A method for solving along-track vertical deflection based on SWOT wide-swath simulated data

Chen Xu; Kong Xiangxue; Zhou Runsheng; Wang Yong; Zhang Shengjun

doi:10.12284/hyxb2023138

Volume 45 Issue 11

Nov. 2023

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Chen Xu，Kong Xiangxue，Zhou Runsheng, et al. A method for solving along-track vertical deflection based on SWOT wide-swath simulated data[J]. Haiyang Xuebao，2023, 45(11)：175–184 doi: 10.12284/hyxb2023138

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A method for solving along-track vertical deflection based on SWOT wide-swath simulated data

doi: 10.12284/hyxb2023138

1.
School of Resources and Civil Engineering, Northeastern University, Shenyang 110819, China
2.
Liaoning Earthquake Agency, Shenyang 110031, China

Received Date: 2023-03-14
Rev Recd Date: 2023-06-28

Available Online: 2023-10-20

Publish Date: 2023-11-30

Abstract

Abstract

The SWOT was successfully launched on December 16, 2022, which is a new generation of wide-swath altimetry satellite. The SWOT is expected to provide two-dimensional strip hight informations of global sea area and inland water surface. It is expected to solve the problem of traditional one-dimensional observations, which is inconsistent accuracy in solving the directional component of the vertical deflection. In this paper, we adopted SWOT simulated data to solve along-track vertical deflection by jointing multi-directions, and proposed two upgrading schemes according to the characteristics of the simulated data: one is to increase the distance of joint observations appropriately, and the other is to assign weights according to the quality of SWOT strip data separately. The vertical deflection of the SWOT simulated data solved is checked with EGM2008 model, the standard deviation of the north component and east component are 0.416 8, 0.472 9 arcsec respectively. The solution quality is better than other schemes, it proves the feasibility of improved schemes. The method is also validated using Tiangong II wide-swath data. So it can be applied to SWOT real data to solve the vertical deflection.
- SWOT,
- wide-swath interferometer,
- simulated data,
- vertical deflection

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References

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