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《Surveying and Mapping of Geology and Mineral Resources》 2011-01
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Accuracy Analysis of Mixed Elevation Network Adjustment

FU Yan1,DING Guo-hua2(1.Guangdong Institute of Surveying and Mapping of Geology,Guangzhou Guangdong 510800,China;2.Yunnan Institute of Surveying and Mapping of Geology and Mineral Resources,Kunming Yunnan 650218,China)  
In this paper,based on the error theory,the mean square error of elevation difference median in bilateral observation of subtend trigonometric distance measure is presumed.The elevation difference of subtend sides in trigonometric elevation and the elevation difference of subtend sections in fourth grade leveling compose the nodes network.According to comparative analysis of the calculated results of measured data,the analysis method of trigonometric elevation accuracy and the accuracy of weighting adjustment are verified.The results show that the long-distance trigonometric elevation survey should not be used in mixed elevation network.
【CateGory Index】: P224.2
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