卫星测高反演重力场在西太平洋海域的应用

发布时间：2018-03-10 06:51

本文选题：测高卫星　切入点：海洋重力　出处：《中国海洋大学学报(自然科学版)》2017年06期 　论文类型：期刊论文

【摘要】：利用高精度卫星测高数据反演重力是获取海洋重力异常的重要方法。本文介绍了自2008年以来新一代高精度测高卫星的相关信息。在此基础上,联合多颗新型卫星,进行交叉点平差,通过中心差分代替常规Sandwell方法计算垂线偏差,利用改进的逆Vening-Meinesz法和Stokes数值反解法对西太平洋某区域进行了重力场反演。反演结果与NGDC提供的船测重力值比较表明,逆Vening-Meinesz法计算误差小于Stokes数值反解法。通过添加随机噪声数值实验,进一步证明逆Vening-Meinesz法对于测高数据误差的抗差能力更强,在研究区的重力异常计算结果可信度较高。
[Abstract]:Gravity inversion using high-precision satellite altimetry data is an important method to obtain marine gravity anomaly. This paper introduces the relevant information of a new generation of high-precision altimetry satellites since 2008. On this basis, several new satellites are combined. The perpendicular deviation is calculated by the center difference instead of the conventional Sandwell method. The inversion of gravity field in a certain area of the western Pacific Ocean is carried out by using the improved inverse Vening-Meinesz method and the Stokes numerical inverse method. The comparison between the inversion results and the gravity values provided by NGDC shows that, The calculation error of inverse Vening-Meinesz method is smaller than that of Stokes numerical inverse method. By adding random noise numerical experiments, it is further proved that inverse Vening-Meinesz method is more robust to the error of height data, and the calculation results of gravity anomaly in the study area are more reliable.
【作者单位】：中国海洋大学海洋地球科学学院;中国海洋大学计算机基础部;
【基金】：海洋公益性行业科研专项(201305029-02)资助~~
【分类号】：P228.3;P714

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