中文摘要：

联合多种测高数据和重力异常数据,设计了观测点距离和测高精度融合的定权方法,采用最小二乘方法和Vening-Meinesz公式,分别构建了西太平洋海域（0°N—40°N,105°E—145°E）1′×1′网格化垂线偏差数字模型。选取两个不同特征区域,将垂线偏差的两个数字模型和EGM2008模型三者进行相互比较分析。结果表明：卯酉分量η的均方根差大于子午分量ξ的均方根差,海底地形复杂的南海特征区域的垂线偏差均方根差大于西太平洋中部的均方根差,构建的两个垂线偏差模型总体均方根差优于1.6″。

英文摘要：

Weighted-calcaulation method is designed by combining distance between observing points with height-measurement accuracy.With weighted least squares and the Vening-Meinesz formula,two1′×1′digital vertical deflection grid models on a certain West Pacific Ocean region（0°N—40°N,105°E—145°E）are respectively constructed by use of multiple altimetry data and gravity anomaly,and the two models are compared to EGM2008 on two chosen typical regions.The results show that,the prime vertical componentηis slightly larger than the meridian componentξ,and the root mean square error of derived vertical deflection on Southern China Sea where there is the complex seafloor topography is larger than the middle of West Pacific ocean.In addition,the root mean square error of two constructed models are generally less than 1.6″.