中文摘要：

介绍了一种基于全球1°×1°（10^-5ms^-2级）重力场模型、较高精度地表浅层物质密度分布模型以及平均海面模型,并利用虚拟压缩恢复法确定全球1°×1°厘米级大地水准面的理论方法,阐述了该方法的实施步骤。模拟实验检验结果表明,对于所用地球模型,采用该方法确定1°×1°全球大地水准面可达到厘米级或更优精度。

英文摘要：

On the basis of a given 1°× 1° global geopotential field model with 10^-5ms^-2 level, a density model of the shallow layer with relatively high accuracy and also an accurate mean sea surface model, a theoretical approach for determining 1°× 1°global geoid with centimeter-level, by use of fictitious compress recovery method, is introduced. The simulative experiments are carried out to test this approach and the results show that, for determi- ning the global geoid at a scale of 1°× 1° of the earth model used here, the accuracy can reach centimeter-level or even better.