无重力数据情况下阜新似大地水准面的确定  

Determination of Fuxin quasi-geoid without gravity data

作　　者：李吉之[1] 孙艳崇[1] 

机构地区：[1]辽宁工程技术大学测量系,辽宁阜新123000

出　　处：《测绘工程》2006年第4期31-32,36,共3页Engineering of Surveying and Mapping

摘　　要：将地球位模型计算的阜新似大地水准面拟合于GPS水准实测的似大地水准面。其方法是对每一个GPS水准点,以选定的地球位模型计算其高程异常值,并与其GPS水准实测高程异常值进行比较,得到高程异常的改正值,以此改正附近2.5′×2.5′格网点上用地球位模型计算的高程异常。The quasi-geoid computed by geopotential model is fitted with the quasi-geoid measured by GPS leveling. The methods are as follows： for each GPS leveling point, the height anomaly is computed using a geopotential model and compared with the measured value by GPS leveling, the correction to the computed value is obtained. The correction is used to correct the height anomaly of near by 2.5’× 2.5＇grids, which is calculated by the geopotential model.

关 键 词：似大地水准面 GPS水准 高程异常 地球位模型 

分 类 号：P223[天文地球—大地测量学与测量工程]