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《Engineering of Surveying and Mapping》 2001-02
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Datum and Quality Control for Synthetic Adjustment of Absolute and Relative Gravity Networks

YANG Yuab-xi,GUO Chun-xi, LIU Nian, QIU Qi-xian (Xi'an Research Institute of surveying and Mapping, Xi'an 710054, China)  
It is an effective way to improve the total quallty and determine the datum of a gravity net- work by a synthetic adjustment of absolute and relative gravity networks. Beginning with discussing of the systematic errors of gravity observations, we introduce some functinal adjustment models. Then the datum and their statistical backgrounds as well as the reliabilities corresponding to the adjustment meth- ods are analyzed based on the contribution of the two kinds of gravity observations. At last, some quality control methods are discussed for the adjustment of gravity networks.
【CateGory Index】: P223.1;P207
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