海洋测绘2018，Vol.38Issue(1)：5-9,5.DOI:10.3969/j.issn.1671-3044.2018.01.002
利用DEM数据计算地形质量重力梯度的新方法
A New Method to Calculate Gravity Gradient of Terrain Mass Using DEM
摘要
Abstract
Gravity gradient information made up of low frequency,intermediate frequency and high frequency information,and the high frequency information is mainly affected by topography mass.In order to better use terrain data to get the high frequency information of gravity gradient,we put forward a new method-Gauss-Legendre integral method.According to the model calculation and the DEM data,we prove the correctness and effectiveness of the method.Results show that the accuracy of calculating efficiency of the new method,compared with the traditional prism method and the direct integral method,is higher under certain conditions.And under the backward condition of lack of gravity data,using DEM data to calculate the high frequency part of gravity gradient is feasible.Compared with the traditional calculating method,the method has a certain advantage.关键词
重力梯度/高斯-勒让德积分法/地形质量/棱柱法/直接积分法Key words
gravity gradients/Gauss-Legendre integral method/terrain mass/the prism/the direct integral method分类
天文与地球科学引用本文复制引用
蒲薪吉,赵东明,马越原,曹丹..利用DEM数据计算地形质量重力梯度的新方法[J].海洋测绘,2018,38(1):5-9,5.基金项目
国家自然科学基金(41574020). （41574020）
