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  1. Article

    Open Access

    Global marine gravity anomalies from multi-satellite altimeter data

    In this study, China’s first altimeter satellite Haiyang-2A (HY-2A) data combined observations from CryoSat-2, SARAL/AltiKa, and Jason-1&2 are used to calculate the global (60°S–60°N) marine deflections of the...

    **aoyun Wan, Ruijie Hao, Yongjun Jia, **ng Wu, Yi Wang in Earth, Planets and Space (2022)

  2. No Access

    Article

    Recovering Bathymetry of the Gulf of Guinea Using Altimetry-Derived Gravity Field Products Combined via Convolutional Neural Network

    Traditional methods of bathymetry inversion from altimetry data often use gravity anomalies and/or vertical gravity anomaly gradients. These two gravity products are usually computed from vertical deflections;...

    Richard Fiifi Annan, **aoyun Wan in Surveys in Geophysics (2022)

  3. Article

    Open Access

    Assessment of HY-2A GM data by deriving the gravity field and bathymetry over the Gulf of Guinea

    Nine cycles of Haiyang-2A (HY-2A) IGDR (Interim Geophysical Data Record) data are used to derive gravity products over the Gulf of Guinea (15° W–5° E, 4° S–4° N). Firstly, the sea surface heights (SSH) and ver...

    **aoyun Wan, Richard Fiifi Annan, Wenbin Wang in Earth, Planets and Space (2020)

  4. No Access

    Article

    Sensitivity analysis of gravity anomalies and vertical gravity gradient data for bathymetry inversion

    Bathymetry is the measurement of the water depth similar to underwater topography. Gravity anomaly and vertical gravity gradient are important data used to inverse bathymetry. In this study, we investigate the...

    **aoyun Wan, Jiangjun Ran, Shuanggen ** in Marine Geophysical Research (2019)

  5. No Access

    Chapter and Conference Paper

    Navigation Using Invariants of Gravity Vectors and Gravity Gradients

    The paper develops and analyzes the application of invariants of gravity vectors and gravity gradients in gravity matching navigation. Compared with the traditional method based on gravity gradient tensors, th...

    **aoyun Wan, **hai Yu in China Satellite Navigation Conference (CSN… (2014)

  6. No Access

    Article

    The integral formulas of the associated Legendre functions

    A new kind of integral formulas for \({\bar{P}_{n,m} (x)}\) is derived from the addition theorem about the Legendre F...

    **hai Yu, **aoyun Wan, Yanyan Zeng in Journal of Geodesy (2012)