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《SURVEYING AND MAPPING OF GEOLOGY AND MINERAL RESOURCES》 2000-02
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Probe into Heightening Fitting Precision of GPS Levelling Height

SHEN Xue-biao 1, XUN Yong-sheng 2, SUN Wen-bing 3 (1 Nanjing Institute of Geology, Nanjing, Jiangsu 210008, China;2 Jiangsu Institute of Surveying and Mapping of Geology, Nanjing, Jiangsu 210008,China; 3 Nanjing Designing Institute of Smelti  
In line with a test achievement of GPS levelling height fitting, fitting accuracy of GPS levelling height is analyzed from the three aspects of the precision of fitted quasi-geoid, height of fixed points and ellipsoidal height of GPS points. And lastly, some methods to heighten fitting precision of GPS levelling height are summed up.
【CateGory Index】: P228.4
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