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《Geospatial Information》 2014-01
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Application of BP Neural Network in the Quasi-geoid Refi nement

CHEN Lin;  
The EGM2008 model with five point resolutions and the method of neural networks used for transforming GPS height were introduced briel y in this paper. The processes took full advantages of the two methods and were divided into three steps. Firstly, the height abnormal values on the known points were removed by EGM2008.Secondly, the remained values were calculated by the method of neural networks. Finally, the height values were resumed. A few practicable conclusions were received from the research. Analysis of the examples of the variety of programs to determine the Height anomaly, we obtained some useful conclusions and cognition.
【Fund】: 国家自然科学基金资助项目(41071294);; 广西自然科学基金资助项目(桂科自0640178)
【CateGory Index】: P228.49;P224.1;TP183
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