中文摘要：

采用径向改正方法将航线高度处的重力观测值归算到平均飞行高度面,采用交叉点两步平差法来进行测线系统误差补偿,并选用加权平均法和Shepard曲面拟合法对重力观测值作格网化处理。对美国大地测量局（NGS）发布的EN01进行数据处理,给出大地高6 200m处2°×3°范围内5′×5′规则格网重力扰动数据。相对于该区域的EGM2008格网重力扰动参考值,加权平均法和Shepard曲面拟合法精度分别为±1.59mGal和±1.36mGal。

英文摘要：

This article examines data reduction methods for airborne gravimetry,including reducing raw gravity observations along survey lines to average height level,compensating system errors by two-step crossover adjustment and gridding gravity data using weighted average（WA）,and Shepard surface fitting（SSF）methods.Data block EN01,released by NGS（National Geodetic Survey）,is processed according to the scheme,outputting 5′×5′grid gravity disturbances covering a region of 2°×3°,with geodetic height 6 200m.Compared to reference values computed by EGM2008 at the same locations,the accuracies of the output data from WA and SSF are±1.59mGal and ±1.36mGal.