摘要
卫星重力梯度测量在恢复地球重力场的研究中已经得到了广泛应用。本文通过空间扰动位协方差函数特性,得出卫星重力梯度数据与引力位系数的相关协方差函数。利用最小二乘配置法,最终推导出由重力梯度数据直接解算引力位系数的函数表达式,并简要分析其实用性。
Satellite Gravity Gradiometry is widely used in computing Earth＇s gravity field. In this paper the covariance function about satellite gravity gradiometry data and gravitational potential coefficient is educed by space disturbances potential covariance. Least Squares Collocation is used to educe the function that can directly compute gravitational potential coefficient by satellite gravity gradiometry data. The practicabilities of the function are analysed briefly.
出处
《测绘与空间地理信息》
2005年第6期34-35,38,共3页
Geomatics & Spatial Information Technology
关键词
卫星重力梯度
位系数
协方差
最小二乘配置
satellite gravity gradient
potential coefficient
covariance
least squares collocation
