中文摘要：

研究了利用GRACE星间距离变率数据反演地球表层质量变化的Mascon方法.推导分析了Mascon方法的数学模型,总结了该方法的解算处理步骤.推导过程表明：Mascon方法在解算处理时分离了不同区域质量变化对地球重力场的影响,且仅用卫星飞临研究区域上空的星间距离变率观测数据,可以提高解算结果的时间和空间分辨率,并且通过增加时间-空间约束方程,使得解算结果更加符合实际.

英文摘要：

The Mascon inversion method of Earth surface mass anomaly using GRACE rang rate data is studied in detail.Mathematical model of Mascon method is deduced and its calculating processing steps is summarized. The deduce procedure shows that because of the separated influence of different region mass anomaly on gravity field and using intersatellite range rate observation only when satellites flying over study area,the spatial and temporal resolutions can be improved.By adding the spatial and temporal constraint equation,the process result is more consistent with actual.