一种顾及地理纬度空间互补的多域组合GRACE去条带滤波方法

doi:10.11947/j.AGCS.2024.20240072

测绘学报 ›› 2024, Vol. 53 ›› Issue (11): 2149-2165.doi: 10.11947/j.AGCS.2024.20240072

• 大地测量学与导航 • 上一篇

一种顾及地理纬度空间互补的多域组合GRACE去条带滤波方法

吴晓辉¹(), 吴云龙¹^,²(), 徐国栋¹, 易爽³, 刘素兰¹, 张豹⁴, 钟玉龙¹, 王力哲⁵

^1.中国地质大学（武汉）地理与信息工程学院，湖北　武汉　430074
^2.中国地质大学（武汉）地质探测与评估教育部重点实验室，湖北　武汉　430074
^3.中国科学院大学计算地球动力学重点实验室，北京　100094
^4.武汉大学测绘学院，湖北　武汉　430079
^5.中国地质大学（武汉），湖北　武汉　430074

收稿日期:2024-02-22 发布日期:2024-12-13
通讯作者: 吴云龙 E-mail:wuxiaohui@cug.edu.cn;wuyunlong@cug.edu.cn
作者简介:吴晓辉（2002—），男，硕士生，研究方向为卫星重力数据处理。　E-mail：wuxiaohui@cug.edu.cn
基金资助:
国家自然科学基金(42274111)

A multi-domain combined GRACE de-striping filtering method taking into account spatial complementarity of geographic latitude

Xiaohui WU¹(), Yunlong WU¹^,²(), Guodong XU¹, Shuang YI³, Sulan LIU¹, Bao ZHANG⁴, Yulong ZHONG¹, Lizhe WANG⁵

^1.School of Geography and Information Engineering, China University of Geosciences, Wuhan 430074, China
^2.Key Laboratory of Geological Survey and Evaluation of Ministry of Education, China University of Geosciences, Wuhan 430074, China
^3.Key Laboratory of Computational Geodynamics, University of Chinese Academy of Sciences, Beijing 100094, China
^4.School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China
^5.China University of Geosciences, Wuhan 430074, China

Received:2024-02-22 Published:2024-12-13
Contact: Yunlong WU E-mail:wuxiaohui@cug.edu.cn;wuyunlong@cug.edu.cn
About author:WU Xiaohui (2002—), male, postgraduate, majors in satellite gravity data processing.　E-mail: wuxiaohui@cug.edu.cn
Supported by:
The National Natural Science Foundation of China(42274111)

摘要/Abstract

摘要：

制约时变卫星重力场模型应用效能的一个重要问题是球谐系数中的噪声影响，主要表现为在地球表层质量场信号恢复中受到南北方向的条带和随机噪声。为了有效抑制南北方向条带噪声，本文提出了一种多域组合GRACE去条带滤波器。该滤波器综合S&W去相关滤波器和SSAS滤波器的优势，采用最小二乘法和多通道奇异谱分析，兼顾频谱域和空间域的信号特征。研究结果表明，相比于传统滤波器，本文提出的组合滤波器能够适应不同纬度的滤波需求，有效消除中高纬度和低纬度的南北方向噪声影响，保留更多地球物理信号，提高观测小尺度信号的可能性。

关键词: GRACE, 条带噪声, 空间互补, 重构滤波器

Abstract:

An important issue that limits the effectiveness of the application of time-varying satellite gravity field model is the influence of noise in the spherical harmonic coefficients, which is mainly manifested in the signal recovery of the Earth's surface mass field by the north-south striping (NSS) noise and random noise. In order to effectively suppress the NSS noise, a multi-domain combined gravity recovery and climate experiment (GRACE) de-striping filter is proposed in this paper, which combines the advantages of the Swenson & Whar (S&W) decorrelation filter and the multi-channel singular spectrum analysis in the spatial domain (SSAS) filter, and utilizes the least-squares method and the multichannel singular spectrum analysis to take into account the signal characteristics in the spectral and spatial domains. The results show that, compared with the traditional filters, the combined filter proposed in this paper can adapt to the filtering needs of different latitudes, effectively eliminate the NSS noise effects in the middle and high latitudes and low latitudes, retain more geophysical signals, and improve the possibility of observing small-scale signals.

Key words: GRACE, stripe noise, spatial complementarity, reconstruction filter

中图分类号:

P228

吴晓辉, 吴云龙, 徐国栋, 易爽, 刘素兰, 张豹, 钟玉龙, 王力哲. 一种顾及地理纬度空间互补的多域组合GRACE去条带滤波方法[J]. 测绘学报, 2024, 53(11): 2149-2165.

Xiaohui WU, Yunlong WU, Guodong XU, Shuang YI, Sulan LIU, Bao ZHANG, Yulong ZHONG, Lizhe WANG. A multi-domain combined GRACE de-striping filtering method taking into account spatial complementarity of geographic latitude[J]. Acta Geodaetica et Cartographica Sinica, 2024, 53(11): 2149-2165.

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参考文献 30

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方法	维多利亚湖	纳尔马达河	新疆某地区
P3M10	17.742 3	9.779 4	6.775 1
SSAS	14.955 5	7.235 8	7.984 4
DSS	11.136 9	4.854 9	4.799 6
P3M10+DDK6	7.800 8	5.772 2	5.476 3
SSAS+DDK6	7.262 6	3.829 7	6.689 6
DSS+DDK6	6.076 3	3.397 3	4.302 3
DDK6	8.847 6	5.054 5	6.885 6

方法	维多利亚湖	纳尔马达河	新疆某地区
CSR Mascon	5.365 7	2.266 7	3.245 8
Mascon GSFC	8.516 4	3.819 7	2.378 4
JPL Mascon	6.479 9	3.261 9	3.178 8
P3M10	13.493 1	11.505 2	6.094 5
SSAS	9.570 7	7.636 9	7.253 9
DSS	7.209 1	6.495 3	4.291 9
P3M10+DDK6	6.091 6	8.308 2	4.715 6
SSAS+DDK6	5.017 1	5.346 4	5.653 1
DSS+DDK6	6.491 1	5.276 6	3.678 5
DDK6	5.647 8	6.437 2	5.872 3

一种顾及地理纬度空间互补的多域组合GRACE去条带滤波方法

A multi-domain combined GRACE de-striping filtering method taking into account spatial complementarity of geographic latitude

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