利用重力异常信息获取梯度全张量  

Calculation and analysis of gradient tensors based on gravity anomaly information

作　　者：杨凡[1] 李姗姗[1] 

机构地区：[1]信息工程大学测绘学院,郑州450052

出　　处：《测绘科学》2011年第1期65-66,共2页Science of Surveying and Mapping

摘　　要：重力位二阶梯度张量反应了重力异常的空间变化率,特别适合于探测或研究局部的小地质体及其细节。本文在地球外部重力场基本理论的基础上,围绕如何利用重力异常信息计算获取重力梯度张量的理论与方法展开了研究。通过实验对比,验证了重力梯度较之于重力异常更能反应细致的局部特征。Gravity gradient tensor reflects the space change ratio of gravity anomaly, and it especially suits to detect and research the part detail. This article studied on the theory that how to calculate the gravity gradient tensor by gravity anomaly information, based on the theory of the earth＇ s outside gravity. At last the paper validated the conclusion that gravity gradient reflects the part detail better than gravity anomaly through experiments.

关 键 词：重力场模型 重力异常 扰动重力 重力梯度 

分 类 号：P223.7[天文地球—大地测量学与测量工程] TB1[天文地球—测绘科学与技术]