助项目(IS20186277);国家重点研发计划课题(2018YFC1503503)；国家自然基金(41704135)资助 |
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| 摘 要： | 由于重力场模型球谐系数高阶次项相关误差,利用GRACE(Gravity Recovery And Climate Experiment)时变重力场反演地表质量迁移的结果会呈现出显著的南北条带误差。而滑动窗口多项式滤波算法是处理相关误差的有效方法之一,为了提高该算法的去相关效果,本文根据对GRACE时变重力场模型数据的去相关处理结果,分析并选取该算法的最优参数。实验结果表明：GRACE时变重力场的起算阶数、滑动窗口宽度和多项式阶数应分别选取15阶、5个点和4阶。
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| 关 键 词： | 重力卫星 去相关滤波 滑动窗口 地表质量迁移 |
| 收稿时间： | 2019-05-14 |
| 修稿时间： | 2019-09-20 |
The Comparison Research on Gravity Satellite Time-variable Gravity Field De-correlation Filter Algorithm Parameter Selection |
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| Cui Lilu,Tang Xingyou,Zou Zhengbo,Song Zhe,Xu Wenchao. The Comparison Research on Gravity Satellite Time-variable Gravity Field De-correlation Filter Algorithm Parameter Selection[J]. Science Technology and Engineering, 2020, 20(1): 43-47 |
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| Authors: | Cui Lilu Tang Xingyou Zou Zhengbo Song Zhe Xu Wenchao |
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| Affiliation: | School of Architecture and Civil Engineering, Chengdu University,,,, |
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| Abstract: | Due to the correlation error of high order and degree term of gravity field model spherical harmonic coefficient, the ground mass migration inversion results is presented by stripe error by using GRACE(Gravity Recovery And Climate Experiment)time-variable gravity field data. The fitting polynomial filtering with sliding window is one of the effective methods to deal with correlation errors. In order to improve the de-correlation effect of this algorithm, the optimal parameters of this algorithm are analyzed and selected based on the de-correlation results of GRACE time-variable model data. The experimental results show that the de-correlatin starting order, sliding window size and fitting polynomial order respectively should be set for 15, 5 7, 4. |
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