HELMERT TRANSFORMATION OF REFERENCE FRAME
Wei Na 1,2) ; Shi Chuang 2) ;Geng Changjiang 1,2) ; and Liu Jingnan 1,2)
1)School of Geodesy and Geomatics, Wuhan University, Wuhan 4300792)GNSS Research Center, Wuhan University, Wuhan 430079
Abstract Helmert transformation plays an important part in the establishment and maintenance of Terrestrial Reference Frame. The formulae to realize datum definition using Helmert transformation parameters are rigorously derives. Three kinds of transformation formulae are proved to be equivalent in theory.Taking ITRF2005 for example,the effects of Helmert transformation parameters precision on reference transformation of noncore stations are analyzed, and results show that maximum residual can be up to several centimeters.
Key words ：
Helmert transformation
transformation parameter
orientation time evolution
velocity filed
terrestrial reference frame
Received: 01 January 1900
Corresponding Authors:
Wei Na
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