海域重力异常模型的多尺度分析

doi:10.11947/j.AGCS.2024.20230309

测绘学报 ›› 2024, Vol. 53 ›› Issue (2): 274-285.doi: 10.11947/j.AGCS.2024.20230309

海域重力异常模型的多尺度分析

刘焕玲¹, 杨蔚然¹, 张放¹, 文汉江¹, 胡敏章², 蒋涛¹, 蔺文奇³, 黎晨曦⁴

1. 中国测绘科学研究院, 北京 100036;
2. 武汉引力与固体潮国家野外科学观测研究站, 湖北武汉 430071;
3. 武汉大学测绘学院, 湖北武汉 430079;
4. 湖南省测绘科技研究所, 湖南长沙 410007

收稿日期:2023-07-28 修回日期:2024-01-02 发布日期:2024-03-08
通讯作者: 文汉江 E-mail:wenhj@casm.ac.com
作者简介:刘焕玲(1986-),女,博士,副研究员,主要研究方向为卫星大地测量、物理大地测量。E-mail:liuhl@casm.ac.cn
基金资助:
国家重点研发计划（2021YFB3900200；2021YFB3900203）；国家自然科学基金（42074020）；武汉引力与固体潮国家野外科学观测研究站开放研究基金资助项目（WHYWZ202213）；中国测绘科学研究院基本科研业务费（AR2303）；湖南省自然资源厅科技项目（20230166CH）

Multi-scale analysis of gravity anomaly models in sea area

LIU Huanling¹, YANG Weiran¹, ZHANG Fang¹, WEN Hanjiang¹, HU Minzhang², JIANG Tao¹, LIN Wenqi³, LI Chenxi⁴

1. Chinese Academy of Surveying and Mapping, Beijing 100036, China;
2. Wuhan Gravitation and Solid Earth Tides National Observation and Research Station, Wuhan 430071, China;
3. School of Geodesy and Geomatics, Wuhan University, Wuhan 430079, China;
4. Hunan Institute of Surveying, Mapping Sciences and Technology, Changsha 410007, China

Received:2023-07-28 Revised:2024-01-02 Published:2024-03-08
Supported by:
The National Key Research and Development Program of China (Nos. 2021YFB3900200; 2021YFB3900203); The Natural Science Foundation of China (No. 42074020); Open Fund of Wuhan,Gravitation and Solid Earth Tides,National Observation and Research Station (No. WHYWZ202213); The Fundamental Research Funds for Chinese Academy of Surveying and Mapping (No. AR2303); Research Foundation of the Department of Natural Resources of Hunan Province (No. 20230166CH)

摘要/Abstract

摘要： 不同于传统的重力异常模型精度分析方法，本文以马里亚纳海沟区域（140°E—150°E，10°N—20°N）为例，利用DOG球面小波提取了DTU10、DTU17和SIO V32.1模型在不同波段内的重力异常信号，对模型间的差异进行了深入分析，并对基于径向基函数的不同深度、不同分辨率的多尺度分析进行了尝试。利用DOG球面小波对各模型多尺度分析的结果表明，随着尺度变小，模型间的差异在变大；DTU10、DTU17模型间的差异主要集中在10.9~43.6 km的波段内，分布在海岸、海沟、海底山附近，体现了Cryosat-2、Jason-1/GM观测数据和FES2014海潮模型的贡献；受模型构建方法不同、观测数据增多和波形重跟踪的影响，DTU17、SIO V32.1模型的差异大于DTU10、DTU17之间的差异。对传统径向基函数进行了改进，实现了多深度、多空间分辨率情况下径向基函数多尺度分析，结果略优于单一深度、单一空间分辨率径向基函数构建结果，有望应用于多源数据的重力场模型构建。

关键词: 卫星测高, 重力异常模型, 球面小波, 径向基函数, 多尺度分析

Abstract: Different from the traditional analysis method for gravity anomaly models, DOG (difference of Gauss) spherical wavelet is used to extract the gravity anomaly signals of DTU10, DTU17 and SIO V32.1 models in different bands for Mariana Trench area (140 °E-150°E, 10°N-20°N) as an example. The differences between the models are analyzed in depth. An initial attempt of multi-scale analysis in different depths and different resolutions based on RBF (radial basis function) are proposed. The results of multi-scale analysis using DOG spherical wavelet show that as the scale becomes smaller, the difference between the models becomes larger. The differences between DTU10 and DTU17 models are mainly concentrated in the band of 10.9~43.6 km, around the coast, trench and submarine mountain, which reflects the contribution of Cryosat-2, Jason-1/GM observation data and FES2014 ocean tide model. Due to the different methods for model construction, the increase of observations and the impact of waveform retracking, the difference between DTU17 and SIO V32.1 models is greater than that between DTU10 and DTU17. The traditional radial basis function is improved, and the multi-scale analysis of radial basis function under multi-depth and multi-spatial resolution is realized. The result is slightly better than that from single-depth and single-spatial resolution radial basis function. It is expected to be applied to the construction of gravity field model using multi-source data.

Key words: satellite altimetry, gravity anomaly model, spherical wavelet, radial basis function, multi-scale analysis

中图分类号:

P223

刘焕玲, 杨蔚然, 张放, 文汉江, 胡敏章, 蒋涛, 蔺文奇, 黎晨曦. 海域重力异常模型的多尺度分析[J]. 测绘学报, 2024, 53(2): 274-285.

LIU Huanling, YANG Weiran, ZHANG Fang, WEN Hanjiang, HU Minzhang, JIANG Tao, LIN Wenqi, LI Chenxi. Multi-scale analysis of gravity anomaly models in sea area[J]. Acta Geodaetica et Cartographica Sinica, 2024, 53(2): 274-285.

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海域重力异常模型的多尺度分析

Multi-scale analysis of gravity anomaly models in sea area

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