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Junyong Chen(National Bureau of Surveying and Mapping,Beijng 100830,China)  
In a height anomaly control network,such as astronomic(or astro-gravimetric)levellingnetwork or GPS-levelling network,height anomalies at interpolation points are predictedusually using remove-restore technique on the basis of known height anomalies at the controlpoints and the gravity data.This paper discusses the relationship among accuracy of the pre-dicted height anomalies and the resolution as well as accuracy of height anomaly control net-work and those of gravity data.Main results of a case study and its test computation in con- nection with practical circumstance of China are also given.
【CateGory Index】: P223
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