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《Science of Surveying and Mapping》 2015-06
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Study on the height conversion in barometric altimeter assisted positioning

LIU Cheng;SHI Hu-li;National Astronomical Observatories,Chinese Academy of Sciences;School of Graduate,Chinese Academy of Sciences;  
Aiming at the contradiction that the height measured by barometric altimeter is the altitude height,but the one which required in positioning solution is the geodetic height,using the pressure base stations as the level coincident points was proposed in this paper,and the height anomaly value was transmitted to the user for height conversion;also establishing local coordinate system in region area and obtaining Zvalue directly were proposed,thus the positioning solution could be figured out by reducing the dimensions.The two methods were suitable for different situations,and solved the contradiction between application range and measurement accuracy of barometric altimeter.Experimental results showed that the methods could eliminate height difference and improve positioning accuracy effectively.
【CateGory Index】: P228.4
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