摘要
卫星重力梯度测量任务将获取全球范围内高精度重力场信息。为利用重力梯度测量数据来提高重力场模型的精度 ,本文从球谐函数谱分析理论出发 ,导出了重力梯度场球谐谱分析的迭代算法公式。数值模拟结果表明 :该迭代算法的收敛性极好 ,且高阶次位系数的收敛趋势较低阶次的收敛趋势要好得多。
High precise information of gravitational field over the whole Earth will be obtained by satellite gravity gradiometry. In order to improve the pricision of gravitational field by using gravity gradient data, We have deduced the iterative formula of gravity gradient spectral analysis based on harmonic spectral analysis theory. The simulated numeric results show: the convergence of the iterative algorithm is excellent; the convergent trend of the higher degree and order's is better than that of the lower degree and order's.
关键词
重力梯度场
谱分析
球谐函数
迭代算法
gravity gradient field, spectral analysis, harmonic function, iterative algorithm
