基于卫星重力梯度数据的线质量调和分析  

LINE-MASS HARMONIC ANALYSIS METHOD BASED ON SATELLITE GRAVITY GRADIENT DATA

作　　者：吴星[1,2] 张传定[3] 王凯[3] 冯炜[4] 

机构地区：[1]总装备部工程设计研究总院,北京100028 [2]海军海洋测绘研究所,天津300061 [3]解放军信息工程大学测绘学院,郑州450052 [4]北京环球信息应用开发中心,北京100094

出　　处：《大地测量与地球动力学》2010年第6期95-99,共5页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金(40774031);解放军信息工程大学博士生创新基金(200707)

摘　　要：针对卫星重力梯度数据,推导了全球线质量模型的基本方程以及线质量调和分析的基本公式;研究了基于卫星重力梯度径向实数分量、水平复数分量和全张量3类情况下的线质量模型的方程及其最小二乘解,完整地给出了线质量调和分析公式。线质量调和分析法具有点质量调和分析法的消除离散误差、可联合处理多类型数据等诸多优点,又因顾及了不同埋藏深度、有分频段的作用而优于点质量法。用模拟数值验证了线质量调和分析方法的可行性和有效性。Targeting at the new type data called gravity gradient,the basic formulae and equations of the global line mass model and harmonic analysis are derived.The line mass models based on radius real component,horizontal complex component and full tensor are studied,so are the least squares solutions.The harmonic analysis formulae of line mass models are shown completely,which have various advantages such as eliminating the disperse errors and dealing with multi-types data compared with point mass harmonic analysis.The line mass method is better than the point mass method as the former is with consideration of different depths and with various frequencies.Finally,the availability and validity are proved through simulation experiments.

关 键 词：卫星重力梯度 线质量模型 点质量模型 调和分析 地球重力场 

分 类 号：P223[天文地球—大地测量学与测量工程]