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《Engineering of Surveying and Mapping》 2006-04
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Optimizing model for GPS height fitting

LIU Shuai~1,WANG Li-jiang~2,ZHU Jian-jun~1,ZHAO Ling-li~1(1.School of Info-Physics and Geomatics Engineering,Central South University,Changsha 410083,China;2.Feshan City Design and Survey Institute,Feshan 528000,China)  
The conicoid model(CFM) is the best model for transforming GPS height in the engineering practice,but there is no proof in theory.Therefore,the paper introduces the Akaike Information Criterion(AIC) proposed by Akaike(1973) to choose the better model for transforming GPS height,we separate the value of AIC into two parts,AIC-(i) and AIC-(e),then add up them to obtain the total value,AIC-(total),which could testify which model is the best comparing with the relative information,and some practicable conclusions are received.
【Fund】: 湖南省自然科学基金项目(02JJY2065)
【CateGory Index】: P224
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