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《Science of Surveying and Mapping》 2006-01
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A new geometric mapping function for the dry part of tropospheric hydrostatic delay

YIN Haitao, XIONG Yongliang,HUANG Dingfa(Dept. of Surveying Engineering, Southwest Jiaotong University, Chendu, 610031, China)  
In this paper, we have developed a new geometric mapping function for the hydrostatic delay of dry tropospheric. The only free parameter in the mapping function is the climatological pressure scale height. The new mapping function is suitable for dynamic positioning and navigation. We compare the new mapping function with others currently in use (we compare with the CFA2.2 and the Niell mapping function, most frequently encountered in literature) in different elevation angles and latitudes. From the result, we can see that the new geometric mapping function displays comparable performance with the other mapping functions at elevation bigger than 6°.
【Fund】: 国家自然科学基金资助项目(40271091);; 教育部优秀教师资助计划(2003109)
【CateGory Index】: P228.4
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