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《Science of Surveying and Mapping》 2006-06
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Title definition of quasi-geoid and some questions encountered in airborne gravimetry

WU Xiao-ping(Institute of Surveying and Mapping,PLA information engineering university,Zhengzhou 450052,China)  
In this paper the definitions of height anomaly and quasi-geoid as well as the variation of height anomaly with respect to spatial location are discussed.Aiming at the emerging airborne gravity measurement,the author demonstrates the improperness of setting the quasi-geoid as the datum of normal height system,and presents the method of the normal height determination of a point at some altitude from the geometric height difference between ground observation and the point at some altitude.
【CateGory Index】: P223
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【Citations】
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