An improved multi-surface function method with residual constraint for the fusion of shipborne and satellite altimetry derived gravity data

被引：0
|
作者：
Zhao C. [1 ]
Jin T. [1 ,2 ,3 ]
Qin P. [4 ]
Yang L. [1 ]
机构：
[1] School of Geodesy and Geomatics, Wuhan University, Wuhan
[2] Hubei Luojia Laboratory, Wuhan
[3] Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, Wuhan
[4] Guangzhou Marine Geological Survey, Guangzhou
来源：
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2023年 / 52卷 / 04期
基金：
中国国家自然科学基金;
关键词：
least square collocation; multi-surface function method; residual constraint; satellite altimetry; shipborne gravity;
D O I：
10.11947/j.AGCS.2023.20210444
中图分类号：
学科分类号：
摘要：
In order to obtain accurate regional gravity field, it is necessary to fuse multi-source gravity data. In this study, an improved analytical fusion method based on multi-surface functions by introducing residual constraint factors is proposed. Taken the surrounding the Japanese archipelago area as example, collecting the shipborne gravity data and satellite altimetry derived gravity field model, several factors which affect the accuracy of fusion results, including the block size, the quantity and distribution of the fused shipborne gravity data, are analyzed. And with optimal above factors, the fused results of the improved method are compared with those of the least square collocation method and the multi-surface function method. Compared to the shipborne gravity data for verification, the improved method with residual constraint has the best accuracy, as well as the smallest extreme values and standard deviations. Furthermore, the improved method reduced the discrepancy of two kinds of data near the control shipborne measuring points, and extrapolate to the other areas to improve the accuracy of satellite altimetry derived gravity model with reasonable distributed residuals. © 2023 SinoMaps Press. All rights reserved.
引用
收藏
页码：605 / 613
页数：8
相关论文
共 30 条
  • [1] LI Jiancheng, CHEN Junyong, NING Jinsheng, Et al., The Earth's gravitational field approximation theory and the determination of China 2000 quasi-geoid, (2003)
  • [2] HUANG Motao, The determination and application of marine gravity field[M], (2005)
  • [3] HUANG Motao, LIU Min, OUYANG Yongzhong, Et al., Effect of external disturbing gravity field on spacecraft guidance and surveying line layout for marine gravity survey, Acta Geodaetica et Cartographica Sinica, 45, 11, pp. 1261-1269, (2016)
  • [4] HU Minzhang, LI Jiancheng, JIN Taoyong, Et al., Recovery of bathymetry over China Sea and its adjacent areas by combination of multi-source data, Geomatics and Information Science of Wuhan University, 40, 9, pp. 1266-1273, (2015)
  • [5] FAN Diao, LI Shanshan, MENG Shuyu, Et al., Bathymetric prediction from multi-source satellite altimetry gravity data, Journal of Geodesy and Geoinformation Science, 2, 1, pp. 49-58, (2019)
  • [6] ZHANG Shengjun, Research on determination of marine gravity anomalies from multi-satellite altimeter data, (2016)
  • [7] YANG Yuanxi, XU Tianhe, XUE Shuqiang, Progresses and prospects of marine geodetic datum and marine navigation in China, Journal of Geodesy Geoinformation Science, 1, 1, pp. 16-24, (2018)
  • [8] LIU Min, HUANG Motao, OUYANG Yongzhong, Et al., Development and prospect of air-sea gravity survey and lts applications, part I: objective, significance and technical system, Hydrographic Survering and Charting, 37, 2, pp. 1-5, (2017)
  • [9] WU Yihao, Regional gravity field modeling from heterogeneous data sets by using Possion wavelets radial basis functions, (2016)
  • [10] ZHAI Zhenhe, A study of the fusion algorithms of muti-source gravity data in coastal areas, (2009)
123