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《Engineering of Surveying and Mapping》 2010-04
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Calculation of normal GPS height based on height fitting residual of gravity field model

LI Zu-feng,JU Tian-li,ZHANG Cheng-zeng,MIAO Zhi-xuan(Engineering Investigation Research Institute of Northwest Hydro Consulting Engineers,Lanzhou 730050,China)  
In order to further improve the aberrant fitting accuracy of GPS height,meanwhile to reduce the number of known points and to increase the measurement efficiency of river basin planning height,a regional linear quasi-geoid fitting model with higher accuracy was established using height fitting residual of gravity field model.Under the circumstance of joint measurement with less high-level by this method,the regional height fitting accuracy met the height accuracy requirements of controlling measurement in river basin.
【CateGory Index】: P228.4
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