仇立成,赵青,徐勇,曲亚男

• 1:山东农业工程学院
• 2:山东省煤田地质局

摘要(Abstract)：

针对卫星测高技术反演海洋重力场需要解算格网垂线偏差,不同的格网化方法影响垂线偏差的解算精度与空间分辨率的问题,结合Shepard格网化方法与沿轨最小二乘方法的优势提出了一种新的格网化方法,即基于Shepard权函数的沿轨最小二乘方法。采用CryoSat-2卫星约7年的数据,选取中国黄海和南海及其周边海域作为研究区域,分别利用基于交叉点的Shepard法、距离加权沿轨最小二乘法和基于Shepard权函数的沿轨最小二乘法解算1′×1′格网的垂线偏差。将不同方法得到的结果与EGM2008模型的垂线偏差进行比较,利用本文提出的方法解算的1′×1′格网垂线偏差精度最高。研究表明,在基于Shepard权函数的沿轨最小二乘方法在垂线偏差格网化中是可靠的,且该方法可获得高精度结果。

关键词(KeyWords)： 卫星测高;垂线偏差;格网化方法;海洋重力

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 仇立成,赵青,徐勇,曲亚男

DOI: 10.16251/j.cnki.1009-2307.2021.07.006

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